char = C;code = 67
char = o;code = 111
char = m;code = 109
char = b;code = 98
char = i;code = 105
char = n;code = 110
char = e;code = 101
char = d;code = 100
char = ;code = 32
char = i;code = 105
char = s;code = 115
char = o;code = 111
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 = 32
char = a;code = 97
char = n;code = 110
char = d;code = 100
char = ;code = 32
char = p;code = 112
char = u;code = 117
char = r;code = 114
char = i;code = 105
char = f;code = 102
char = i;code = 105
char = c;code = 99
char = a;code = 97
char = t;code = 116
char = i;code = 105
char = o;code = 111
char = n;code = 110
char = ;code = 32
char = p;code = 112
char = r;code = 114
char = o;code = 111
char = c;code = 99
char = e;code = 101
char = d;code = 100
char = u;code = 117
char = r;code = 114
char = e;code = 101
char = s;code = 115
char = ;code = 32
char = p;code = 112
char = r;code = 114
char = i;code = 105
char = o;code = 111
char = r;code = 114
char = ;code = 32
char = t;code = 116
char = o;code = 111
char = ;code = 32
char = t;code = 116
char = h;code = 104
char = e;code = 101
char = ;code = 32
char = h;code = 104
char = i;code = 105
char = g;code = 103
char = h;code = 104
char = -;code = 45
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 = 32
char = l;code = 108
char = i;code = 105
char = q;code = 113
char = u;code = 117
char = i;code = 105
char = d;code = 100
char = ;code = 32
char = c;code = 99
char = h;code = 104
char = r;code = 114
char = o;code = 111
char = m;code = 109
char = a;code = 97
char = t;code = 116
char = o;code = 111
char = g;code = 103
char = r;code = 114
char = a;code = 97
char = p;code = 112
char = h;code = 104
char = i;code = 105
char = c;code = 99
char = -;code = 45
char = i;code = 105
char = o;code = 111
char = n;code = 110
char = -;code = 45
char = t;code = 116
char = r;code = 114
char = a;code = 97
char = p;code = 112
char = ;code = 32
char = t;code = 116
char = a;code = 97
char = n;code = 110
char = d;code = 100
char = e;code = 101
char = m;code = 109
char = ;code = 32
char = m;code = 109
char = a;code = 97
char = s;code = 115
char = s;code = 115
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 = 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 = 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 = e;code = 101
char = s;code = 115
char = t;code = 116
char = r;code = 114
char = o;code = 111
char = g;code = 103
char = e;code = 101
char = n;code = 110
char = s;code = 115
char = ;code = 32
char = a;code = 97
char = n;code = 110
char = d;code = 100
char = ;code = 32
char = t;code = 116
char = h;code = 104
char = e;code = 101
char = i;code = 105
char = r;code = 114
char = ;code = 32
char = c;code = 99
char = o;code = 111
char = n;code = 110
char = j;code = 106
char = u;code = 117
char = g;code = 103
char = a;code = 97
char = t;code = 116
char = e;code = 101
char = s;code = 115
char = ;code = 32
char = i;code = 105
char = n;code = 110
char = ;code = 32
char = r;code = 114
char = i;code = 105
char = v;code = 118
char = e;code = 101
char = r;code = 114
char = ;code = 32
char = s;code = 115
char = e;code = 101
char = d;code = 100
char = i;code = 105
char = m;code = 109
char = e;code = 101
char = n;code = 110
char = t;code = 116
char = s;code = 115
char = .;code = 46
result sql = Combined isolation and purification procedures prior to the high-performance liquid chromatographic-ion-trap tandem mass spectrometric determination of estrogens and their conjugates in river sediments.
