char = S;code = 83
char = u;code = 117
char = r;code = 114
char = v;code = 118
char = e;code = 101
char = y;code = 121
char = ;code = 32
char = o;code = 111
char = f;code = 102
char = ;code = 32
char = t;code = 116
char = r;code = 114
char = a;code = 97
char = c;code = 99
char = e;code = 101
char = ;code = 32
char = m;code = 109
char = e;code = 101
char = t;code = 116
char = a;code = 97
char = l;code = 108
char = s;code = 115
char = ;code = 32
char = i;code = 105
char = n;code = 110
char = ;code = 32
char = d;code = 100
char = r;code = 114
char = i;code = 105
char = n;code = 110
char = k;code = 107
char = i;code = 105
char = n;code = 110
char = g;code = 103
char = ;code = 32
char = w;code = 119
char = a;code = 97
char = t;code = 116
char = e;code = 101
char = r;code = 114
char = ;code = 32
char = s;code = 115
char = u;code = 117
char = p;code = 112
char = p;code = 112
char = l;code = 108
char = i;code = 105
char = e;code = 101
char = d;code = 100
char = ;code = 32
char = t;code = 116
char = o;code = 111
char = ;code = 32
char = r;code = 114
char = u;code = 117
char = r;code = 114
char = a;code = 97
char = l;code = 108
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 = t;code = 116
char = i;code = 105
char = o;code = 111
char = n;code = 110
char = s;code = 115
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 = e;code = 101
char = a;code = 97
char = s;code = 115
char = t;code = 116
char = e;code = 101
char = r;code = 114
char = n;code = 110
char = ;code = 32
char = L;code = 76
char = l;code = 108
char = a;code = 97
char = n;code = 110
char = o;code = 111
char = s;code = 115
char = ;code = 32
char = o;code = 111
char = f;code = 102
char = ;code = 32
char = V;code = 86
char = e;code = 101
char = n;code = 110
char = e;code = 101
char = z;code = 122
char = u;code = 117
char = e;code = 101
char = l;code = 108
char = a;code = 97
char = .;code = 46
result sql = Survey of trace metals in drinking water supplied to rural populations in the eastern Llanos of Venezuela.
Survey of trace metals in drinking water supplied to rural populations in the eastern Llanos of Venezuela.
char = T;code = 84
char = o;code = 111
char = ;code = 32
char = a;code = 97
char = s;code = 115
char = c;code = 99
char = e;code = 101
char = r;code = 114
char = t;code = 116
char = a;code = 97
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 = w;code = 119
char = a;code = 97
char = t;code = 116
char = e;code = 101
char = r;code = 114
char = ;code = 32
char = q;code = 113
char = u;code = 117
char = a;code = 97
char = l;code = 108
char = i;code = 105
char = t;code = 116
char = y;code = 121
char = ;code = 32
char = f;code = 102
char = o;code = 111
char = r;code = 114
char = ;code = 32
char = h;code = 104
char = u;code = 117
char = m;code = 109
char = a;code = 97
char = n;code = 110
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 = p;code = 112
char = t;code = 116
char = i;code = 105
char = o;code = 111
char = n;code = 110
char = ,;code = 44
char = ;code = 32
char = c;code = 99
char = h;code = 104
char = e;code = 101
char = m;code = 109
char = i;code = 105
char = c;code = 99
char = a;code = 97
char = l;code = 108
char = ;code = 32
char = p;code = 112
char = a;code = 97
char = r;code = 114
char = a;code = 97
char = m;code = 109
char = e;code = 101
char = t;code = 116
char = e;code = 101
char = r;code = 114
char = s;code = 115
char = ;code = 32
char = s;code = 115
char = u;code = 117
char = c;code = 99
char = h;code = 104
char = ;code = 32
char = a;code = 97
char = s;code = 115
char = ;code = 32
char = p;code = 112
char = H;code = 72
char = ,;code = 44
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 = a;code = 97
char = n;code = 110
char = d;code = 100
char = ;code = 32
char = t;code = 116
char = o;code = 111
char = t;code = 116
char = a;code = 97
char = l;code = 108
char = ;code = 32
char = d;code = 100
char = i;code = 105
