char = M;code = 77 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 = p;code = 112 char = y;code = 121 char = r;code = 114 char = e;code = 101 char = t;code = 116 char = h;code = 104 char = r;code = 114 char = o;code = 111 char = i;code = 105 char = d;code = 100 char = s;code = 115 char = ;code = 32 char = i;code = 105 char = n;code = 110 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 = ;code = 32 char = p;code = 112 char = o;code = 111 char = r;code = 114 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 = u;code = 117 char = s;code = 115 char = i;code = 105 char = n;code = 110 char = g;code = 103 char = ;code = 32 char = m;code = 109 char = a;code = 97 char = t;code = 116 char = r;code = 114 char = i;code = 105 char = x;code = 120 char = -;code = 45 char = s;code = 115 char = o;code = 111 char = l;code = 108 char = i;code = 105 char = d;code = 100 char = ;code = 32 char = p;code = 112 char = h;code = 104 char = a;code = 97 char = s;code = 115 char = e;code = 101 char = ;code = 32 char = m;code = 109 char = i;code = 105 char = c;code = 99 char = r;code = 114 char = o;code = 111 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 = 46 result sql = Measuring pyrethroids in sediment pore water using matrix-solid phase microextraction.
Measuring pyrethroids in sediment pore water using matrix-solid phase microextraction.char = P;code = 80 char = y;code = 121 char = r;code = 114 char = e;code = 101 char = t;code = 116 char = h;code = 104 char = r;code = 114 char = o;code = 111 char = i;code = 105 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 = h;code = 104 char = y;code = 121 char = d;code = 100 char = r;code = 114 char = o;code = 111 char = p;code = 112 char = h;code = 104 char = o;code = 111 char = b;code = 98 char = i;code = 105 char = c;code = 99 char = ;code = 32 char = i;code = 105 char = n;code = 110 char = s;code = 115 char = e;code = 101 char = c;code = 99 char = t;code = 116 char = i;code = 105 char = c;code = 99 char = i;code = 105 char = d;code = 100 char = e;code = 101 char = s;code = 115 char = ;code = 32 char = c;code = 99 char = o;code = 111 char = m;code = 109 char = m;code = 109 char = o;code = 111 char = n;code = 110 char = l;code = 108 char = y;code = 121 char = ;code = 32 char = u;code = 117 char = s;code = 115 char = e;code = 101 char = d;code = 100 char = ;code = 32 char = i;code = 105 char = n;code = 110 char = ;code = 32 char = b;code = 98 char = o;code = 111 char = t;code = 116 char = h;code = 104 char = ;code = 32 char = a;code = 97 char = g;code = 103 char = r;code = 114 char = i;code = 105 char = c;code = 99 char = u;code = 117 char = l;code = 108 char = t;code = 116 char = u;code = 117 char = r;code = 114 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 = u;code = 117 char = r;code = 114 char = b;code = 98 char = a;code = 97 char = n;code = 110 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 = s;code = 115 char = .;code = 46 char = ;code = 32 char = T;code = 84 char = h;code = 104 char = e;code = 101 char = i;code = 105 char = r;code = 114 char = ;code = 32 char = h;code = 104 char = i;code = 105 char = g;code = 103 char = h;code = 104 char = ;code = 32 char = t;code = 116 char = o;code = 111 char = x;code = 120 char = i;code = 105 char = c;code = 99 char = i;code = 105 char = t;code = 116 char = y;code = 121 char = ;code = 32 char = t;code = 116 char = o;code = 111 char = ;code = 32 char = a;code = 97 char = q;code = 113 char = u;code = 117 char = a;code = 97 char = t;code = 116 char = i;code = 105 char = c;code = 99 char = ;code = 32 char = o;code = 111 char = r;code = 114 char = g;code = 103 char = a;code = 97 char = n;code = 110 char = i;code = 105 char = s;code = 115 char = m;code = 109 char = s;code = 115 char = ,;code = 44 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 = i;code = 105 char = n;code = 110 char = g;code = 103 char = ;code = 32 char = b;code = 98 char = e;code = 101 char = n;code = 110 char = t;code = 116 char = h;code = 104 char = i;code = 105 char = c;code = 99 char = ;code = 32 char = i;code = 105 char = n;code = 110 char = v;code = 118 char = e;code = 101 char = r;code = 114 char = t;code = 116 char = e;code = 101 char = b;code = 98 char = r;code = 114 char = a;code = 97 char = t;code = 116 char = e;code = 101 char = s;code = 115 char = ,;code = 44 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 = c;code = 99 char = t;code = 116 char = i;code = 105 char = o;code = 111 char = n;code = 110 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 = 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 = ;code = 32 char = a;code = 97 char = t;code = 116 char = ;code = 32 char = m;code = 109 char = a;code = 97 char = n;code = 110 char = y;code = 121 char = ;code = 32 char = l;code = 108 char = o;code = 111 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 = s;code = 115 char = ;code = 32 char = i;code = 105 char = n;code = 110 char = ;code = 32 char = C;code = 67 char = a;code = 97 char = l;code = 108 char = i;code = 105 char = f;code = 102 char = o;code = 111 char = r;code = 114 char = n;code = 110 char = i;code = 105 char = a;code = 97 char = ,;code = 44 char = ;code = 32 char = U;code = 85 char = .;code = 46 char = S;code = 83 char = .;code = 46 char = A;code = 65 char = .;code = 46 char = ,;code = 44 char = ;code = 32 char = h;code = 104 char = a;code = 97 char = v;code = 118 char = e;code = 101 char = ;code = 32 char = s;code = 115 char = p;code = 112 char = a;code = 97 char = w;code = 119 char = n;code = 110 char = e;code = 101 char = d;code = 100 char = ;code = 32 char = i;code = 105 char = n;code = 110 char = t;code = 116 char = e;code = 101 char = r;code = 114 char = e;code = 101 char = s;code = 115 char = t;code = 116 char = ;code = 32 char = i;code = 105 char = n;code = 110 char = ;code = 32 char = u;code = 117 char = n;code = 110 char = d;code = 100 char = e;code = 101 char = r;code = 114 char = s;code = 115 char = t;code = 116 char = a;code = 97 char = n;code = 110 char = d;code = 100 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 = i;code = 105 char = r;code = 114 char = ;code = 32 char = b;code = 98 char = i;code = 105 char = o;code = 111 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 = i;code = 105 char = l;code = 108 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 = b;code = 98 char = e;code = 101 char = d;code = 100 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 = A;code = 65 char = ;code = 32 char = r;code = 114 char = e;code = 101 char = c;code = 99 char = e;code = 101 char = n;code = 110 char = t;code = 116 char = ;code = 32 char = s;code = 115 char = t;code = 116 char = u;code = 117 char = d;code = 100 char = y;code = 121 char = ;code = 32 char = s;code = 115 char = h;code = 104 char = o;code = 111 char = w;code = 119 char = e;code = 101 char = d;code = 100 char = ;code = 32 char = g;code = 103 char = o;code = 111 char = o;code = 111 char = d;code = 100 char = ;code = 32 char = c;code = 99 char = o;code = 111 char = r;code = 114 char = r;code = 114 char = e;code = 101 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 = b;code = 98 char = e;code = 101 char = t;code = 116 char = w;code = 119 char = e;code = 101 char = e;code = 101 char = n;code = 110 char = ;code = 32 char = u;code = 117 char = p;code = 112 char = t;code = 116 char = a;code = 97 char = k;code = 107 char = e;code = 101 char = ;code = 32 char = o;code = 111 char = f;code = 102 char = ;code = 32 char = 1;code = 49 char = 4;code = 52 char = C;code = 67 char = -;code = 45 char = p;code = 112 char = e;code = 101 char = r;code = 114 char = m;code = 109 char = e;code = 101 char = t;code = 116 char = h;code = 104 char = r;code = 114 char = i;code = 105 char = n;code = 110 char = ;code = 32 char = i;code = 105 char = n;code = 110 char = ;code = 32 char = C;code = 67 char = h;code = 104 char = i;code = 105 char = r;code = 114 char = o;code = 111 char = n;code = 110 char = o;code = 111 char = m;code = 109 char = u;code = 117 char = s;code = 115 char = ;code = 32 char = t;code = 116 char = e;code = 101 char = n;code = 110 char = t;code = 116 char = a;code = 97 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 = s;code = 115 char = o;code = 111 char = l;code = 108 char = i;code = 105 char = d;code = 100 char = -;code = 45 char = p;code = 112 char = h;code = 104 char = a;code = 97 char = s;code = 115 char = e;code = 101 char = ;code = 