Combined isolation and purification procedures prior to the high-performance liquid chromatographic-ion-trap tandem mass spectrometric determination of estrogens and their conjugates in river sediments.
char = A;code = 65
char = ;code = 32
char = f;code = 102
char = a;code = 97
char = s;code = 115
char = t;code = 116
char = ;code = 32
char = a;code = 97
char = n;code = 110
char = d;code = 100
char = ;code = 32
char = s;code = 115
char = e;code = 101
char = n;code = 110
char = s;code = 115
char = i;code = 105
char = t;code = 116
char = i;code = 105
char = v;code = 118
char = e;code = 101
char = ;code = 32
char = a;code = 97
char = n;code = 110
char = a;code = 97
char = l;code = 108
char = y;code = 121
char = t;code = 116
char = i;code = 105
char = c;code = 99
char = a;code = 97
char = l;code = 108
char = ;code = 32
char = p;code = 112
char = r;code = 114
char = o;code = 111
char = c;code = 99
char = e;code = 101
char = d;code = 100
char = u;code = 117
char = r;code = 114
char = e;code = 101
char = ;code = 32
char = h;code = 104
char = a;code = 97
char = s;code = 115
char = ;code = 32
char = b;code = 98
char = e;code = 101
char = e;code = 101
char = n;code = 110
char = ;code = 32
char = d;code = 100
char = e;code = 101
char = v;code = 118
char = e;code = 101
char = l;code = 108
char = o;code = 111
char = p;code = 112
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 = t;code = 116
char = h;code = 104
char = e;code = 101
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 = 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 = a;code = 97
char = n;code = 110
char = d;code = 100
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 = l;code = 108
char = p;code = 112
char = h;code = 104
char = a;code = 97
char = -;code = 45
char = e;code = 101
char = s;code = 115
char = t;code = 116
char = r;code = 114
char = a;code = 97
char = d;code = 100
char = i;code = 105
char = o;code = 111
char = l;code = 108
char = ,;code = 44
char = ;code = 32
char = b;code = 98
char = e;code = 101
char = t;code = 116
char = a;code = 97
char = -;code = 45
char = e;code = 101
char = s;code = 115
char = t;code = 116
char = r;code = 114
char = a;code = 97
char = d;code = 100
char = i;code = 105
char = o;code = 111
char = l;code = 108
char = ,;code = 44
char = ;code = 32
char = e;code = 101
char = s;code = 115
char = t;code = 116
char = r;code = 114
char = i;code = 105
char = o;code = 111
char = l;code = 108
char = ,;code = 44
char = ;code = 32
char = e;code = 101
char = s;code = 115
char = t;code = 116
char = r;code = 114
char = o;code = 111
char = n;code = 110
char = e;code = 101
char = ;code = 32
char = a;code = 97
char = n;code = 110
char = d;code = 100
char = ;code = 32
char = e;code = 101
char = t;code = 116
char = h;code = 104
char = y;code = 121
char = n;code = 110
char = y;code = 121
char = l;code = 108
char = e;code = 101
char = s;code = 115
char = t;code = 116
char = r;code = 114
char = a;code = 97
char = d;code = 100
char = i;code = 105
char = o;code = 111
char = l;code = 108
char = ;code = 32
char = a;code = 97
char = n;code = 110
char = d;code = 100
char = ;code = 32
char = t;code = 116
char = h;code = 104
char = e;code = 101
char = i;code = 105
char = r;code = 114
char = ;code = 32
char = s;code = 115
char = u;code = 117
char = l;code = 108
char = f;code = 102
char = a;code = 97
char = t;code = 116
char = e;code = 101
char = ,;code = 44
char = ;code = 32
char = g;code = 103
char = l;code = 108
char = u;code = 117
char = c;code = 99
char = u;code = 117
char = r;code = 114
char = o;code = 111
char = n;code = 110
char = i;code = 105
char = d;code = 100
char = e;code = 101
char = ;code = 32
char = a;code = 97
char = n;code = 110
char = d;code = 100
char = ;code = 32
char = a;code = 97
char = c;code = 99
char = e;code = 101
char = t;code = 116
char = a;code = 97
char = t;code = 116
char = e;code = 101
char = ;code = 32
char = c;code = 99
char = o;code = 111
char = n;code = 110
char = j;code = 106
char = u;code = 117
char = g;code = 103
char = a;code = 97
char = t;code = 116
char = e;code = 101
char = s;code = 115
char = ;code = 32
char = i;code = 105
char = n;code = 110
char = ;code = 32
char = r;code = 114
char = i;code = 105
char = v;code = 118
char = e;code = 101
char = r;code = 114
char = ;code = 32
char = s;code = 115
char = e;code = 101
