|
|
char = F;code = 70
char = a;code = 97
char = s;code = 115
char = t;code = 116
char = ;code = 32
char = m;code = 109
char = e;code = 101
char = t;code = 116
char = h;code = 104
char = o;code = 111
char = d;code = 100
char = s;code = 115
char = ;code = 32
char = f;code = 102
char = o;code = 111
char = r;code = 114
char = ;code = 32
char = s;code = 115
char = i;code = 105
char = m;code = 109
char = u;code = 117
char = l;code = 108
char = t;code = 116
char = a;code = 97
char = n;code = 110
char = e;code = 101
char = o;code = 111
char = u;code = 117
char = s;code = 115
char = ;code = 32
char = d;code = 100
char = e;code = 101
char = t;code = 116
char = e;code = 101
char = r;code = 114
char = m;code = 109
char = i;code = 105
char = n;code = 110
char = a;code = 97
char = t;code = 116
char = i;code = 105
char = o;code = 111
char = n;code = 110
char = ;code = 32
char = o;code = 111
char = f;code = 102
char = ;code = 32
char = a;code = 97
char = r;code = 114
char = g;code = 103
char = i;code = 105
char = n;code = 110
char = i;code = 105
char = n;code = 110
char = e;code = 101
char = ,;code = 44
char = ;code = 32
char = a;code = 97
char = s;code = 115
char = c;code = 99
char = o;code = 111
char = r;code = 114
char = b;code = 98
char = i;code = 105
char = c;code = 99
char = ;code = 32
char = a;code = 97
char = c;code = 99
char = i;code = 105
char = d;code = 100
char = ;code = 32
char = a;code = 97
char = n;code = 110
char = d;code = 100
char = ;code = 32
char = a;code = 97
char = s;code = 115
char = p;code = 112
char = a;code = 97
char = r;code = 114
char = t;code = 116
char = i;code = 105
char = c;code = 99
char = ;code = 32
char = a;code = 97
char = c;code = 99
char = i;code = 105
char = d;code = 100
char = ;code = 32
char = b;code = 98
char = y;code = 121
char = ;code = 32
char = c;code = 99
char = a;code = 97
char = p;code = 112
char = i;code = 105
char = l;code = 108
char = l;code = 108
char = a;code = 97
char = r;code = 114
char = y;code = 121
char = ;code = 32
char = e;code = 101
char = l;code = 108
char = e;code = 101
char = c;code = 99
char = t;code = 116
char = r;code = 114
char = o;code = 111
char = p;code = 112
char = h;code = 104
char = o;code = 111
char = r;code = 114
char = e;code = 101
char = s;code = 115
char = i;code = 105
char = s;code = 115
char = .;code = 46
result sql = Fast methods for simultaneous determination of arginine, ascorbic acid and aspartic acid by capillary electrophoresis.
Fast methods for simultaneous determination of arginine, ascorbic acid and aspartic acid by capillary electrophoresis.char = A;code = 65
char = r;code = 114
char = g;code = 103
char = i;code = 105
char = n;code = 110
char = i;code = 105
char = n;code = 110
char = e;code = 101
char = ;code = 32
char = (;code = 40
char = A;code = 65
char = R;code = 82
char = G;code = 71
char = );code = 41
char = ,;code = 44
char = ;code = 32
char = a;code = 97
char = s;code = 115
char = c;code = 99
char = o;code = 111
char = r;code = 114
char = b;code = 98
char = i;code = 105
char = c;code = 99
char = ;code = 32
char = a;code = 97
char = c;code = 99
char = i;code = 105
char = d;code = 100
char = ;code = 32
char = (;code = 40
char = A;code = 65
char = S;code = 83
char = C;code = 67
char = );code = 41
char = ;code = 32
char = a;code = 97
char = n;code = 110
char = d;code = 100
char = ;code = 32
char = a;code = 97
char = s;code = 115
char = p;code = 112
char = a;code = 97
char = r;code = 114
char = t;code = 116
char = i;code = 105
char = c;code = 99
char = ;code = 32
char = a;code = 97
char = c;code = 99
char = i;code = 105
char = d;code = 100
char = ;code = 32
char = (;code = 40
char = A;code = 65
char = S;code = 83
char = P;code = 80
char = );code = 41
char = ;code = 32
char = a;code = 97
char = r;code = 114
char = e;code = 101
char = ;code = 32
char = v;code = 118
char = e;code = 101
char = r;code = 114
char = y;code = 121
char = ;code = 32
char = p;code = 112
char = o;code = 111
char = p;code = 112
char = u;code = 117
char = l;code = 108
char = a;code = 97
char = r;code = 114
char = ;code = 32
char = a;code = 97
char = n;code = 110
char = d;code = 100
char = ;code = 32
char = w;code = 119
char = i;code = 105
char = d;code = 100
char = e;code = 101
char = l;code = 108
char = y;code = 121
char = ;code = 32
char = c;code = 99
char = o;code = 111
char = n;code = 110
char = s;code = 115
char = u;code = 117
char = m;code = 109
char = e;code = 101
char = d;code = 100
char = ;code = 32
char = a;code = 97
char = c;code = 99
char = t;code = 116
char = i;code = 105
char = v;code = 118
char = e;code = 101
char = ;code = 32
char = i;code = 105
char = n;code = 110
char = g;code = 103
char = r;code = 114
char = e;code = 101
char = d;code = 100
char = i;code = 105
char = e;code = 101
char = n;code = 110
char = t;code = 116
char = s;code = 115
char = ;code = 32
char = u;code = 117
char = s;code = 115
char = e;code = 101
char = d;code = 100
char = ;code = 32
char = f;code = 102
char = o;code = 111
char = r;code = 114
char = ;code = 32
char = f;code = 102
char = a;code = 97
char = t;code = 116
char = i;code = 105
char = g;code = 103
char = u;code = 117
char = e;code = 101
char = ;code = 32
char = t;code = 116
char = r;code = 114
char = e;code = 101