char = s;code = 115
char = s;code = 115
char = o;code = 111
char = l;code = 108
char = v;code = 118
char = e;code = 101
char = d;code = 100
char = ;code = 32
char = c;code = 99
char = a;code = 97
char = l;code = 108
char = c;code = 99
char = i;code = 105
char = u;code = 117
char = m;code = 109
char = ,;code = 44
char = ;code = 32
char = m;code = 109
char = a;code = 97
char = g;code = 103
char = n;code = 110
char = e;code = 101
char = s;code = 115
char = i;code = 105
char = u;code = 117
char = m;code = 109
char = ,;code = 44
char = ;code = 32
char = i;code = 105
char = r;code = 114
char = o;code = 111
char = n;code = 110
char = ,;code = 44
char = ;code = 32
char = a;code = 97
char = l;code = 108
char = u;code = 117
char = m;code = 109
char = i;code = 105
char = n;code = 110
char = u;code = 117
char = m;code = 109
char = ,;code = 44
char = ;code = 32
char = z;code = 122
char = i;code = 105
char = n;code = 110
char = c;code = 99
char = ,;code = 44
char = ;code = 32
char = c;code = 99
char = o;code = 111
char = p;code = 112
char = p;code = 112
char = e;code = 101
char = r;code = 114
char = ;code = 32
char = a;code = 97
char = n;code = 110
char = d;code = 100
char = ;code = 32
char = m;code = 109
char = a;code = 97
char = n;code = 110
char = g;code = 103
char = a;code = 97
char = n;code = 110
char = e;code = 101
char = s;code = 115
char = e;code = 101
char = ;code = 32
char = w;code = 119
char = e;code = 101
char = r;code = 114
char = e;code = 101
char = ;code = 32
char = m;code = 109
char = e;code = 101
char = a;code = 97
char = s;code = 115
char = u;code = 117
char = r;code = 114
char = e;code = 101
char = d;code = 100
char = ;code = 32
char = d;code = 100
char = u;code = 117
char = r;code = 114
char = i;code = 105
char = n;code = 110
char = g;code = 103
char = ;code = 32
char = f;code = 102
char = o;code = 111
char = u;code = 117
char = r;code = 114
char = ;code = 32
char = s;code = 115
char = a;code = 97
char = m;code = 109
char = p;code = 112
char = l;code = 108
char = i;code = 105
char = n;code = 110
char = g;code = 103
char = ;code = 32
char = p;code = 112
char = e;code = 101
char = r;code = 114
char = i;code = 105
char = o;code = 111
char = d;code = 100
char = s;code = 115
char = ;code = 32
char = (;code = 40
char = N;code = 78
char = o;code = 111
char = v;code = 118
char = e;code = 101
char = m;code = 109
char = b;code = 98
char = e;code = 101
char = r;code = 114
char = ;code = 32
char = 2;code = 50
char = 0;code = 48
char = 0;code = 48
char = 2;code = 50
char = ;;code = 59
char = ;code = 32
char = M;code = 77
char = a;code = 97
char = r;code = 114
char = c;code = 99
char = h;code = 104
char = ,;code = 44
char = ;code = 32
char = M;code = 77
char = a;code = 97
char = y;code = 121
char = ;code = 32
char = a;code = 97
char = n;code = 110
char = d;code = 100
char = ;code = 32
char = J;code = 74
char = u;code = 117
char = l;code = 108
char = y;code = 121
char = ;code = 32
char = 2;code = 50
char = 0;code = 48
char = 0;code = 48
char = 3;code = 51
char = );code = 41
char = ;code = 32
char = i;code = 105
char = n;code = 110
char = ;code = 32
char = d;code = 100
char = r;code = 114
char = i;code = 105
char = n;code = 110
char = k;code = 107
char = i;code = 105
char = n;code = 110
char = g;code = 103
char = ;code = 32
char = w;code = 119
char = a;code = 97
char = t;code = 116
char = e;code = 101
char = r;code = 114
char = ;code = 32
char = w;code = 119
char = e;code = 101
char = l;code = 108
char = l;code = 108
char = s;code = 115
char = ;code = 32
char = w;code = 119
char = h;code = 104
char = i;code = 105
char = c;code = 99
char = h;code = 104
char = ;code = 32
char = s;code = 115
char = u;code = 117
char = p;code = 112
char = p;code = 112
char = l;code = 108
char = y;code = 121
char = ;code = 32
char = s;code = 115
char = e;code = 101
char = v;code = 118
char = e;code = 101
char = r;code = 114