char = d;code = 100
char = i;code = 105
char = m;code = 109
char = e;code = 101
char = n;code = 110
char = t;code = 116
char = s;code = 115
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 = c;code = 99
char = e;code = 101
char = d;code = 100
char = u;code = 117
char = r;code = 114
char = e;code = 101
char = ;code = 32
char = i;code = 105
char = n;code = 110
char = c;code = 99
char = l;code = 108
char = u;code = 117
char = d;code = 100
char = e;code = 101
char = s;code = 115
char = ;code = 32
char = a;code = 97
char = ;code = 32
char = m;code = 109
char = i;code = 105
char = c;code = 99
char = r;code = 114
char = o;code = 111
char = w;code = 119
char = a;code = 97
char = v;code = 118
char = e;code = 101
char = -;code = 45
char = a;code = 97
char = s;code = 115
char = s;code = 115
char = i;code = 105
char = s;code = 115
char = t;code = 116
char = e;code = 101
char = d;code = 100
char = ;code = 32
char = e;code = 101
char = x;code = 120
char = t;code = 116
char = r;code = 114
char = a;code = 97
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 = M;code = 77
char = A;code = 65
char = E;code = 69
char = );code = 41
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 = q;code = 113
char = u;code = 117
char = e;code = 101
char = o;code = 111
char = u;code = 117
char = s;code = 115
char = ;code = 32
char = m;code = 109
char = e;code = 101
char = t;code = 116
char = h;code = 104
char = a;code = 97
char = n;code = 110
char = o;code = 111
char = l;code = 108
char = ;code = 32
char = (;code = 40
char = 2;code = 50
char = 5;code = 53
char = :;code = 58
char = 7;code = 55
char = 5;code = 53
char = ,;code = 44
char = ;code = 32
char = v;code = 118
char = /;code = 47
char = v;code = 118
char = );code = 41
char = ;code = 32
char = a;code = 97
char = t;code = 116
char = ;code = 32
char = 1;code = 49
char = 0;code = 48
char = 0;code = 48
char = ;code = 32
char = d;code = 100
char = e;code = 101
char = g;code = 103
char = r;code = 114
char = e;code = 101
char = e;code = 101
char = s;code = 115
char = ;code = 32
char = C;code = 67
char = ;code = 32
char = i;code = 105
char = n;code = 110
char = ;code = 32
char = 1;code = 49
char = 0;code = 48
char = ;code = 32
char = m;code = 109
char = i;code = 105
char = n;code = 110
char = ,;code = 44
char = ;code = 32
char = a;code = 97
char = ;code = 32
char = c;code = 99
char = l;code = 108
char = e;code = 101
char = a;code = 97
char = n;code = 110
char = -;code = 45
char = u;code = 117
char = p;code = 112
char = ;code = 32
char = o;code = 111
char = n;code = 110
char = ;code = 32
char = O;code = 79
char = a;code = 97
char = s;code = 115
char = i;code = 105
char = s;code = 115
char = ;code = 32
char = W;code = 87
char = A;code = 65
char = X;code = 88
char = ;code = 32
char = c;code = 99
char = a;code = 97
char = r;code = 114
char = t;code = 116
char = r;code = 114
char = i;code = 105
char = d;code = 100
char = g;code = 103
char = e;code = 101
char = ;code = 32
char = a;code = 97
char = n;code = 110
char = d;code = 100
char = ;code = 32
char = a;code = 97
char = ;code = 32
char = h;code = 104
char = i;code = 105
char = g;code = 103
char = h;code = 104
char = -;code = 45
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 = 32
char = l;code = 108
char = i;code = 105
char = q;code = 113
char = u;code = 117
char = i;code = 105
char = d;code = 100
char = ;code = 32
char = c;code = 99
char = h;code = 104
char = r;code = 114
char = o;code = 111
char = m;code = 109
char = a;code = 97
char = t;code = 116
char = o;code = 111
char = g;code = 103
char = r;code = 114
char = a;code = 97
char = p;code = 112
char = h;code = 104
char = y;code = 121
char = -;code = 45
char = i;code = 105
char = o;code = 111
char = n;code = 110
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char = t;code = 116
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char = a;code = 97
char = p;code = 112
char = ;code = 32
char = t;code = 116
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char = d;code = 100
char = e;code = 101
char = m;code = 109
char = ;code = 32
char = m;code = 109
char = a;code = 97
char = s;code = 115
char = s;code = 115
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 = m;code = 109
char = e;code = 101
char = t;code = 116
char = r;code = 114
char = y;code = 121
char = ;code = 32