char = a;code = 97
char = t;code = 116
char = m;code = 109
char = e;code = 101
char = n;code = 110
char = t;code = 116
char = ;code = 32
char = o;code = 111
char = r;code = 114
char = ;code = 32
char = i;code = 105
char = m;code = 109
char = p;code = 112
char = r;code = 114
char = o;code = 111
char = v;code = 118
char = e;code = 101
char = m;code = 109
char = e;code = 101
char = n;code = 110
char = t;code = 116
char = ;code = 32
char = o;code = 111
char = f;code = 102
char = ;code = 32
char = p;code = 112
char = h;code = 104
char = y;code = 121
char = s;code = 115
char = i;code = 105
char = c;code = 99
char = a;code = 97
char = l;code = 108
char = ;code = 32
char = p;code = 112
char = e;code = 101
char = r;code = 114
char = f;code = 102
char = o;code = 111
char = r;code = 114
char = m;code = 109
char = a;code = 97
char = n;code = 110
char = c;code = 99
char = e;code = 101
char = .;code = 46
char = ;code = 32
char = F;code = 70
char = o;code = 111
char = r;code = 114
char = ;code = 32
char = t;code = 116
char = h;code = 104
char = i;code = 105
char = s;code = 115
char = ;code = 32
char = r;code = 114
char = e;code = 101
char = a;code = 97
char = s;code = 115
char = o;code = 111
char = n;code = 110
char = ,;code = 44
char = ;code = 32
char = t;code = 116
char = h;code = 104
char = e;code = 101
char = s;code = 115
char = e;code = 101
char = ;code = 32
char = c;code = 99
char = o;code = 111
char = m;code = 109
char = p;code = 112
char = o;code = 111
char = u;code = 117
char = n;code = 110
char = d;code = 100
char = s;code = 115
char = ;code = 32
char = a;code = 97
char = r;code = 114
char = e;code = 101
char = ;code = 32
char = u;code = 117
char = s;code = 115
char = u;code = 117
char = a;code = 97
char = l;code = 108
char = l;code = 108
char = y;code = 121
char = ;code = 32
char = a;code = 97
char = v;code = 118
char = a;code = 97
char = i;code = 105
char = l;code = 108
char = a;code = 97
char = b;code = 98
char = l;code = 108
char = e;code = 101
char = ;code = 32
char = i;code = 105
char = n;code = 110
char = ;code = 32
char = t;code = 116
char = h;code = 104
char = e;code = 101
char = ;code = 32
char = s;code = 115
char = a;code = 97
char = m;code = 109
char = e;code = 101
char = ;code = 32
char = p;code = 112
char = h;code = 104
char = a;code = 97
char = r;code = 114
char = m;code = 109
char = a;code = 97
char = c;code = 99
char = e;code = 101
char = u;code = 117
char = t;code = 116
char = i;code = 105
char = c;code = 99
char = a;code = 97
char = l;code = 108
char = ;code = 32
char = f;code = 102
char = o;code = 111
char = r;code = 114
char = m;code = 109
char = u;code = 117
char = l;code = 108
char = a;code = 97
char = t;code = 116
char = i;code = 105
char = o;code = 111
char = n;code = 110
char = .;code = 46
char = ;code = 32
char = I;code = 73
char = n;code = 110
char = ;code = 32
char = t;code = 116
char = h;code = 104
char = e;code = 101
char = ;code = 32
char = c;code = 99
char = u;code = 117
char = r;code = 114
char = r;code = 114
char = e;code = 101
char = n;code = 110
char = t;code = 116
char = ;code = 32
char = p;code = 112
char = a;code = 97
char = p;code = 112
char = e;code = 101
char = r;code = 114
char = ,;code = 44
char = ;code = 32
char = w;code = 119
char = e;code = 101
char = ;code = 32
char = d;code = 100
char = e;code = 101
char = s;code = 115
char = c;code = 99
char = r;code = 114
char = i;code = 105
char = b;code = 98
char = e;code = 101
char = ;code = 32
char = f;code = 102
char = o;code = 111
char = r;code = 114
char = ;code = 32
char = t;code = 116
char = h;code = 104
char = e;code = 101
char = ;code = 32
char = f;code = 102
char = i;code = 105
char = r;code = 114
char = s;code = 115
char = t;code = 116
char = -;code = 45
char = t;code = 116
char = i;code = 105
char = m;code = 109
char = e;code = 101
char = ;code = 32
char = m;code = 109
char = e;code = 101
char = t;code = 116
char = h;code = 104
char = o;code = 111
char = d;code = 100
char = s;code = 115
char = ;code = 32
char = f;code = 102
char = o;code = 111
char = r;code = 114
char = ;code = 32
char = s;code = 115
char = i;code = 105
char = m;code = 109
char = u;code = 117
char = l;code = 108
char = t;code = 116
char = a;code = 97
char = n;code = 110
char = e;code = 101
char = o;code = 111
char = u;code = 117
char = s;code = 115
char = ;code = 32
char = d;code = 100
char = e;code = 101
char = t;code = 116
char = e;code = 101
char = r;code = 114
char = m;code = 109
char = i;code = 105
char = n;code = 110
char = a;code = 97
char = t;code = 116
char = i;code = 105
char = o;code = 111
char = n;code = 110
char = ;code = 32
char = o;code = 111
char = f;code = 102
char = ;code = 32
char = A;code = 65
char = R;code = 82
char = G;code = 71
char = ,;code = 44
char = ;code = 32
char = A;code = 65
char = S;code = 83
char = C;code = 67
char = ;code = 32
char = a;code = 97
char = n;code = 110
char = d;code = 100
char = ;code = 32
char = A;code = 65
char = S;code = 83
char = P;code = 80
char = ;code = 32
char = u;code = 117
char = s;code = 115
char = i;code = 105
char = n;code = 110
char = g;code = 103
char = ;code = 32
char = c;code = 99
char = a;code = 97
char = p;code = 112
char = i;code = 105
char = l;code = 108
char = l;code = 108
char = a;code = 97