32 char = m;code = 109 char = i;code = 105 char = c;code = 99 char = r;code = 114 char = o;code = 111 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 = S;code = 83 char = P;code = 80 char = M;code = 77 char = E;code = 69 char = );code = 41 char = ;code = 32 char = f;code = 102 char = i;code = 105 char = b;code = 98 char = e;code = 101 char = r;code = 114 char = s;code = 115 char = ;code = 32 char = i;code = 105 char = n;code = 110 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 = e;code = 101 char = s;code = 115 char = e;code = 101 char = n;code = 110 char = t;code = 116 char = ;code = 32 char = s;code = 115 char = t;code = 116 char = u;code = 117 char = d;code = 100 char = y;code = 121 char = ;code = 32 char = w;code = 119 char = a;code = 97 char = s;code = 115 char = ;code = 32 char = d;code = 100 char = i;code = 105 char = r;code = 114 char = e;code = 101 char = c;code = 99 char = t;code = 116 char = e;code = 101 char = d;code = 100 char = ;code = 32 char = a;code = 97 char = t;code = 116 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 = v;code = 118 char = e;code = 101 char = l;code = 108 char = o;code = 111 char = p;code = 112 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 = a;code = 97 char = n;code = 110 char = ;code = 32 char = S;code = 83 char = P;code = 80 char = M;code = 77 char = E;code = 69 char = ;code = 32 char = t;code = 116 char = e;code = 101 char = c;code = 99 char = h;code = 104 char = n;code = 110 char = i;code = 105 char = q;code = 113 char = u;code = 117 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 = l;code = 108 char = e;code = 101 char = ;code = 32 char = t;code = 116 char = o;code = 111 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 = 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 = o;code = 111 char = f;code = 102 char = ;code = 32 char = n;code = 110 char = o;code = 111 char = n;code = 110 char = l;code = 108 char = a;code = 97 char = b;code = 98 char = e;code = 101 char = l;code = 108 char = e;code = 101 char = d;code = 100 char = ;code = 32 char = p;code = 112 char = y;code = 121 char = r;code = 114 char = e;code = 101 char = t;code = 116 char = h;code = 104 char = r;code = 114 char = o;code = 111 char = i;code = 105 char = d;code = 100 char = s;code = 115 char = ;code = 32 char = i;code = 105 char = n;code = 110 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 = .;code = 46 char = ;code = 32 char = D;code = 68 char = i;code = 105 char = s;code = 115 char = p;code = 112 char = o;code = 111 char = s;code = 115 char = a;code = 97 char = b;code = 98 char = l;code = 108 char = e;code = 101 char = ;code = 32 char = p;code = 112 char = o;code = 111 char = l;code = 108 char = y;code = 121 char = d;code = 100 char = i;code = 105 char = m;code = 109 char = e;code = 101 char = t;code = 116 char = h;code = 104 char = y;code = 121 char = l;code = 108 char = s;code = 115 char = i;code = 105 char = l;code = 108 char = o;code = 111 char = x;code = 120 char = a;code = 97 char = n;code = 110 char = e;code = 101 char = ;code = 32 char = f;code = 102 char = i;code = 105 char = b;code = 98 char = e;code = 101 char = r;code = 114 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 = u;code = 117 char = s;code = 115 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 = t;code = 116 char = e;code = 101 char = c;code = 99 char = t;code = 116 char = ;code = 32 char = f;code = 102 char = r;code = 114 char = e;code = 101 char = e;code = 101 char = l;code = 108 char = y;code = 121 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 = p;code = 112 char = o;code = 111 char = r;code = 114 char = e;code = 101 char = -;code = 45 char = w;code = 119 char = a;code = 97 char = t;code = 116 char = e;code = 101 char = r;code = 114 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 = o;code = 111 char = f;code = 102 char = ;code = 32 char = b;code = 98 char = i;code = 105 char = f;code = 102 char = e;code = 101 char = n;code = 110 char = t;code = 116 char = h;code = 104 char = r;code = 114 char = i;code = 105 char = n;code = 110 char = ,;code = 44 char = ;code = 32 char = f;code = 102 char = e;code = 101 char = n;code = 110 char = p;code = 112 char = r;code = 114 char = o;code = 111 char = p;code = 112 char = a;code = 97 char = t;code = 116 char = h;code = 104 char = r;code = 114 char = i;code = 105 char = n;code = 110 char = ,;code = 44 char = ;code = 32 char = c;code = 99 char = i;code = 105 char = s;code = 115 char = -;code = 45 char = p;code = 112 char = e;code = 101 char = r;code = 114 char = m;code = 109 char = e;code = 101 char = t;code = 116 char = h;code = 104 char = r;code = 114 char = i;code = 105 char = n;code = 110 char = ,;code = 44 char = ;code = 32 char = t;code = 116 char = r;code = 114 char = a;code = 97 char = n;code = 110 char = s;code = 115 char = -;code = 45 char = p;code = 112 char = e;code = 101 char = r;code = 114 char = m;code = 109 char = e;code = 101 char = t;code = 116 char = h;code = 104 char = r;code = 114 char = i;code = 105 char = n;code = 110 char = ,;code = 44 char = ;code = 32 char = c;code = 99 char = y;code = 121 char = f;code = 102 char = l;code = 108 char = u;code = 117 char = t;code = 116 char = h;code = 104 char = r;code = 114 char = i;code = 105 char = n;code = 110 char = ,;code = 44 char = ;code = 32 char = c;code = 99 char = y;code = 121 char = p;code = 112 char = e;code = 101 char = r;code = 114 char = m;code = 109 char = e;code = 101 char = t;code = 116 char = h;code = 104 char = r;code = 114 char = i;code = 105 char = n;code = 110 char = ,;code = 44 char = ;code = 32 char = a;code = 97 char = n;code = 110 char = d;code = 100 char = ;code = 32 char = e;code = 101 char = s;code = 115 char = f;code = 102 char = e;code = 101 char = n;code = 110 char = v;code = 118 char = a;code = 97 char = l;code = 108 char = e;code = 101 char = r;code = 114 char = a;code = 97 char = t;code = 116 char = e;code = 101 char = ;code = 32 char = u;code = 117 char = n;code = 110 char = d;code = 100 char = e;code = 101 char = r;code = 114 char = ;code = 32 char = a;code = 97 char = g;code = 103 char = i;code = 105 char = t;code = 116 char = a;code = 97 char = t;code = 116 char = e;code = 101 char = d;code = 100 char = ;code = 32 char = a;code = 97 char = n;code = 110 char = d;code = 100 char = ;code = 32 char = s;code = 115 char = t;code = 116 char = a;code = 97 char = t;code = 116 char = i;code = 105 char = c;code = 99 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 = s;code = 115 char = .;code = 46 char = ;code = 32 char = P;code = 80 char = a;code = 97 char = r;code = 114 char = t;code = 116 char = i;code = 105 char = t;code = 116 char = i;code = 105 char = o;code = 111 char = n;code = 110 char = ;code = 32 char = e;code = 101 char = q;code = 113 char = u;code = 117 char = i;code = 105 char = l;code = 108 char = i;code = 105 char = b;code = 98 char = r;code = 114 char = i;code = 105 char = u;code = 117 char = m;code = 109 char = ;code = 32 char = b;code = 98 char = e;code = 101 char = t;code = 116 char = w;code = 119 char = e;code = 101 char = e;code = 101 char = n;code = 110 char = ;code = 32 char = f;code = 102 char = i;code = 105 char = b;code = 98 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 = 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 = ;code = 32 char = w;code = 119 char = a;code = 97 char = s;code = 115 char = ;code = 32 char = r;code = 114 char = e;code = 101 char = a;code = 97 char = c;code = 99 char = h;code = 104 char = e;code = 101 char = d;code = 100 char = ;code = 32 char = i;code = 105 char = n;code = 110 char = ;code = 32 char = <;code = 60 char = 5;code = 53 char = ;code = 32 char = d;code = 100 char = ;code = 32 char = w;code = 119 char = h;code = 104 char = e;code = 101 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 = 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 = g;code = 103 char = i;code = 105 char = t;code = 116 char = a;code = 97 char = t;code = 116 char = e;code = 101 char = d;code = 100 char = ;code = 32 char = o;code = 111 char = n;code = 110 char = ;code = 32 char = a;code = 97 char = ;code = 32 char = s;code = 115 char = h;code = 104 char = a;code = 97 char = k;code = 107 char = e;code = 101 char = r;code = 114 char = ;code = 32 char = a;code = 97 char = t;code = 116 char = ;code = 32 char = l;code = 108 char = o;code = 111 char = w;code = 119 char = ;code = 32 char = s;code = 115 char = p;code = 112 char = e;code = 101 char = e;code = 101 char = d;code = 100 char = ,;code = 44 char = ;code = 32 char = w;code = 119 char = h;code = 104 char = i;code = 105 char = l;code = 108 char = e;code = 101 char = ;code = 32 char = m;code = 109 char = u;code = 117 char = c;code = 99 char = h;code = 104 char = ;code = 32 char = l;code = 108 char = o;code = 111 char = n;code = 110 char = g;code = 103 char = e;code = 101 char = r;code = 114 char = ;code = 32 char = t;code = 116 char = i;code = 105 char = m;code = 109 char = e;code = 101 char = s;code = 115 char = ;code = 32 char = (;code = 40 char = >;code = 62 char = 2;code = 50 char = 3;code = 51 char = ;code = 32 char = d;code = 100 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 = n;code = 110 char = e;code = 101 char = e;code = 101 char = d;code = 100 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 = o;code = 111 char = u;code = 117 char = t;code = 116 char = ;code = 32 char = a;code = 97 char = g;code = 103 char = i;code = 105 char = t;code = 116 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 = P;code = 80 char = o;code = 111 char = l;code = 108 char = y;code = 121 char = d;code = 100 char = i;code = 105 char = m;code = 109 char = e;code = 101 char = t;code = 116 char = h;code = 104 char = y;code = 121 char = l;code = 108 char = s;code = 115 char = i;code = 105 char = l;code = 108 char = o;code = 111 char = x;code = 120 char = a;code = 97 char = n;code = 110 char = e;code = 101 char = ;code = 32 char = t;code = 116 char = o;code = 111 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 = p;code = 112 char = a;code = 97 char = r;code = 114 char = t;code = 116 char = i;code = 105 char = t;code = 116 char = i;code = 105 char = o;code = 111 char = n;code = 110 char = ;code = 32 char = r;code = 114 char = a;code = 97 char = t;code = 116 char = i;code = 105 char = o;code = 111 char = s;code = 115 char = ;code = 32 char = (;code = 40 char = K;code = 75 char = (;code = 40 char = P;code = 80 char = D;code = 68 char = M;code = 77 char = S;code = 83 char = );code = 41 char = );code = 41 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 = s;code = 115 char = e;code = 101 char = v;code = 118 char = e;code = 101 char = n;code = 110 char = ;code = 32 char = p;code = 112 char = y;code = 121 char = r;code = 114 char = e;code = 101 char = t;code = 116 char = h;code = 104 char = r;code = 114 char = o;code = 111 char = i;code = 105 char = d;code = 100 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 = 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 = 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 = e;code = 101 char = l;code = 108 char = y;code = 121 char = ;code = 32 char = a;code = 97 char = n;code = 110 char = d;code = 100 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 = 2;code = 50 char = .;code = 46 char = 8;code = 56 char = 3;code = 51 char = ;code = 32 char = x;code = 120 char = ;code = 32 char = 1;code = 49 char = 0;code = 48 char = (;code = 40 char = 5;code = 53 char = );code = 41 char = ;code = 32 char = t;code = 116 char = o;code = 111 char = ;code = 32 char = 1;code = 49 char = .;code = 46 char = 8;code = 56 char = 9;code = 57 char = ;code = 32 char = x;code = 120 char = ;code = 32 char = 1;code = 49 char = 0;code = 48 char = (;code = 40 char = 6;code = 54 char = );code = 41 char = .;code = 46 char = ;code = 32 char = W;code = 87 char = h;code = 104 char = e;code = 101 char = n;code = 110 char = ;code = 32 char = a;code = 97 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 = f;code = 102 char = i;code = 105 char = e;code = 101 char = l;code = 108 char = d;code = 100 char = -;code = 45 char = c;code = 99 char = o;code = 111 char = n;code = 110 char = t;code = 116 char = a;code = 97 char = m;code = 109 char = i;code = 105 char = n;code = 110 char = a;code = 97 char = t;code = 116 char = e;code = 101 char = d;code = 100 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 = 44 char = ;code = 32 char = a;code = 97 char = g;code = 103 char = i;code = 105 char = t;code = 116 char = a;code = 97 char = t;code = 116 char = e;code = 101 char = d;code = 100 char = ;code = 32 char = m;code = 109 char = a;code = 97 char = t;code = 116 