char = (;code = 40
char = H;code = 72
char = P;code = 80
char = L;code = 76
char = C;code = 67
char = -;code = 45
char = I;code = 73
char = T;code = 84
char = -;code = 45
char = M;code = 77
char = S;code = 83
char = /;code = 47
char = M;code = 77
char = S;code = 83
char = );code = 41
char = ;code = 32
char = w;code = 119
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char = h;code = 104
char = ;code = 32
char = e;code = 101
char = l;code = 108
char = e;code = 101
char = c;code = 99
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char = p;code = 112
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char = a;code = 97
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char = i;code = 105
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char = i;code = 105
char = z;code = 122
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
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char = r;code = 114
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char = c;code = 99
char = o;code = 111
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char = c;code = 99
char = h;code = 104
char = ;code = 32
char = c;code = 99
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char = m;code = 109
char = p;code = 112
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char = u;code = 117
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char = d;code = 100
char = s;code = 115
char = ;code = 32
char = r;code = 114
char = a;code = 97
char = n;code = 110
char = g;code = 103
char = e;code = 101
char = d;code = 100
char = ;code = 32
char = f;code = 102
char = r;code = 114
char = o;code = 111
char = m;code = 109
char = ;code = 32
char = 8;code = 56
char = 3;code = 51
char = ;code = 32
char = t;code = 116
char = o;code = 111
char = ;code = 32
char = 1;code = 49
char = 0;code = 48
char = 7;code = 55
char = %;code = 37
char = ;code = 32
char = a;code = 97
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char = d;code = 100
char = ;code = 32
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char = h;code = 104
char = e;code = 101
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char = e;code = 101
char = a;code = 97
char = t;code = 116
char = a;code = 97
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char = i;code = 105
char = t;code = 116
char = y;code = 121
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char = r;code = 114
char = e;code = 101
char = p;code = 112
char = r;code = 114
char = e;code = 101
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char = e;code = 101
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char = e;code = 101
char = d;code = 100
char = ;code = 32
char = a;code = 97
char = s;code = 115
char = ;code = 32
char = R;code = 82
char = S;code = 83
char = D;code = 68
char = s;code = 115
char = ;code = 32
char = r;code = 114
char = a;code = 97
char = n;code = 110
char = g;code = 103
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char = d;code = 100
char = ;code = 32
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char = 4;code = 52
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char = t;code = 116
char = o;code = 111
char = ;code = 32
char = 9;code = 57
char = .;code = 46
char = 6;code = 54
char = %;code = 37
char = .;code = 46
char = ;code = 32
char = T;code = 84
char = h;code = 104
char = e;code = 101
char = ;code = 32
char = l;code = 108
char = i;code = 105
char = m;code = 109
char = i;code = 105
char = t;code = 116
char = s;code = 115
char = ;code = 32
char = o;code = 111
char = f;code = 102
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
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char = n;code = 110
char = ;code = 32
char = (;code = 40
char = L;code = 76
char = O;code = 79
char = D;code = 68
char = s;code = 115
char = );code = 41
char = ;code = 32
char = w;code = 119
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char = r;code = 114
char = e;code = 101
char = ;code = 32
char = d;code = 100
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char = w;code = 119
char = n;code = 110
char = ;code = 32
char = t;code = 116
char = o;code = 111
char = ;code = 32
char = 1;code = 49
char = ;code = 32
char = n;code = 110
char = g;code = 103
char = ;code = 32
char = g;code = 103
char = (;code = 40
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char = ;code = 32