char = a;code = 97
char = l;code = 108
char = ;code = 32
char = f;code = 102
char = o;code = 111
char = r;code = 114
char = e;code = 101
char = s;code = 115
char = t;code = 116
char = ;code = 32
char = c;code = 99
char = a;code = 97
char = m;code = 109
char = p;code = 112
char = s;code = 115
char = ;code = 32
char = a;code = 97
char = n;code = 110
char = d;code = 100
char = ;code = 32
char = r;code = 114
char = u;code = 117
char = r;code = 114
char = a;code = 97
char = l;code = 108
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 = t;code = 116
char = i;code = 105
char = o;code = 111
char = n;code = 110
char = s;code = 115
char = ;code = 32
char = l;code = 108
char = o;code = 111
char = c;code = 99
char = a;code = 97
char = t;code = 116
char = e;code = 101
char = d;code = 100
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 = e;code = 101
char = a;code = 97
char = s;code = 115
char = t;code = 116
char = e;code = 101
char = r;code = 114
char = n;code = 110
char = ;code = 32
char = L;code = 76
char = l;code = 108
char = a;code = 97
char = n;code = 110
char = o;code = 111
char = s;code = 115
char = ;code = 32
char = o;code = 111
char = f;code = 102
char = ;code = 32
char = V;code = 86
char = e;code = 101
char = n;code = 110
char = e;code = 101
char = z;code = 122
char = u;code = 117
char = e;code = 101
char = l;code = 108
char = a;code = 97
char = .;code = 46
char = ;code = 32
char = C;code = 67
char = o;code = 111
char = p;code = 112
char = p;code = 112
char = e;code = 101
char = r;code = 114
char = ;code = 32
char = l;code = 108
char = e;code = 101
char = v;code = 118
char = e;code = 101
char = l;code = 108
char = s;code = 115
char = ;code = 32
char = i;code = 105
char = n;code = 110
char = ;code = 32
char = d;code = 100
char = r;code = 114
char = i;code = 105
char = n;code = 110
char = k;code = 107
char = i;code = 105
char = n;code = 110
char = g;code = 103
char = ;code = 32
char = w;code = 119
char = a;code = 97
char = t;code = 116
char = e;code = 101
char = r;code = 114
char = ;code = 32
char = i;code = 105
char = n;code = 110
char = ;code = 32
char = N;code = 78
char = o;code = 111
char = v;code = 118
char = e;code = 101
char = m;code = 109
char = b;code = 98
char = e;code = 101
char = r;code = 114
char = ;code = 32
char = 2;code = 50
char = 0;code = 48
char = 0;code = 48
char = 2;code = 50
char = ;code = 32
char = w;code = 119
char = e;code = 101
char = r;code = 114
char = e;code = 101
char = ;code = 32
char = f;code = 102
char = o;code = 111
char = u;code = 117
char = n;code = 110
char = d;code = 100
char = ;code = 32
char = t;code = 116
char = o;code = 111
char = ;code = 32
char = b;code = 98
char = e;code = 101
char = ;code = 32
char = s;code = 115
char = i;code = 105
char = g;code = 103
char = n;code = 110
char = i;code = 105
char = f;code = 102
char = i;code = 105
char = c;code = 99
char = a;code = 97
char = n;code = 110
char = t;code = 116
char = l;code = 108
char = y;code = 121
char = ;code = 32
char = h;code = 104
char = i;code = 105
char = g;code = 103
char = h;code = 104
char = e;code = 101
char = r;code = 114
char = ;code = 32
char = (;code = 40
char = P;code = 80
char = <;code = 60
char = 0;code = 48
char = .;code = 46
char = 0;code = 48
char = 5;code = 53
char = );code = 41
char = ;code = 32
char = t;code = 116
char = h;code = 104
char = a;code = 97
char = n;code = 110
char = ;code = 32
char = t;code = 116
char = h;code = 104
char = e;code = 101
char = ;code = 32
char = o;code = 111
char = t;code = 116
char = h;code = 104
char = e;code = 101
char = r;code = 114
char = ;code = 32
char = a;code = 97
char = s;code = 115
char = s;code = 115
char = e;code = 101
char = s;code = 115
char = s;code = 115
char = e;code = 101
char = d;code = 100
char = ;code = 32
char = p;code = 112
char = e;code = 101
char = r;code = 114
char = i;code = 105
char = o;code = 111
char = d;code = 100
char = s;code = 115