char = r;code = 114
char = y;code = 121
char = ;code = 32
char = e;code = 101
char = l;code = 108
char = e;code = 101
char = c;code = 99
char = t;code = 116
char = r;code = 114
char = o;code = 111
char = p;code = 112
char = h;code = 104
char = o;code = 111
char = r;code = 114
char = e;code = 101
char = s;code = 115
char = i;code = 105
char = s;code = 115
char = ;code = 32
char = w;code = 119
char = i;code = 105
char = t;code = 116
char = h;code = 104
char = ;code = 32
char = c;code = 99
char = a;code = 97
char = p;code = 112
char = a;code = 97
char = c;code = 99
char = i;code = 105
char = t;code = 116
char = i;code = 105
char = v;code = 118
char = e;code = 101
char = l;code = 108
char = y;code = 121
char = ;code = 32
char = c;code = 99
char = o;code = 111
char = u;code = 117
char = p;code = 112
char = l;code = 108
char = e;code = 101
char = d;code = 100
char = ;code = 32
char = c;code = 99
char = o;code = 111
char = n;code = 110
char = t;code = 116
char = a;code = 97
char = c;code = 99
char = t;code = 116
char = l;code = 108
char = e;code = 101
char = s;code = 115
char = s;code = 115
char = ;code = 32
char = c;code = 99
char = o;code = 111
char = n;code = 110
char = d;code = 100
char = u;code = 117
char = c;code = 99
char = t;code = 116
char = i;code = 105
char = v;code = 118
char = i;code = 105
char = t;code = 116
char = y;code = 121
char = ;code = 32
char = d;code = 100
char = e;code = 101
char = t;code = 116
char = e;code = 101
char = c;code = 99
char = t;code = 116
char = i;code = 105
char = o;code = 111
char = n;code = 110
char = ;code = 32
char = (;code = 40
char = C;code = 67
char = E;code = 69
char = -;code = 45
char = C;code = 67
char = <;code = 60
char = s;code = 115
char = u;code = 117
char = p;code = 112
char = >;code = 62
char = 4;code = 52
char = <;code = 60
char = /;code = 47
char = s;code = 115
char = u;code = 117
char = p;code = 112
char = >;code = 62
char = D;code = 68
char = );code = 41
char = ;code = 32
char = a;code = 97
char = n;code = 110
char = d;code = 100
char = ;code = 32
char = w;code = 119
char = i;code = 105
char = t;code = 116
char = h;code = 104
char = ;code = 32
char = U;code = 85
char = V;code = 86
char = ;code = 32
char = s;code = 115
char = p;code = 112
char = e;code = 101
char = c;code = 99
char = t;code = 116
char = r;code = 114
char = o;code = 111
char = p;code = 112
char = h;code = 104
char = o;code = 111
char = t;code = 116
char = o;code = 111
char = m;code = 109
char = e;code = 101
char = t;code = 116
char = r;code = 114
char = i;code = 105
char = c;code = 99
char = ;code = 32
char = d;code = 100
char = e;code = 101
char = t;code = 116
char = e;code = 101
char = c;code = 99
char = t;code = 116
char = i;code = 105
char = o;code = 111
char = n;code = 110
char = ;code = 32
char = (;code = 40
char = C;code = 67
char = E;code = 69
char = -;code = 45
char = U;code = 85
char = V;code = 86
char = );code = 41
char = .;code = 46
char = ;code = 32
char = T;code = 84
char = h;code = 104
char = e;code = 101
char = ;code = 32
char = p;code = 112
char = r;code = 114
char = o;code = 111
char = p;code = 112
char = o;code = 111
char = s;code = 115
char = e;code = 101
char = d;code = 100
char = ;code = 32
char = m;code = 109
char = e;code = 101
char = t;code = 116
char = h;code = 104
char = o;code = 111
char = d;code = 100
char = s;code = 115
char = ;code = 32
char = a;code = 97
char = r;code = 114
char = e;code = 101
char = ;code = 32
char = s;code = 115
char = i;code = 105
char = m;code = 109
char = p;code = 112
char = l;code = 108
char = e;code = 101
char = ,;code = 44
char = ;code = 32
char = r;code = 114
char = a;code = 97
char = p;code = 112
char = i;code = 105
char = d;code = 100
char = ;code = 32
char = (;code = 40
char = 7;code = 55
char = 8;code = 56
char = ;code = 32
char = a;code = 97
char = n;code = 110
char = d;code = 100
char = ;code = 32
char = 2;code = 50
char = 3;code = 51
char = ;code = 32
char = i;code = 105
char = n;code = 110
char = j;code = 106
char = e;code = 101
char = c;code = 99
char = t;code = 116
char = i;code = 105
char = o;code = 111
char = n;code = 110
char = s;code = 115
char = ;code = 32
char = h;code = 104
char = <;code = 60
char = s;code = 115
char = u;code = 117
char = p;code = 112
char = >;code = 62
char = -;code = 45
char = 1;code = 49
char = <;code = 60
char = /;code = 47
char = s;code = 115
char = u;code = 117
char = p;code = 112
char = >;code = 62
char = ,;code = 44
char = ;code = 32
char = r;code = 114
char = e;code = 101
char = s;code = 115
char = p;code = 112
char = e;code = 101
char = c;code = 99
char = t;code = 116
char = i;code = 105
char = v;code = 118
char = e;code = 101
char = l;code = 108
char = y;code = 121
char = );code = 41
char = ;code = 32
char = a;code = 97
char = n;code = 110
char = d;code = 100
char = ;code = 32
char = h;code = 104
char = a;code = 97
char = v;code = 118
char = e;code = 101
char = ;code = 32
char = l;code = 108
char = o;code = 111
char = w;code = 119
char = ;code = 32
char = e;code = 101
char = n;code = 110
char = v;code = 118
char = i;code = 105
char = r;code = 114
char = o;code = 111
char = n;code = 110
char = m;code = 109
char = e;code = 101
char = n;code = 110
char = t;code = 116
char = a;code = 97
char = l;code = 108