char = T;code = 84
char = h;code = 104
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char = ;code = 32
char = a;code = 97
char = n;code = 110
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char = i;code = 105
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char = l;code = 108
char = ;code = 32
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char = e;code = 101
char = r;code = 114
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char = o;code = 111
char = r;code = 114
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char = a;code = 97
char = n;code = 110
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char = e;code = 101
char = ;code = 32
char = o;code = 111
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char = ;code = 32
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char = h;code = 104
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
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char = w;code = 119
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char = e;code = 101
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char = ;code = 32
char = u;code = 117
char = s;code = 115
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char = n;code = 110
char = g;code = 103
char = ;code = 32
char = d;code = 100
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char = e;code = 101
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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 = f;code = 102
char = r;code = 114
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char = ;code = 32
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char = t;code = 116
char = r;code = 114
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char = n;code = 110
char = s;code = 115
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char = ;code = 32
char = r;code = 114
char = i;code = 105
char = v;code = 118
char = e;code = 101
char = r;code = 114
char = ;code = 32
char = s;code = 115
char = e;code = 101
char = d;code = 100
char = i;code = 105
char = m;code = 109
char = e;code = 101
char = n;code = 110
char = t;code = 116
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result sql = A fast and sensitive analytical procedure has been developed for the simultaneous separation and determination of alpha-estradiol, beta-estradiol, estriol, estrone and ethynylestradiol and their sulfate, glucuronide and acetate conjugates in river sediments. The procedure includes a microwave-assisted extraction (MAE) with aqueous methanol (25:75, v/v) at 100 degrees C in 10 min, a clean-up on Oasis WAX cartridge and a high-performance liquid chromatography-ion-trap tandem mass spectrometry (HPLC-IT-MS/MS) with electrospray ionization. The recovery for each compounds ranged from 83 to 107% and the repeatability represented as RSDs ranged from 4.9 to 9.6%. The limits of detection (LODs) were down to 1 ng g(-1). The analytical performance of the method was evaluated using determination of free and conjugated estrogens in river sediments.

Publication: J Chromatogr A 2007 Nov 9 ;1171(1-2)::80-9.
Publication Date: 2007 Nov 9
Study Author(s): Matejícek, David;Houserová, Pavlína;Kubán, Vlastimil;
Institution: Department of Chemistry and Biochemistry, Mendel University of Agriculture and Forestry, Zemedelská 1, Brno CZ 61300, Czech Republic.
Shortcut link to this study:
A fast and sensitive analytical procedure has been developed for the simultaneous separation and determination of alpha-estradiol, beta-estradiol, estriol, estrone and ethynylestradiol and their sulfate, glucuronide and acetate conjugates in river sediments. The procedure includes a microwave-assisted extraction (MAE) with aqueous methanol (25:75, v/v) at 100 degrees C in 10 min, a clean-up on Oasis WAX cartridge and a high-performance liquid chromatography-ion-trap tandem mass spectrometry (HPLC-IT-MS/MS) with electrospray ionization. The recovery for each compounds ranged from 83 to 107% and the repeatability represented as RSDs ranged from 4.9 to 9.6%. The limits of detection (LODs) were down to 1 ng g(-1). The analytical performance of the method was evaluated using determination of free and conjugated estrogens in river sediments.
PMID: 17927994

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