char = .;code = 46
char = ;code = 32
char = T;code = 84
char = e;code = 101
char = m;code = 109
char = p;code = 112
char = o;code = 111
char = r;code = 114
char = a;code = 97
char = l;code = 108
char = ;code = 32
char = v;code = 118
char = a;code = 97
char = r;code = 114
char = i;code = 105
char = a;code = 97
char = t;code = 116
char = i;code = 105
char = o;code = 111
char = n;code = 110
char = s;code = 115
char = ;code = 32
char = o;code = 111
char = f;code = 102
char = ;code = 32
char = t;code = 116
char = h;code = 104
char = e;code = 101
char = ;code = 32
char = o;code = 111
char = t;code = 116
char = h;code = 104
char = e;code = 101
char = r;code = 114
char = ;code = 32
char = p;code = 112
char = a;code = 97
char = r;code = 114
char = a;code = 97
char = m;code = 109
char = e;code = 101
char = t;code = 116
char = e;code = 101
char = r;code = 114
char = s;code = 115
char = ;code = 32
char = c;code = 99
char = o;code = 111
char = n;code = 110
char = s;code = 115
char = i;code = 105
char = d;code = 100
char = e;code = 101
char = r;code = 114
char = e;code = 101
char = d;code = 100
char = ;code = 32
char = w;code = 119
char = e;code = 101
char = r;code = 114
char = e;code = 101
char = ;code = 32
char = n;code = 110
char = o;code = 111
char = t;code = 116
char = ;code = 32
char = s;code = 115
char = t;code = 116
char = a;code = 97
char = t;code = 116
char = i;code = 105
char = s;code = 115
char = t;code = 116
char = i;code = 105
char = c;code = 99
char = a;code = 97
char = l;code = 108
char = l;code = 108
char = y;code = 121
char = ;code = 32
char = s;code = 115
char = i;code = 105
char = g;code = 103
char = n;code = 110
char = i;code = 105
char = f;code = 102
char = i;code = 105
char = c;code = 99
char = a;code = 97
char = n;code = 110
char = t;code = 116
char = .;code = 46
char = ;code = 32
char = C;code = 67
char = a;code = 97
char = l;code = 108
char = c;code = 99
char = i;code = 105
char = u;code = 117
char = m;code = 109
char = ;code = 32
char = a;code = 97
char = n;code = 110
char = d;code = 100
char = ;code = 32
char = m;code = 109
char = a;code = 97
char = g;code = 103
char = n;code = 110
char = e;code = 101
char = s;code = 115
char = i;code = 105
char = u;code = 117
char = m;code = 109
char = ;code = 32
char = c;code = 99
char = o;code = 111
char = n;code = 110
char = c;code = 99
char = e;code = 101
char = n;code = 110
char = t;code = 116
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 = s;code = 115
char = ;code = 32
char = w;code = 119
char = e;code = 101
char = r;code = 114
char = e;code = 101
char = ;code = 32
char = f;code = 102
char = o;code = 111
char = u;code = 117
char = n;code = 110
char = d;code = 100
char = ;code = 32
char = t;code = 116
char = o;code = 111
char = ;code = 32
char = b;code = 98
char = e;code = 101
char = ;code = 32
char = e;code = 101
char = x;code = 120
char = t;code = 116
char = r;code = 114
char = e;code = 101
char = m;code = 109
char = e;code = 101
char = l;code = 108
char = y;code = 121
char = ;code = 32
char = l;code = 108
char = o;code = 111
char = w;code = 119
char = ;code = 32
char = (;code = 40
char = m;code = 109
char = e;code = 101
char = a;code = 97
char = n;code = 110
char = ;code = 32
char = c;code = 99
char = o;code = 111
char = n;code = 110
char = c;code = 99
char = e;code = 101
char = n;code = 110
char = t;code = 116
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 = 43
char = /;code = 47
char = -;code = 45
char = S;code = 83
char = .;code = 46
char = D;code = 68
char = .;code = 46
char = ;code = 32
char = o;code = 111
char = f;code = 102
char = ;code = 32
char = 0;code = 48
char = .;code = 46
char = 2;code = 50
char = 7;code = 55
char = +;code = 43
char = /;code = 47
char = -;code = 45
char = 0;code = 48
char = .;code = 46
char = 2;code = 50
char = 5;code = 53
char = m;code = 109
char = g;code = 103
char = /;code = 47
char = l;code = 108