char = ;code = 32
char = i;code = 105
char = m;code = 109
char = p;code = 112
char = a;code = 97
char = c;code = 99
char = t;code = 116
char = ;code = 32
char = (;code = 40
char = m;code = 109
char = i;code = 105
char = n;code = 110
char = i;code = 105
char = m;code = 109
char = a;code = 97
char = l;code = 108
char = ;code = 32
char = w;code = 119
char = a;code = 97
char = s;code = 115
char = t;code = 116
char = e;code = 101
char = ;code = 32
char = g;code = 103
char = e;code = 101
char = n;code = 110
char = e;code = 101
char = r;code = 114
char = a;code = 97
char = t;code = 116
char = i;code = 105
char = o;code = 111
char = n;code = 110
char = );code = 41
char = .;code = 46
char = ;code = 32
char = T;code = 84
char = h;code = 104
char = e;code = 101
char = ;code = 32
char = s;code = 115
char = e;code = 101
char = p;code = 112
char = a;code = 97
char = r;code = 114
char = a;code = 97
char = t;code = 116
char = i;code = 105
char = o;code = 111
char = n;code = 110
char = ;code = 32
char = b;code = 98
char = y;code = 121
char = ;code = 32
char = C;code = 67
char = E;code = 69
char = -;code = 45
char = C;code = 67
char = <;code = 60
char = s;code = 115
char = u;code = 117
char = p;code = 112
char = >;code = 62
char = 4;code = 52
char = <;code = 60
char = /;code = 47
char = s;code = 115
char = u;code = 117
char = p;code = 112
char = >;code = 62
char = D;code = 68
char = ;code = 32
char = w;code = 119
char = a;code = 97
char = s;code = 115
char = ;code = 32
char = a;code = 97
char = c;code = 99
char = h;code = 104
char = i;code = 105
char = e;code = 101
char = v;code = 118
char = e;code = 101
char = d;code = 100
char = ;code = 32
char = w;code = 119
char = i;code = 105
char = t;code = 116
char = h;code = 104
char = ;code = 32
char = a;code = 97
char = ;code = 32
char = b;code = 98
char = a;code = 97
char = c;code = 99
char = k;code = 107
char = g;code = 103
char = r;code = 114
char = o;code = 111
char = u;code = 117
char = n;code = 110
char = d;code = 100
char = ;code = 32
char = e;code = 101
char = l;code = 108
char = e;code = 101
char = c;code = 99
char = t;code = 116
char = r;code = 114
char = o;code = 111
char = l;code = 108
char = y;code = 121
char = t;code = 116
char = e;code = 101
char = ;code = 32
char = (;code = 40
char = B;code = 66
char = G;code = 71
char = E;code = 69
char = );code = 41
char = ;code = 32
char = c;code = 99
char = o;code = 111
char = m;code = 109
char = p;code = 112
char = o;code = 111
char = s;code = 115
char = e;code = 101
char = d;code = 100
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result sql = Arginine (ARG), ascorbic acid (ASC) and aspartic acid (ASP) are very popular and widely consumed active ingredients used for fatigue treatment or improvement of physical performance. For this reason, these compounds are usually available in the same pharmaceutical formulation. In the current paper, we describe for the first-time methods for simultaneous determination of ARG, ASC and ASP using capillary electrophoresis with capacitively coupled contactless conductivity detection (CE-C4D) and with UV spectrophotometric detection (CE-UV). The proposed methods are simple, rapid (78 and 23 injections h-1, respectively) and have low environmental impact (minimal waste generation). The separation by CE-C4D was achieved with a background electrolyte (BGE) composed by 20 mmol L-1 N-tris(hydroxymethyl)- methyl]-3-aminopropanesulfonic acid (TAPS) and 10 mmol L-1 of NaOH (pH 8.7). The limits of detection (LOD) were 0.01, 0.02 and 0.04 mmol L-1 for ARG, ASC and ASP, respectively. The proposed CE-UV method was optimized with a BGE composed by 10 mmol L-1 sodium tetraborate (pH 9.4). The limits of detection (LOD) were 0.03, 0.02 and 0.04 mmol L-1 for ARG, ASC and ASP, respectively. No statistically significant differences were observed (95% confidence level) between the results obtained by the developed CE methods and reference procedures (HPLC for ARG, iodometry for ASC and, acid-base titration for ASP).
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char = o;code = 111
char = r;code = 114
char = e;code = 101
char = s;code = 115
char = i;code = 105
char = s;code = 115
char = .;code = 46
result sql = Fast methods for simultaneous determination of arginine, ascorbic acid and aspartic acid by capillary electrophoresis.
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char = P;code = 80
char = );code = 41
char = ;code = 32
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char = e;code = 101
char = ;code = 32
char = v;code = 118
char = e;code = 101
char = r;code = 114
char = y;code = 121
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char = o;code = 111
char = p;code = 112
char = u;code = 117
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char = a;code = 97
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char = a;code = 97
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char = d;code = 100
char = ;code = 32
char = w;code = 119
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char = d;code = 100
char = e;code = 101
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char = c;code = 99
char = o;code = 111
char = n;code = 110
char = s;code = 115
