char = D;code = 68 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 = m;code = 109 char = e;code = 101 char = r;code = 114 char = c;code = 99 char = u;code = 117 char = r;code = 114 char = y;code = 121 char = ;code = 32 char = i;code = 105 char = n;code = 110 char = ;code = 32 char = a;code = 97 char = m;code = 109 char = b;code = 98 char = i;code = 105 char = e;code = 101 char = n;code = 110 char = t;code = 116 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 = a;code = 97 char = m;code = 109 char = p;code = 112 char = l;code = 108 char = e;code = 101 char = s;code = 115 char = ;code = 32 char = b;code = 98 char = y;code = 121 char = ;code = 32 char = a;code = 97 char = n;code = 110 char = o;code = 111 char = d;code = 100 char = i;code = 105 char = c;code = 99 char = ;code = 32 char = s;code = 115 char = t;code = 116 char = r;code = 114 char = i;code = 105 char = p;code = 112 char = p;code = 112 char = i;code = 105 char = n;code = 110 char = g;code = 103 char = ;code = 32 char = v;code = 118 char = o;code = 111 char = l;code = 108 char = t;code = 116 char = a;code = 97 char = m;code = 109 char = m;code = 109 char = e;code = 101 char = t;code = 116 char = r;code = 114 char = y;code = 121 char = ;code = 32 char = o;code = 111 char = n;code = 110 char = ;code = 32 char = s;code = 115 char = c;code = 99 char = r;code = 114 char = e;code = 101 char = e;code = 101 char = n;code = 110 char = -;code = 45 char = p;code = 112 char = r;code = 114 char = i;code = 105 char = n;code = 110 char = t;code = 116 char = e;code = 101 char = d;code = 100 char = ;code = 32 char = g;code = 103 char = o;code = 111 char = l;code = 108 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 = d;code = 100 char = e;code = 101 char = s;code = 115 char = .;code = 46 result sql = Determination of mercury in ambient water samples by anodic stripping voltammetry on screen-printed gold electrodes.
Determination of mercury in ambient water samples by anodic stripping voltammetry on screen-printed gold electrodes.char = T;code = 84 char = h;code = 104 char = e;code = 101 char = ;code = 32 char = a;code = 97 char = p;code = 112 char = p;code = 112 char = l;code = 108 char = i;code = 105 char = c;code = 99 char = a;code = 97 char = b;code = 98 char = i;code = 105 char = l;code = 108 char = i;code = 105 char = t;code = 116 char = y;code = 121 char = ;code = 32 char = o;code = 111 char = f;code = 102 char = ;code = 32 char = c;code = 99 char = o;code = 111 char = m;code = 109 char = m;code = 109 char = e;code = 101 char = r;code = 114 char = c;code = 99 char = i;code = 105 char = a;code = 97 char = l;code = 108 char = ;code = 32 char = s;code = 115 char = c;code = 99 char = r;code = 114 char = e;code = 101 char = e;code = 101 char = n;code = 110 char = -;code = 45 char = p;code = 112 char = r;code = 114 char = i;code = 105 char = n;code = 110 char = t;code = 116 char = e;code = 101 char = d;code = 100 char = ;code = 32 char = g;code = 103 char = o;code = 111 char = l;code = 108 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 = d;code = 100 char = e;code = 101 char = s;code = 115 char = ;code = 32 char = (;code = 40 char = S;code = 83 char = P;code = 80 char = G;code = 71 char = E;code = 69 char = s;code = 115 char = );code = 41 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 = 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 = H;code = 72 char = g;code = 103 char = (;code = 40 char = I;code = 73 char = I;code = 73 char = );code = 41 char = ;code = 32 char = i;code = 105 char = n;code = 110 char = ;code = 32 char = a;code = 97 char = m;code = 109 char = b;code = 98 char = i;code = 105 char = e;code = 101 char = n;code = 110 char = t;code = 116 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 = a;code = 97 char = m;code = 109 char = p;code = 112 char = l;code = 108 char = e;code = 101 char = s;code = 115 char = ;code = 32 char = b;code = 98 char = y;code = 121 char = ;code = 32 char = s;code = 115 char = q;code = 113 char = u;code = 117 char = a;code = 97 char = r;code = 114 char = e;code = 101 char = ;code = 32 char = w;code = 119 char = a;code = 97 char = v;code = 118 char = e;code = 101 char = ;code = 32 char = a;code = 97 char = n;code = 110 char = o;code = 111 char = d;code = 100 char = i;code = 105 char = c;code = 99 char = ;code = 32 char = s;code = 115 char = t;code = 116 char = r;code = 114 char = i;code = 105 char = p;code = 112 char = p;code = 112 char = i;code = 105 char = n;code = 110 char = g;code = 103 char = ;code = 32 char = v;code = 118 char = o;code = 111 char = l;code = 108 char = t;code = 116 char = a;code = 97 char = m;code = 109 char = m;code = 109 char = e;code = 101 char = t;code = 116 char = r;code = 114 char = y;code = 121 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 = m;code = 109 char = o;code = 111 char = n;code = 110 char = s;code = 115 char = t;code = 116 char = r;code = 114 char = a;code = 97 char = t;code = 116 char = e;code = 101 char = d;code = 100 char = .;code = 46 char = ;code = 32 char = E;code = 69 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 = d;code = 100 char = e;code = 101 char = ;code = 32 char = c;code = 99 char = o;code = 111 char = n;code = 110 char = d;code = 100 char = i;code = 105 char = t;code = 116 char = i;code = 105 char = o;code = 111 char = n;code = 110 char = i;code = 105 char = n;code = 110 char = g;code = 103 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 = 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 = a;code = 97 char = n;code = 110 char = d;code = 100 char = ;code = 32 char = i;code = 105 char = n;code = 110 char = s;code = 115 char = t;code = 116 char = r;code = 114 char = u;code = 117 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 = v;code = 118 char = a;code = 97 char = r;code = 114 char = i;code = 105 char = a;code = 97 char = b;code = 98 char = l;code = 108 char = e;code = 101 char = s;code = 115 char = ;code = 32 char = h;code = 104 char = a;code = 97 char = v;code = 118 char = e;code = 101 char = ;code = 32 char = b;code = 98 char = e;code = 101 char = e;code = 101 char = n;code = 110 char = ;code = 32 char = o;code = 111 char = p;code = 112 char = t;code = 116 char = i;code = 105 char = m;code = 109 char = i;code = 105 char = z;code = 122 char = e;code = 101 char = d;code = 100 char = ;code = 32 char = t;code = 116 char = o;code = 111 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 = ;code = 32 char = a;code = 97 char = ;code = 32 char = r;code = 114 char = e;code = 101 char = l;code = 108 char = i;code = 105 char = a;code = 97 char = b;code = 98 char = l;code = 108 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 = ;code = 32 char = c;code = 99 char = a;code = 97 char = p;code = 112 char = a;code = 97 char = b;code = 98 char = l;code = 108 char = e;code = 101 char = ;code = 32 char = o;code = 111 char = f;code = 102 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 = i;code = 105 char = n;code = 110 char = g;code = 103 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 = m;code = 109 char = e;code = 101 char = r;code = 114 char = c;code = 99 char = u;code = 117 char = r;code = 114 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 = l;code = 108 char = o;code = 111 char = w;code = 119 char = ;code = 32 char = n;code = 110 char = g;code = 103 char = ;code = 32 char = m;code = 109 char = L;code = 76 char = (;code = 40 char = -;code = 45 char = 1;code = 49 char = );code = 41 char = ;code = 32 char = r;code = 114 char = a;code = 97 char = n;code = 110 char = g;code = 103 char = e;code = 101 char = ;code = 32 char = (;code = 40 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 = l;code = 108 char = i;code = 105 char = m;code = 109 char = i;code = 105 char = t;code = 116 char = ;code = 32 char = 1;code = 49 char = .;code = 46 char = 1;code = 49 char = ;code = 32 char = n;code = 110 char = g;code = 103 char = ;code = 32 char = m;code = 109 char = L;code = 76 char = (;code = 40 char = -;code = 45 char = 1;code = 49 char = );code = 41 char = );code = 41 char = ,;code = 44 char = ;code = 32 char = u;code = 117 char = s;code = 115 char = e;code = 101 char = f;code = 102 