char = ;code = 32
char = f;code = 102
char = o;code = 111
char = r;code = 114
char = ;code = 32
char = C;code = 67
char = a;code = 97
char = ;code = 32
char = a;code = 97
char = n;code = 110
char = d;code = 100
char = ;code = 32
char = 0;code = 48
char = .;code = 46
char = 2;code = 50
char = 1;code = 49
char = 9;code = 57
char = +;code = 43
char = /;code = 47
char = -;code = 45
char = 0;code = 48
char = .;code = 46
char = 1;code = 49
char = 1;code = 49
char = 8;code = 56
char = ;code = 32
char = f;code = 102
char = o;code = 111
char = r;code = 114
char = ;code = 32
char = M;code = 77
char = g;code = 103
char = );code = 41
char = ;code = 32
char = d;code = 100
char = u;code = 117
char = r;code = 114
char = i;code = 105
char = n;code = 110
char = g;code = 103
char = ;code = 32
char = t;code = 116
char = h;code = 104
char = e;code = 101
char = ;code = 32
char = f;code = 102
char = o;code = 111
char = u;code = 117
char = r;code = 114
char = ;code = 32
char = s;code = 115
char = a;code = 97
char = m;code = 109
char = p;code = 112
char = l;code = 108
char = i;code = 105
char = n;code = 110
char = g;code = 103
char = ;code = 32
char = p;code = 112
char = e;code = 101
char = r;code = 114
char = i;code = 105
char = o;code = 111
char = d;code = 100
char = s;code = 115
char = ,;code = 44
char = ;code = 32
char = p;code = 112
char = r;code = 114
char = o;code = 111
char = b;code = 98
char = a;code = 97
char = b;code = 98
char = l;code = 108
char = y;code = 121
char = ;code = 32
char = b;code = 98
char = e;code = 101
char = c;code = 99
char = a;code = 97
char = u;code = 117
char = s;code = 115
char = e;code = 101
char = ;code = 32
char = o;code = 111
char = f;code = 102
char = ;code = 32
char = t;code = 116
char = h;code = 104
char = e;code = 101
char = ;code = 32
char = c;code = 99
char = a;code = 97
char = r;code = 114
char = b;code = 98
char = o;code = 111
char = n;code = 110
char = a;code = 97
char = t;code = 116
char = e;code = 101
char = ;code = 32
char = b;code = 98
char = e;code = 101
char = a;code = 97
char = r;code = 114
char = i;code = 105
char = n;code = 110
char = g;code = 103
char = ;code = 32
char = s;code = 115
char = c;code = 99
char = a;code = 97
char = r;code = 114
char = c;code = 99
char = i;code = 105
char = t;code = 116
char = y;code = 121
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 = o;code = 111
char = i;code = 105
char = l;code = 108
char = s;code = 115
char = ;code = 32
char = l;code = 108
char = i;code = 105
char = t;code = 116
char = h;code = 104
char = i;code = 105
char = c;code = 99
char = ;code = 32
char = c;code = 99
char = o;code = 111
char = m;code = 109
char = p;code = 112
char = o;code = 111
char = n;code = 110
char = e;code = 101
char = n;code = 110
char = t;code = 116
char = .;code = 46
char = ;code = 32
char = T;code = 84
char = h;code = 104
char = e;code = 101
char = ;code = 32
char = r;code = 114
char = e;code = 101
char = s;code = 115
char = t;code = 116
char = ;code = 32
char = o;code = 111
char = f;code = 102
char = ;code = 32
char = t;code = 116
char = h;code = 104
char = e;code = 101
char = ;code = 32
char = m;code = 109
char = e;code = 101
char = t;code = 116
char = a;code = 97
char = l;code = 108
char = s;code = 115
char = ;code = 32
char = c;code = 99
char = o;code = 111
char = m;code = 109
char = p;code = 112
char = l;code = 108
char = i;code = 105
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 = t;code = 116
char = h;code = 104
char = e;code = 101
char = ;code = 32
char = V;code = 86
char = e;code = 101
char = n;code = 110
char = e;code = 101
char = z;code = 122
char = u;code = 117
char = e;code = 101
char = l;code = 108
char = a;code = 97
char = n;code = 110
char = ;code = 32
char = a;code = 97
char = n;code = 110
char = d;code = 100
char = ;code = 32
char = I;code = 73
char = n;code = 110
char = t;code = 116
char = e;code = 101
char = r;code = 114