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char = m;code = 109
char = e;code = 101
char = d;code = 100
char = ;code = 32
char = a;code = 97
char = c;code = 99
char = t;code = 116
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char = v;code = 118
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char = ;code = 32
char = i;code = 105
char = n;code = 110
char = g;code = 103
char = r;code = 114
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char = d;code = 100
char = i;code = 105
char = e;code = 101
char = n;code = 110
char = t;code = 116
char = s;code = 115
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char = u;code = 117
char = s;code = 115
char = e;code = 101
char = d;code = 100
char = ;code = 32
char = f;code = 102
char = o;code = 111
char = r;code = 114
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char = f;code = 102
char = a;code = 97
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char = i;code = 105
char = g;code = 103
char = u;code = 117
char = e;code = 101
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char = t;code = 116
char = r;code = 114
char = e;code = 101
char = a;code = 97
char = t;code = 116
char = m;code = 109
char = e;code = 101
char = n;code = 110
char = t;code = 116
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char = o;code = 111
char = r;code = 114
char = ;code = 32
char = i;code = 105
char = m;code = 109
char = p;code = 112
char = r;code = 114
char = o;code = 111
char = v;code = 118
char = e;code = 101
char = m;code = 109
char = e;code = 101
char = n;code = 110
char = t;code = 116
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char = o;code = 111
char = f;code = 102
char = ;code = 32
char = p;code = 112
char = h;code = 104
char = y;code = 121
char = s;code = 115
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char = c;code = 99
char = a;code = 97
char = l;code = 108
char = ;code = 32
char = p;code = 112
char = e;code = 101
char = r;code = 114
char = f;code = 102
char = o;code = 111
char = r;code = 114
char = m;code = 109
char = a;code = 97
char = n;code = 110
char = c;code = 99
char = e;code = 101
char = .;code = 46
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char = F;code = 70
char = o;code = 111
char = r;code = 114
char = ;code = 32
char = t;code = 116
char = h;code = 104
char = i;code = 105
char = s;code = 115
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char = r;code = 114
char = e;code = 101
char = a;code = 97
char = s;code = 115
char = o;code = 111
char = n;code = 110
char = ,;code = 44
char = ;code = 32
char = t;code = 116
char = h;code = 104
char = e;code = 101
char = s;code = 115
char = e;code = 101
char = ;code = 32
char = c;code = 99
char = o;code = 111
char = m;code = 109
char = p;code = 112
char = o;code = 111
char = u;code = 117
char = n;code = 110
char = d;code = 100
char = s;code = 115
char = ;code = 32
char = a;code = 97
char = r;code = 114
char = e;code = 101
char = ;code = 32
char = u;code = 117
char = s;code = 115
char = u;code = 117
char = a;code = 97
char = l;code = 108
char = l;code = 108
char = y;code = 121
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char = a;code = 97
char = v;code = 118
char = a;code = 97
char = i;code = 105
char = l;code = 108
char = a;code = 97
char = b;code = 98
char = l;code = 108
char = e;code = 101
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char = i;code = 105
char = n;code = 110
char = ;code = 32
char = t;code = 116
char = h;code = 104
char = e;code = 101
char = ;code = 32
char = s;code = 115
char = a;code = 97
char = m;code = 109
char = e;code = 101
char = ;code = 32
char = p;code = 112
char = h;code = 104
char = a;code = 97
char = r;code = 114
char = m;code = 109
char = a;code = 97
char = c;code = 99
char = e;code = 101
char = u;code = 117
char = t;code = 116
char = i;code = 105
char = c;code = 99
char = a;code = 97
char = l;code = 108
char = ;code = 32
char = f;code = 102
char = o;code = 111
char = r;code = 114
char = m;code = 109
char = u;code = 117
char = l;code = 108
char = a;code = 97
char = t;code = 116
char = i;code = 105
char = o;code = 111
char = n;code = 110
char = .;code = 46
char = ;code = 32
char = I;code = 73
char = n;code = 110
char = ;code = 32
char = t;code = 116
char = h;code = 104
char = e;code = 101
char = ;code = 32
char = c;code = 99
char = u;code = 117
char = r;code = 114
char = r;code = 114
char = e;code = 101
char = n;code = 110
char = t;code = 116
char = ;code = 32
char = p;code = 112
char = a;code = 97
char = p;code = 112
char = e;code = 101
char = r;code = 114
char = ,;code = 44
char = ;code = 32
char = w;code = 119
char = e;code = 101
char = ;code = 32
char = d;code = 100
char = e;code = 101
char = s;code = 115
char = c;code = 99
char = r;code = 114
char = i;code = 105
char = b;code = 98
char = e;code = 101
char = ;code = 32
char = f;code = 102
char = o;code = 111
char = r;code = 114
char = ;code = 32
char = t;code = 116
char = h;code = 104
char = e;code = 101
char = ;code = 32
char = f;code = 102
char = i;code = 105
char = r;code = 114
char = s;code = 115
char = t;code = 116
char = -;code = 45
char = t;code = 116
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char = m;code = 109
char = e;code = 101
char = ;code = 32
char = m;code = 109
