char = H;code = 72 char = e;code = 101 char = a;code = 97 char = d;code = 100 char = s;code = 115 char = p;code = 112 char = a;code = 97 char = c;code = 99 char = e;code = 101 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 = o;code = 111 char = f;code = 102 char = ;code = 32 char = c;code = 99 char = a;code = 97 char = n;code = 110 char = n;code = 110 char = a;code = 97 char = b;code = 98 char = i;code = 105 char = n;code = 110 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 = h;code = 104 char = u;code = 117 char = m;code = 109 char = a;code = 97 char = n;code = 110 char = ;code = 32 char = h;code = 104 char = e;code = 101 char = a;code = 97 char = d;code = 100 char = ;code = 32 char = h;code = 104 char = a;code = 97 char = i;code = 105 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 = 46 result sql = Headspace solid-phase microextraction of cannabinoids in human head hair samples.
Headspace solid-phase microextraction of cannabinoids in human head hair samples.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 = 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 = 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 = a;code = 97 char = n;code = 110 char = d;code = 100 char = ;code = 32 char = v;code = 118 char = a;code = 97 char = l;code = 108 char = i;code = 105 char = d;code = 100 char = a;code = 97 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 = a;code = 97 char = i;code = 105 char = m;code = 109 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 = c;code = 99 char = a;code = 97 char = n;code = 110 char = n;code = 110 char = a;code = 97 char = b;code = 98 char = i;code = 105 char = n;code = 110 char = o;code = 111 char = i;code = 105 char = d;code = 100 char = s;code = 115 char = ;code = 32 char = (;code = 40 char = c;code = 99 char = a;code = 97 char = n;code = 110 char = n;code = 110 char = a;code = 97 char = b;code = 98 char = i;code = 105 char = d;code = 100 char = i;code = 105 char = o;code = 111 char = l;code = 108 char = ,;code = 44 char = ;code = 32 char = c;code = 99 char = a;code = 97 char = n;code = 110 char = n;code = 110 char = a;code = 97 char = b;code = 98 char = i;code = 105 char = n;code = 110 char = o;code = 111 char = l;code = 108 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 = l;code = 108 char = t;code = 116 char = a;code = 97 char = -;code = 45 char = 9;code = 57 char = -;code = 45 char = t;code = 116 char = e;code = 101 char = t;code = 116 char = r;code = 114 char = a;code = 97 char = h;code = 104 char = y;code = 121 char = d;code = 100 char = r;code = 114 char = o;code = 111 char = c;code = 99 char = a;code = 97 char = n;code = 110 char = n;code = 110 char = a;code = 97 char = b;code = 98 char = i;code = 105 char = n;code = 110 char = o;code = 111 char = l;code = 108 char = );code = 41 char = ;code = 32 char = i;code = 105 char = n;code = 110 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 = h;code = 104 char = e;code = 101 char = a;code = 97 char = d;code = 100 char = ;code = 32 char = h;code = 104 char = a;code = 97 char = i;code = 105 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 = 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 = w;code = 119 char = a;code = 97 char = s;code = 115 char = ;code = 32 char = b;code = 98 char = a;code = 97 char = s;code = 115 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 = n;code = 110 char = ;code = 32 char = i;code = 105 char = n;code = 110 char = i;code = 105 char = t;code = 116 char = i;code = 105 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 = o;code = 111 char = f;code = 102 char = ;code = 32 char = e;code = 101 char = x;code = 120 char = t;code = 116 char = e;code = 101 char = r;code = 114 char = n;code = 110 char = a;code = 97 char = l;code = 108 char = ;code = 32 char = d;code = 100 char = e;code = 101 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 = 32 char = o;code = 111 char = f;code = 102 char = ;code = 32 char = h;code = 104 char = a;code = 97 char = i;code = 105 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 = (;code = 40 char = 1;code = 49 char = 