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 = a;code = 97
char = l;code = 108
char = ;code = 32
char = g;code = 103
char = u;code = 117
char = i;code = 105
char = d;code = 100
char = e;code = 101
char = l;code = 108
char = i;code = 105
char = n;code = 110
char = e;code = 101
char = s;code = 115
char = ;code = 32
char = o;code = 111
char = f;code = 102
char = ;code = 32
char = q;code = 113
char = u;code = 117
char = a;code = 97
char = l;code = 108
char = i;code = 105
char = t;code = 116
char = y;code = 121
char = ;code = 32
char = c;code = 99
char = r;code = 114
char = i;code = 105
char = t;code = 116
char = e;code = 101
char = r;code = 114
char = i;code = 105
char = a;code = 97
char = ;code = 32
char = f;code = 102
char = o;code = 111
char = r;code = 114
char = ;code = 32
char = d;code = 100
char = r;code = 114
char = i;code = 105
char = n;code = 110
char = k;code = 107
char = i;code = 105
char = n;code = 110
char = g;code = 103
char = ;code = 32
char = w;code = 119
char = a;code = 97
char = t;code = 116
char = e;code = 101
char = r;code = 114
char = .;code = 46
char = <;code = 60
char = b;code = 98
char = r;code = 114
char = /;code = 47
char = >;code = 62
result sql = To ascertain the water quality for human consumption, chemical parameters such as pH, conductivity and total dissolved calcium, magnesium, iron, aluminum, zinc, copper and manganese were measured during four sampling periods (November 2002; March, May and July 2003) in drinking water wells which supply several forest camps and rural populations located in the eastern Llanos of Venezuela. Copper levels in drinking water in November 2002 were found to be significantly higher (P<0.05) than the other assessed periods. Temporal variations of the other parameters considered were not statistically significant. Calcium and magnesium concentrations were found to be extremely low (mean concentration+/-S.D. of 0.27+/-0.25mg/l for Ca and 0.219+/-0.118 for Mg) during the four sampling periods, probably because of the carbonate bearing scarcity in the soils lithic component. The rest of the metals complied with the Venezuelan and International guidelines of quality criteria for drinking water.

Publication: J. Environ. Manage. 2009 Feb ;90(2)::752-9. :doi: 10.1016/j.jenvman.2008.01.005.
Publication Date: 2009 Feb
Study Author(s): Mora, Abrahan;Mac-Quhae, César;Calzadilla, Malvis;Sánchez, Luzmila;
Institution: Laboratorio de Fisicoquímica, Estación de Investigaciones Hidrobiológicas de Guayana, Fundación La Salle de Ciencias Naturales, San Félix 8051, Estado Bolívar, Venezuela. [email protected]
Shortcut link to this study:
To ascertain the water quality for human consumption, chemical parameters such as pH, conductivity and total dissolved calcium, magnesium, iron, aluminum, zinc, copper and manganese were measured during four sampling periods (November 2002; March, May and July 2003) in drinking water wells which supply several forest camps and rural populations located in the eastern Llanos of Venezuela. Copper levels in drinking water in November 2002 were found to be significantly higher (P<0.05) than the other assessed periods. Temporal variations of the other parameters considered were not statistically significant. Calcium and magnesium concentrations were found to be extremely low (mean concentration+/-S.D. of 0.27+/-0.25mg/l for Ca and 0.219+/-0.118 for Mg) during the four sampling periods, probably because of the carbonate bearing scarcity in the soils lithic component. The rest of the metals complied with the Venezuelan and International guidelines of quality criteria for drinking water.
PMID: 18313200

Have comments? Post them here:

comments powered by Disqus

Get breaking news about nutritional cures, dangerous chemicals, superfoods . and more.

Subscribe to the FREE Natural News email newsletter. Your privacy is protected.