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char = h;code = 104
char = o;code = 111
char = d;code = 100
char = s;code = 115
char = ;code = 32
char = f;code = 102
char = o;code = 111
char = r;code = 114
char = ;code = 32
char = s;code = 115
char = i;code = 105
char = m;code = 109
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char = l;code = 108
char = t;code = 116
char = a;code = 97
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char = e;code = 101
char = o;code = 111
char = u;code = 117
char = s;code = 115
char = ;code = 32
char = d;code = 100
char = e;code = 101
char = t;code = 116
char = e;code = 101
char = r;code = 114
char = m;code = 109
char = i;code = 105
char = n;code = 110
char = a;code = 97
char = t;code = 116
char = i;code = 105
char = o;code = 111
char = n;code = 110
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char = o;code = 111
char = f;code = 102
char = ;code = 32
char = A;code = 65
char = R;code = 82
char = G;code = 71
char = ,;code = 44
char = ;code = 32
char = A;code = 65
char = S;code = 83
char = C;code = 67
char = ;code = 32
char = a;code = 97
char = n;code = 110
char = d;code = 100
char = ;code = 32
char = A;code = 65
char = S;code = 83
char = P;code = 80
char = ;code = 32
char = u;code = 117
char = s;code = 115
char = i;code = 105
char = n;code = 110
char = g;code = 103
char = ;code = 32
char = c;code = 99
char = a;code = 97
char = p;code = 112
char = i;code = 105
char = l;code = 108
char = l;code = 108
char = a;code = 97
char = r;code = 114
char = y;code = 121
char = ;code = 32
char = e;code = 101
char = l;code = 108
char = e;code = 101
char = c;code = 99
char = t;code = 116
char = r;code = 114
char = o;code = 111
char = p;code = 112
char = h;code = 104
char = o;code = 111
char = r;code = 114
char = e;code = 101
char = s;code = 115
char = i;code = 105
char = s;code = 115
char = ;code = 32
char = w;code = 119
char = i;code = 105
char = t;code = 116
char = h;code = 104
char = ;code = 32
char = c;code = 99
char = a;code = 97
char = p;code = 112
char = a;code = 97
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char = i;code = 105
char = t;code = 116
char = i;code = 105
char = v;code = 118
char = e;code = 101
char = l;code = 108
char = y;code = 121
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char = c;code = 99
char = o;code = 111
char = u;code = 117
char = p;code = 112
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char = e;code = 101
char = d;code = 100
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char = c;code = 99
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char = t;code = 116
char = a;code = 97
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char = t;code = 116
char = l;code = 108
char = e;code = 101
char = s;code = 115
char = s;code = 115
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char = c;code = 99
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char = d;code = 100
char = u;code = 117
char = c;code = 99
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char = i;code = 105
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char = i;code = 105
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char = e;code = 101
char = c;code = 99
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char = i;code = 105
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char = (;code = 40
char = C;code = 67
char = E;code = 69
char = -;code = 45
char = C;code = 67
char = <;code = 60
char = s;code = 115
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char = p;code = 112
char = >;code = 62
char = 4;code = 52
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char = );code = 41
char = ;code = 32
char = a;code = 97
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char = d;code = 100
char = ;code = 32
char = w;code = 119
char = i;code = 105
char = t;code = 116
char = h;code = 104
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char = U;code = 85
char = V;code = 86
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char = s;code = 115
char = p;code = 112
char = e;code = 101
char = c;code = 99
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char = r;code = 114
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char = o;code = 111
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char = o;code = 111
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char = e;code = 101
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char = e;code = 101
char = c;code = 99
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char = i;code = 105
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char = ;code = 32
char = (;code = 40
char = C;code = 67
char = E;code = 69
char = -;code = 45
char = U;code = 85
char = V;code = 86
char = );code = 41
char = .;code = 46
char = ;code = 32
char = T;code = 84
char = h;code = 104
char = e;code = 101
char = ;code = 32
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char = p;code = 112
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char = e;code = 101
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char = m;code = 109
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char = a;code = 97
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char = m;code = 109