char = u;code = 117 char = l;code = 108 char = ;code = 32 char = f;code = 102 char = o;code = 111 char = r;code = 114 char = ;code = 32 char = p;code = 112 char = o;code = 111 char = l;code = 108 char = l;code = 108 char = u;code = 117 char = t;code = 116 char = i;code = 105 char = o;code = 111 char = n;code = 110 char = ;code = 32 char = m;code = 109 char = o;code = 111 char = n;code = 110 char = i;code = 105 char = t;code = 116 char = o;code = 111 char = r;code = 114 char = i;code = 105 char = n;code = 110 char = g;code = 103 char = ;code = 32 char = o;code = 111 char = r;code = 114 char = ;code = 32 char = s;code = 115 char = c;code = 99 char = r;code = 114 char = e;code = 101 char = e;code = 101 char = n;code = 110 char = i;code = 105 char = n;code = 110 char = g;code = 103 char = ;code = 32 char = p;code = 112 char = u;code = 117 char = r;code = 114 char = p;code = 112 char = o;code = 111 char = s;code = 115 char = e;code = 101 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 = 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 = ;code = 32 char = w;code = 119 char = a;code = 97 char = s;code = 115 char = ;code = 32 char = t;code = 116 char = e;code = 101 char = s;code = 115 char = t;code = 116 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 = N;code = 78 char = I;code = 73 char = S;code = 83 char = T;code = 84 char = ;code = 32 char = 1;code = 49 char = 6;code = 54 char = 4;code = 52 char = 1;code = 49 char = d;code = 100 char = ;code = 32 char = M;code = 77 char = e;code = 101 char = r;code = 114 char = c;code = 99 char = u;code = 117 char = r;code = 114 char = y;code = 121 char = ;code = 32 char = i;code = 105 char = n;code = 110 char = ;code = 32 char = W;code = 87 char = a;code = 97 char = t;code = 116 char = e;code = 101 char = r;code = 114 char = ;code = 32 char = S;code = 83 char = t;code = 116 char = a;code = 97 char = n;code = 110 char = d;code = 100 char = a;code = 97 char = r;code = 114 char = d;code = 100 char = ;code = 32 char = R;code = 82 char = e;code = 101 char = f;code = 102 char = e;code = 101 char = r;code = 114 char = e;code = 101 char = n;code = 110 char = c;code = 99 char = e;code = 101 char = ;code = 32 char = M;code = 77 char = a;code = 97 char = t;code = 116 char = e;code = 101 char = r;code = 114 char = i;code = 105 char = a;code = 97 char = l;code = 108 char = ;code = 32 char = (;code = 40 char = r;code = 114 char = e;code = 101 char = c;code = 99 char = o;code = 111 char = v;code = 118 char = e;code = 101 char = r;code = 114 char = i;code = 105 char = e;code = 101 char = s;code = 115 char = ;code = 32 char = 9;code = 57 char = 0;code = 48 char = .;code = 46 char = 0;code = 48 char = -;code = 45 char = 1;code = 49 char = 1;code = 49 char = 0;code = 48 char = %;code = 37 char = );code = 41 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 = ;code = 32 char = N;code = 78 char = C;code = 67 char = S;code = 83 char = ;code = 32 char = Z;code = 90 char = C;code = 67 char = ;code = 32 char = 7;code = 55 char = 6;code = 54 char = 3;code = 51 char = 0;code = 48 char = 3;code = 51 char = ;code = 32 char = M;code = 77 char = e;code = 101 char = r;code = 114 char = c;code = 99 char = u;code = 117 char = r;code = 114 char = y;code = 121 char = ;code = 32 char = i;code = 105 char = n;code = 110 char = ;code = 32 char = W;code = 87 char = a;code = 97 char = t;code = 116 char = e;code = 101 char = r;code = 114 char = ;code = 32 char = C;code = 67 char = e;code = 101 char = r;code = 114 char = t;code = 116 char = i;code = 105 char = f;code = 102 char = i;code = 105 char = e;code = 101 char = d;code = 100 char = ;code = 32 char = R;code = 82 char = e;code = 101 char = f;code = 102 char = e;code = 101 char = r;code = 114 char = e;code = 101 char = n;code = 110 char = c;code = 99 char = e;code = 101 char = ;code = 32 char = M;code = 77 char = a;code = 97 char = t;code = 116 char = e;code = 101 char = r;code = 114 char = i;code = 105 char = a;code = 97 char = l;code = 108 char = ;code = 32 char = (;code = 40 char = r;code = 114 char = e;code = 101 char = c;code = 99 char = o;code = 111 char = v;code = 118 char = e;code = 101 char = r;code = 114 char = i;code = 105 char = e;code = 101 char = s;code = 115 char = ;code = 32 char = 8;code = 56 char = 2;code = 50 char = .;code = 46 char = 5;code = 53 char = -;code = 45 char = 9;code = 57 char = 0;code = 48 char = .;code = 46 char = 6;code = 54 char = %;code = 37 char = );code = 41 char = .;code = 46 char = ;code = 32 char = W;code = 87 char = a;code = 97 char = s;code = 115 char = t;code = 116 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 = s;code = 115 char = a;code = 97 char = m;code = 109 char = p;code = 112 char = l;code = 108 char = e;code = 101 char = s;code = 115 char = ;code = 32 char = f;code = 102 char = r;code = 114 char = o;code = 111 char = m;code = 109 char = ;code = 32 char = i;code = 105 char = n;code = 110 char = d;code = 100 char = u;code = 117 char = s;code = 115 char = t;code = 116 char = r;code = 114 char = i;code = 105 char = a;code = 97 char = l;code = 108 char = ;code = 32 char = o;code = 111 char = r;code = 114 char = i;code = 105 char = g;code = 103 char = i;code = 105 char = n;code = 110 char = ;code = 32 char = a;code = 97 char = n;code = 110 char = d;code = 100 char = ;code = 32 char = f;code = 102 char = o;code = 111 char = r;code = 114 char = t;code = 116 char = i;code = 105 char = f;code = 102 char = i;code = 105 char = e;code = 101 char = d;code = 100 char = ;code = 32 char = r;code = 114 char = a;code = 97 char = i;code = 105 char = n;code = 110 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 = a;code = 97 char = m;code = 109 char = p;code = 112 char = l;code = 108 char = e;code = 101 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 = a;code = 97 char = s;code = 115 char = s;code = 115 char = a;code = 97 char = y;code = 121 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 = m;code = 109 char = e;code = 101 char = r;code = 114 char = c;code = 99 char = u;code = 117 char = r;code = 114 char = y;code = 121 char = ;code = 32 char = b;code = 98 char = y;code = 121 char = ;code = 32 char = t;code = 116 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 = ;code = 32 char = a;code = 97 char = n;code = 110 char = d;code = 100 char = ;code = 32 char = b;code = 98 char = y;code = 121 char = ;code = 32 char = a;code = 97 char = ;code = 32 char = r;code = 114 char = e;code = 101 char = f;code = 102 char = e;code = 101 char = r;code = 114 char = e;code = 101 char = n;code = 110 char = c;code = 99 char = e;code = 101 char = ;code = 32 char = I;code = 73 char = C;code = 67 char = P;code = 80 char = -;code = 45 char = M;code = 77 char = S;code = 83 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 = ,;code = 44 char = ;code = 32 char = w;code = 119 char = i;code = 105 char = t;code = 116 char = h;code = 104 char = ;code = 32 char = g;code = 103 char = o;code = 111 char = o;code = 111 char = d;code = 100 char = ;code = 32 char = a;code = 97 char = g;code = 103 char = r;code = 114 char = e;code = 101 char = e;code = 101 char = m;code = 109 char = e;code = 101 char = n;code = 110 char = t;code = 116 char = .;code = 46 char = ;code = 32 char = S;code = 83 char = c;code = 99 char = r;code = 114 char = e;code = 101 char = e;code = 101 char = n;code = 110 char = ;code = 32 char = p;code = 112 char = r;code = 114 char = i;code = 105 char = n;code = 110 char = t;code = 116 char = i;code = 105 char = n;code = 110 char = g;code = 103 char = ;code = 32 char = t;code = 116 char = e;code = 101 char = c;code = 99 char = h;code = 104 char = n;code = 110 char = o;code = 111 char = l;code = 108 char = o;code = 111 char = g;code = 103 char = y;code = 121 char = ;code = 32 char = t;code = 116 char = h;code = 104 char = u;code = 117 char = s;code = 115 char = ;code = 32 char = o;code = 111 char = p;code = 112 char = e;code = 101 char = n;code = 110 char = s;code = 115 char = ;code = 32 char = a;code = 97 char = ;code = 32 char = u;code = 117 char = s;code = 115 char = e;code = 101 char = f;code = 102 char = u;code = 117 char = l;code = 108 char = ;code = 32 char = w;code = 119 