char = r;code = 114 char = i;code = 105 char = x;code = 120 char = -;code = 45 char = S;code = 83 char = P;code = 80 char = M;code = 77 char = E;code = 69 char = ;code = 32 char = w;code = 119 char = a;code = 97 char = s;code = 115 char = ;code = 32 char = a;code = 97 char = b;code = 98 char = l;code = 108 char = e;code = 101 char = ;code = 32 char = t;code = 116 char = o;code = 111 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 = ;code = 32 char = p;code = 112 char = o;code = 111 char = r;code = 114 char = e;code = 101 char = -;code = 45 char = w;code = 119 char = a;code = 97 char = t;code = 116 char = e;code = 101 char = r;code = 114 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 = a;code = 97 char = s;code = 115 char = ;code = 32 char = l;code = 108 char = o;code = 111 char = w;code = 119 char = ;code = 32 char = a;code = 97 char = s;code = 115 char = ;code = 32 char = 0;code = 48 char = .;code = 46 char = 1;code = 49 char = ;code = 32 char = n;code = 110 char = g;code = 103 char = /;code = 47 char = L;code = 76 char = .;code = 46 char = ;code = 32 char = T;code = 84 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 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 = 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 = p;code = 112 char = r;code = 114 char = e;code = 101 char = s;code = 115 char = e;code = 101 char = n;code = 110 char = t;code = 116 char = ;code = 32 char = s;code = 115 char = t;code = 116 char = u;code = 117 char = d;code = 100 char = y;code = 121 char = ;code = 32 char = m;code = 109 char = a;code = 97 char = y;code = 121 char = ;code = 32 char = b;code = 98 char = e;code = 101 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 = w;code = 119 char = i;code = 105 char = t;code = 116 char = h;code = 104 char = ;code = 32 char = b;code = 98 char = i;code = 105 char = o;code = 111 char = a;code = 97 char = s;code = 115 char = s;code = 115 char = a;code = 97 char = y;code = 121 char = s;code = 115 char = ;code = 32 char = t;code = 116 char = o;code = 111 char = ;code = 32 char = g;code = 103 char = a;code = 97 char = i;code = 105 char = n;code = 110 char = ;code = 32 char = m;code = 109 char = e;code = 101 char = c;code = 99 char = h;code = 104 char = a;code = 97 char = n;code = 110 char = i;code = 105 char = s;code = 115 char = t;code = 116 char = i;code = 105 char = c;code = 99 char = ;code = 32 char = u;code = 117 char = n;code = 110 char = d;code = 100 char = e;code = 101 char = r;code = 114 char = s;code = 115 char = t;code = 116 char = a;code = 97 char = n;code = 110 char = d;code = 100 char = i;code = 105 char = n;code = 110 char = g;code = 103 char = ;code = 32 char = o;code = 111 char = f;code = 102 char = ;code = 32 char = f;code = 102 char = a;code = 97 char = c;code = 99 char = t;code = 116 char = o;code = 111 char = r;code = 114 char = s;code = 115 char = ;code = 32 char = a;code = 97 char = f;code = 102 char = f;code = 102 char = e;code = 101 char = c;code = 99 char = t;code = 116 char = i;code = 105 char = n;code = 110 char = g;code = 103 char = ;code = 32 char = p;code = 112 char = y;code = 121 char = r;code = 114 char = e;code = 101 char = t;code = 116 char = h;code = 104 char = r;code = 114 char = o;code = 111 char = i;code = 105 char = d;code = 100 char = ;code = 32 char = t;code = 116 char = o;code = 111 char = x;code = 120 char = i;code = 105 char = c;code = 99 char = i;code = 105 char = t;code = 116 char = i;code = 105 char = e;code = 101 char = s;code = 115 char = ,;code = 44 char = ;code = 32 char = a;code = 97 char = n;code = 110 char = d;code = 100 char = ;code = 32 char = a;code = 97 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 = f;code = 102 char = i;code = 105 char = e;code = 101 char = l;code = 108 char = d;code = 100 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 = t;code = 116 char = o;code = 111 char = ;code = 32 char = b;code = 98 char = e;code = 101 char = t;code = 116 char = t;code = 116 char = e;code = 101 char = r;code = 114 char = ;code = 32 char = p;code = 112 char = r;code = 114 char = e;code = 101 char = d;code = 100 char = i;code = 105 char = c;code = 99 char = t;code = 116 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 = ;code = 32 char = t;code = 116 char = o;code = 111 char = x;code = 120 char = i;code = 105 char = c;code = 99 char = i;code = 105 char = t;code = 116 char = i;code = 105 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 = p;code = 112 char = y;code = 121 char = r;code = 114 char = e;code = 101 char = t;code = 116 char = h;code = 104 char = r;code = 114 char = o;code = 111 char = i;code = 105 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 = 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 = 46 char = <;code = 60 char = b;code = 98 char = r;code = 114 char = /;code = 47 char = >;code = 62 result sql = Pyrethroids are hydrophobic insecticides commonly used in both agricultural and urban environments. Their high toxicity to aquatic organisms, including benthic invertebrates, and detection in the sediment at many locations in California, U.S.A., have spawned interest in understanding their bioavailability in bed sediments. A recent study showed good correlation between uptake of 14C-permethrin in Chironomus tentans and solid-phase microextraction (SPME) fibers in sediments. The present study was directed at the development of an SPME technique applicable to trace levels of nonlabeled pyrethroids in sediment. Disposable polydimethylsiloxane fibers were used to detect freely dissolved pore-water concentrations of bifenthrin, fenpropathrin, cis-permethrin, trans-permethrin, cyfluthrin, cypermethrin, and esfenvalerate under agitated and static conditions. Partition equilibrium between fiber and sediment was reached in <5 d when the samples were agitated on a shaker at low speed, while much longer times (>23 d) were needed without agitation. Polydimethylsiloxane to water partition ratios (K(PDMS)) of the seven pyrethroids were measured separately and ranged from 2.83 x 10(5) to 1.89 x 10(6). When applied to field-contaminated sediments, agitated matrix-SPME was able to detect pore-water concentrations as low as 0.1 ng/L. The method developed in the present study may be coupled with bioassays to gain mechanistic understanding of factors affecting pyrethroid toxicities, and applied to field samples to better predict sediment toxicities from pyrethroid contamination.
Publication: Environ. Toxicol. Chem. 2009 Jan ;28(1)::36-43. :doi: 10.1897/08-209.1.
Publication Date: 2009 Jan
Study Author(s): Hunter, Wesley;Yang, Yu;Reichenberg, Fredrik;Mayer, Philipp;Gan, Jianying;
Institution: Department of Environmental Sciences, University of California, 2258 Geology, Riverside, California 92521, USA.
[email protected]
Shortcut link to this study:
Pyrethroids are hydrophobic insecticides commonly used in both agricultural and urban environments. Their high toxicity to aquatic organisms, including benthic invertebrates, and detection in the sediment at many locations in California, U.S.A., have spawned interest in understanding their bioavailability in bed sediments. A recent study showed good correlation between uptake of 14C-permethrin in Chironomus tentans and solid-phase microextraction (SPME) fibers in sediments. The present study was directed at the development of an SPME technique applicable to trace levels of nonlabeled pyrethroids in sediment. Disposable polydimethylsiloxane fibers were used to detect freely dissolved pore-water concentrations of bifenthrin, fenpropathrin, cis-permethrin, trans-permethrin, cyfluthrin, cypermethrin, and esfenvalerate under agitated and static conditions. Partition equilibrium between fiber and sediment was reached in <5 d when the samples were agitated on a shaker at low speed, while much longer times (>23 d) were needed without agitation. Polydimethylsiloxane to water partition ratios (K(PDMS)) of the seven pyrethroids were measured separately and ranged from 2.83 x 10(5) to 1.89 x 10(6). When applied to field-contaminated sediments, agitated matrix-SPME was able to detect pore-water concentrations as low as 0.1 ng/L. The method developed in the present study may be coupled with bioassays to gain mechanistic understanding of factors affecting pyrethroid toxicities, and applied to field samples to better predict sediment toxicities from pyrethroid contamination.
PMID: 18712946