char = p;code = 112
char = l;code = 108
char = e;code = 101
char = ,;code = 44
char = ;code = 32
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char = a;code = 97
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char = 7;code = 55
char = 8;code = 56
char = ;code = 32
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char = d;code = 100
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char = 2;code = 50
char = 3;code = 51
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char = j;code = 106
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char = <;code = 60
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char = u;code = 117
char = p;code = 112
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char = -;code = 45
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char = u;code = 117
char = p;code = 112
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char = ;code = 32
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char = e;code = 101
char = c;code = 99
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char = i;code = 105
char = v;code = 118
char = e;code = 101
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char = y;code = 121
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char = ;code = 32
char = a;code = 97
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char = d;code = 100
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char = h;code = 104
char = a;code = 97
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char = e;code = 101
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char = l;code = 108
char = o;code = 111
char = w;code = 119
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char = v;code = 118
char = i;code = 105
char = r;code = 114
char = o;code = 111
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char = m;code = 109
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char = a;code = 97
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char = p;code = 112
char = a;code = 97
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char = m;code = 109
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char = n;code = 110
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char = m;code = 109
char = a;code = 97
char = l;code = 108
char = ;code = 32
char = w;code = 119
char = a;code = 97
char = s;code = 115
char = t;code = 116
char = e;code = 101
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char = g;code = 103
char = e;code = 101
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char = e;code = 101
char = r;code = 114
char = a;code = 97
char = t;code = 116
char = i;code = 105
char = o;code = 111
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char = .;code = 46
char = ;code = 32
char = T;code = 84
char = h;code = 104
char = e;code = 101
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char = s;code = 115
char = e;code = 101
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char = a;code = 97
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char = a;code = 97
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char = i;code = 105
char = o;code = 111
char = n;code = 110
char = ;code = 32
char = b;code = 98
char = y;code = 121
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char = C;code = 67
char = E;code = 69
char = -;code = 45
char = C;code = 67
char = <;code = 60
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char = p;code = 112
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char = a;code = 97
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char = B;code = 66
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char = 2;code = 50
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char = m;code = 109
char = o;code = 111
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char = ;code = 8239
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char = s;code = 115
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char = p;code = 112
char = >;code = 62
char = -;code = 45
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char = /;code = 47
char = s;code = 115
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char = p;code = 112
char = >;code = 62
char = ;code = 32
char = N;code = 78
char = -;code = 45
char = t;code = 116
char = r;code = 114
char = i;code = 105
char = s;code = 115
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char = a;code = 97
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char = a;code = 97
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char = T;code = 84
char = A;code = 65
char = P;code = 80
char = S;code = 83
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char = ;code = 32
char = a;code = 97
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char = 1;code = 49
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char = ;code = 8239
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char = m;code = 109
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char = ;code = 8239
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char = <;code = 60
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char = p;code = 112
char = >;code = 62
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char = s;code = 115