char = a;code = 97 char = y;code = 121 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 = c;code = 99 char = o;code = 111 char = n;code = 110 char = s;code = 115 char = t;code = 116 char = r;code = 114 char = u;code = 117 char = c;code = 99 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 = r;code = 114 char = e;code = 101 char = l;code = 108 char = i;code = 105 char = a;code = 97 char = b;code = 98 char = l;code = 108 char = e;code = 101 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 = 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 = s;code = 115 char = e;code = 101 char = n;code = 110 char = s;code = 115 char = o;code = 111 char = r;code = 114 char = s;code = 115 char = ;code = 32 char = f;code = 102 char = o;code = 111 char = r;code = 114 char = ;code = 32 char = d;code = 100 char = e;code = 101 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 = l;code = 108 char = i;code = 105 char = z;code = 122 char = e;code = 101 char = d;code = 100 char = ;code = 32 char = o;code = 111 char = r;code = 114 char = ;code = 32 char = e;code = 101 char = v;code = 118 char = e;code = 101 char = n;code = 110 char = ;code = 32 char = f;code = 102 char = i;code = 105 char = e;code = 101 char = l;code = 108 char = d;code = 100 char = ;code = 32 char = H;code = 72 char = g;code = 103 char = (;code = 40 char = I;code = 73 char = I;code = 73 char = );code = 41 char = ;code = 32 char = t;code = 116 char = e;code = 101 char = s;code = 115 char = t;code = 116 char = i;code = 105 char = n;code = 110 char = g;code = 103 char = .;code = 46 char = <;code = 60 char = b;code = 98 char = r;code = 114 char = /;code = 47 char = >;code = 62 result sql = The applicability of commercial screen-printed gold electrodes (SPGEs) for the determination of Hg(II) in ambient water samples by square wave anodic stripping voltammetry has been demonstrated. Electrode conditioning procedures, chemical and instrumental variables have been optimized to develop a reliable method capable of measuring dissolved mercury in the low ng mL(-1) range (detection limit 1.1 ng mL(-1)), useful for pollution monitoring or screening purposes. The proposed method was tested with the NIST 1641d Mercury in Water Standard Reference Material (recoveries 90.0-110%) and the NCS ZC 76303 Mercury in Water Certified Reference Material (recoveries 82.5-90.6%). Waste water samples from industrial origin and fortified rain water samples were assayed for mercury by the proposed method and by a reference ICP-MS method, with good agreement. Screen printing technology thus opens a useful way for the construction of reliable electrochemical sensors for decentralized or even field Hg(II) testing.
Publication: Anal. Chim. Acta 2011 Mar 9 ;689(1)::60-4. :doi: 10.1016/j.aca.2011.01.042.
Publication Date: 2011 Mar 9
Study Author(s): Bernalte, E;Marín Sánchez, C;Pinilla Gil, E;
Institution: Department of Analytical Chemistry, University of Extremadura, Av. de Elvas, s/n, E-06071 Badajoz, Spain.
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The applicability of commercial screen-printed gold electrodes (SPGEs) for the determination of Hg(II) in ambient water samples by square wave anodic stripping voltammetry has been demonstrated. Electrode conditioning procedures, chemical and instrumental variables have been optimized to develop a reliable method capable of measuring dissolved mercury in the low ng mL(-1) range (detection limit 1.1 ng mL(-1)), useful for pollution monitoring or screening purposes. The proposed method was tested with the NIST 1641d Mercury in Water Standard Reference Material (recoveries 90.0-110%) and the NCS ZC 76303 Mercury in Water Certified Reference Material (recoveries 82.5-90.6%). Waste water samples from industrial origin and fortified rain water samples were assayed for mercury by the proposed method and by a reference ICP-MS method, with good agreement. Screen printing technology thus opens a useful way for the construction of reliable electrochemical sensors for decentralized or even field Hg(II) testing.
PMID: 21338757