char = u;code = 117
char = p;code = 112
char = >;code = 62
char = ;code = 32
char = o;code = 111
char = f;code = 102
char = ;code = 32
char = N;code = 78
char = a;code = 97
char = O;code = 79
char = H;code = 72
char = ;code = 32
char = (;code = 40
char = p;code = 112
char = H;code = 72
char = ;code = 32
char = 8;code = 56
char = .;code = 46
char = 7;code = 55
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char = .;code = 46
char = ;code = 32
char = T;code = 84
char = h;code = 104
char = e;code = 101
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char = m;code = 109
char = i;code = 105
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char = f;code = 102
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char = e;code = 101
char = c;code = 99
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char = i;code = 105
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char = (;code = 40
char = L;code = 76
char = O;code = 79
char = D;code = 68
char = );code = 41
char = ;code = 32
char = w;code = 119
char = e;code = 101
char = r;code = 114
char = e;code = 101
char = ;code = 32
char = 0;code = 48
char = .;code = 46
char = 0;code = 48
char = 1;code = 49
char = ,;code = 44
char = ;code = 32
char = 0;code = 48
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result sql = Arginine (ARG), ascorbic acid (ASC) and aspartic acid (ASP) are very popular and widely consumed active ingredients used for fatigue treatment or improvement of physical performance. For this reason, these compounds are usually available in the same pharmaceutical formulation. In the current paper, we describe for the first-time methods for simultaneous determination of ARG, ASC and ASP using capillary electrophoresis with capacitively coupled contactless conductivity detection (CE-C4D) and with UV spectrophotometric detection (CE-UV). The proposed methods are simple, rapid (78 and 23 injections h-1, respectively) and have low environmental impact (minimal waste generation). The separation by CE-C4D was achieved with a background electrolyte (BGE) composed by 20 mmol L-1 N-tris(hydroxymethyl)- methyl]-3-aminopropanesulfonic acid (TAPS) and 10 mmol L-1 of NaOH (pH 8.7). The limits of detection (LOD) were 0.01, 0.02 and 0.04 mmol L-1 for ARG, ASC and ASP, respectively. The proposed CE-UV method was optimized with a BGE composed by 10 mmol L-1 sodium tetraborate (pH 9.4). The limits of detection (LOD) were 0.03, 0.02 and 0.04 mmol L-1 for ARG, ASC and ASP, respectively. No statistically significant differences were observed (95% confidence level) between the results obtained by the developed CE methods and reference procedures (HPLC for ARG, iodometry for ASC and, acid-base titration for ASP).
Publication: Talanta 2019 Nov;204():353-358.
Publication Date: Nov 2019
Study Author(s): Costa Brenda M C BMC ; Prado Aliceana A AA ; Oliveira Thiago C TC ; Bressan Lucas P LP ; Munoz Rodrigo A A RAA ; Batista Alex D AD ; da Silva José A F JAF ; Richter Eduardo M EM ;
Institution: Institute of Chemistry, Federal University of Uberlandia, Av. João Naves de Avila, 2121, 38400-902, Uberlandia, MG, Brazil; Institute of Chemistry, State University of Campinas, UNICAMP, 13083-861, Campinas, SP, Brazil.
Shortcut link to this study:
Publication Date: Nov 2019
Study Author(s): Costa Brenda M C BMC ; Prado Aliceana A AA ; Oliveira Thiago C TC ; Bressan Lucas P LP ; Munoz Rodrigo A A RAA ; Batista Alex D AD ; da Silva José A F JAF ; Richter Eduardo M EM ;
Institution: Institute of Chemistry, Federal University of Uberlandia, Av. João Naves de Avila, 2121, 38400-902, Uberlandia, MG, Brazil; Institute of Chemistry, State University of Campinas, UNICAMP, 13083-861, Campinas, SP, Brazil.
Shortcut link to this study:
Arginine (ARG), ascorbic acid (ASC) and aspartic acid (ASP) are very popular and widely consumed active ingredients used for fatigue treatment or improvement of physical performance. For this reason, these compounds are usually available in the same pharmaceutical formulation. In the current paper, we describe for the first-time methods for simultaneous determination of ARG, ASC and ASP using capillary electrophoresis with capacitively coupled contactless conductivity detection (CE-C4D) and with UV spectrophotometric detection (CE-UV). The proposed methods are simple, rapid (78 and 23 injections h-1, respectively) and have low environmental impact (minimal waste generation). The separation by CE-C4D was achieved with a background electrolyte (BGE) composed by 20 mmol L-1 N-tris(hydroxymethyl)- methyl]-3-aminopropanesulfonic acid (TAPS) and 10 mmol L-1 of NaOH (pH 8.7). The limits of detection (LOD) were 0.01, 0.02 and 0.04 mmol L-1 for ARG, ASC and ASP, respectively. The proposed CE-UV method was optimized with a BGE composed by 10 mmol L-1 sodium tetraborate (pH 9.4). The limits of detection (LOD) were 0.03, 0.02 and 0.04 mmol L-1 for ARG, ASC and ASP, respectively. No statistically significant differences were observed (95% confidence level) between the results obtained by the developed CE methods and reference procedures (HPLC for ARG, iodometry for ASC and, acid-base titration for ASP).
PMID: 31357304
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