0;code = 48 char = ;code = 32 char = m;code = 109 char = g;code = 103 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 = p;code = 112 char = e;code = 101 char = t;code = 116 char = r;code = 114 char = o;code = 111 char = l;code = 108 char = e;code = 101 char = u;code = 117 char = m;code = 109 char = ;code = 32 char = e;code = 101 char = t;code = 116 char = h;code = 104 char = e;code = 101 char = r;code = 114 char = ,;code = 44 char = ;code = 32 char = f;code = 102 char = o;code = 111 char = l;code = 108 char = l;code = 108 char = o;code = 111 char = w;code = 119 char = e;code = 101 char = d;code = 100 char = ;code = 32 char = b;code = 98 char = y;code = 121 char = ;code = 32 char = a;code = 97 char = l;code = 108 char = k;code = 107 char = a;code = 97 char = l;code = 108 char = i;code = 105 char = n;code = 110 char = e;code = 101 char = ;code = 32 char = d;code = 100 char = i;code = 105 char = g;code = 103 char = e;code = 101 char = s;code = 115 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 = f;code = 102 char = u;code = 117 char = r;code = 114 char = t;code = 116 char = h;code = 104 char = e;code = 101 char = r;code = 114 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 = o;code = 111 char = f;code = 102 char = ;code = 32 char = c;code = 99 char = a;code = 97 char = n;code = 110 char = n;code = 110 char = a;code = 97 char = b;code = 98 char = i;code = 105 char = n;code = 110 char = o;code = 111 char = i;code = 105 char = d;code = 100 char = s;code = 115 char = ;code = 32 char = b;code = 98 char = y;code = 121 char = ;code = 32 char = m;code = 109 char = e;code = 101 char = a;code = 97 char = n;code = 110 char = s;code = 115 char = ;code = 32 char = o;code = 111 char = f;code = 102 char = ;code = 32 char = a;code = 97 char = ;code = 32 char = h;code = 104 char = e;code = 101 char = a;code = 97 char = d;code = 100 char = s;code = 115 char = p;code = 112 char = a;code = 97 char = c;code = 99 char = e;code = 101 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 = 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 = (;code = 40 char = H;code = 72 char = S;code = 83 char = -;code = 45 char = S;code = 83 char = P;code = 80 char = M;code = 77 char = E;code = 69 char = );code = 41 char = <;code = 60 char = b;code = 98 char = >;code = 62 char = ;code = 32 char = G;code = 71 char = C;code = 67 char = -;code = 45 char = M;code = 77 char = S;code = 83 char = ;code = 32 char = :;code = 58 char = ;code = 32 char = <;code = 60 char = /;code = 47 char = b;code = 98 char = >;code = 62 char = w;code = 119 char = a;code = 97 char = s;code = 115 char = ;code = 32 char = u;code = 117 char = s;code = 115 char = e;code = 101 char = d;code = 100 char = ;code = 32 char = t;code = 116 char = o;code = 111 char = ;code = 32 char = i;code = 105 char = d;code = 100 char = e;code = 101 char = n;code = 110 char = t;code = 116 char = i;code = 105 char = f;code = 102 char = y;code = 121 char = ;code = 32 char = a;code = 97 char = n;code = 110 char = d;code = 100 char = ;code = 32 char = q;code = 113 char = u;code = 117 char = a;code = 97 char = n;code = 110 char = t;code = 116 char = i;code = 105 char = f;code = 102 char = y;code = 121 char = ;code = 32 char = t;code = 116 char = h;code = 104 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 = e;code = 101 char = s;code = 115 char = ;code = 32 char = i;code = 105 char = n;code = 110 char = ;code = 32 char = S;code = 83 char = I;code = 73 char = M;code = 77 char = ;code = 32 char = m;code = 109 char = o;code = 111 char = d;code = 100 char = e;code = 101 char = .;code = 46 char = ;code = 32 char = T;code = 84 char = h;code = 104 char = e;code = 101 char = ;code = 32 char = L;code = 76 char = O;code = 79 char = Q;code = 81 char = s;code = 115 char = ;code = 32 char = a;code = 97 char = n;code = 110 char = d;code = 100 char = ;code = 32 char = L;code = 76 char = O;code = 79 char = D;code = 68 char = s;code = 115 char = ;code = 32 char = o;code = 111 char = b;code = 98 char = t;code = 116 char = a;code = 97 char = i;code = 105 char = n;code = 110 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 = 0;code = 48 char = .;code = 46 char = 0;code = 48 char = 7;code = 55 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 = 1;code = 49 char = 2;code = 50 char = ;code = 32 char = n;code = 110 char = g;code = 103 char = /;code = 47 char = m;code = 109 char = g;code = 103 char = ,;code = 44 char = ;code = 32 char = r;code = 114 char = e;code = 101 char = s;code = 115 char = p;code = 112 char = e;code = 101 char = c;code = 99 char = t;code = 116 char = i;code = 105 char = v;code = 118 char = e;code = 101 char = l;code = 108 char = y;code = 121 char = ,;code = 44 char = ;code = 32 char = f;code = 102 char = o;code = 111 char = r;code = 114 char = ;code = 32 char = a;code = 97 char = l;code = 108 char = l;code = 108 char = ;code = 32 char = t;code = 116 char = h;code = 104 char = e;code = 101 char = ;code = 32 char = s;code = 115 char = t;code = 116 char = u;code = 117 char = d;code = 100 char = i;code = 105 char = e;code = 101 char = d;code = 100 char = ;code = 32 char = c;code = 99 char = a;code = 97 char = n;code = 110 char = n;code = 110 char = a;code = 97 char = b;code = 98 char = i;code = 105 char = n;code = 110 char = o;code = 111 char = i;code = 105 char = d;code = 100 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 = 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 = p;code = 112 char = r;code = 114 char = o;code = 111 char = v;code = 118 char = e;code = 101 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 = m;code = 109 char = p;code = 112 char = l;code = 108 char = e;code = 101 char = ,;code = 44 char = ;code = 32 char = r;code = 114 char = a;code = 97 char = p;code = 112 char = i;code = 105 char = d;code = 100 char = ,;code = 44 char = ;code = 32 char = a;code = 97 char = n;code = 110 char = d;code = 100 char = ;code = 32 char = p;code = 112 char = r;code = 114 char = e;code = 101 char = c;code = 99 char = i;code = 105 char = s;code = 115 char = e;code = 101 char = .;code = 46 char = ;code = 32 char = B;code = 66 char = y;code = 121 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 = t;code = 116 char = h;code = 104 char = e;code = 101 char = ;code = 32 char = w;code = 119 char = e;code = 101 char = i;code = 105 char = g;code = 103 char = h;code = 104 char = t;code = 116 char = e;code = 101 char = d;code = 100 char = ;code = 32 char = l;code = 108 char = e;code = 101 char = a;code = 97 char = s;code = 115 char = t;code = 116 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 = s;code = 115 char = ;code = 32 char = l;code = 108 char = i;code = 105 char = n;code = 110 char = e;code = 101 char = a;code = 97 char = r;code = 114 char = ;code = 32 char = r;code = 114 char = e;code = 101 char = g;code = 103 char = r;code = 114 char = e;code = 101 char = s;code = 115 char = s;code = 115 char = i;code = 105 char = o;code = 111 char = n;code = 110 char = ;code = 32 char = (;code = 40 char = w;code = 119 char = e;code = 101 char = i;code = 105 char = g;code = 103 char = h;code = 104 char = t;code = 116 char = i;code = 105 char = n;code = 110 char = g;code = 103 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 = ;code = 32 char = 1;code = 49 char = /;code = 47 char = x;code = 120 char = 2;code = 50 char = );code = 41 char = ,;code = 44 char = ;code = 32 char = t;code = 116 char = h;code = 104 char = e;code = 101 char = ;code = 32 char = a;code = 97 char = c;code = 99 char = c;code = 99 char = u;code = 117 char = r;code = 114 char = a;code = 97 char = c;code = 99 char = y;code = 121 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 = 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 = 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 = i;code = 105 char = m;code = 109 char = p;code = 112 char = r;code = 114 char = o;code = 111 char = v;code = 118 char = e;code = 101 char = 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 = l;code = 108 char = o;code = 111 char = w;code = 119 char = e;code = 101 char = r;code = 114 char = ;code = 32 char = e;code = 101 char = n;code = 110 char = d;code = 100 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 = l;code = 108 char = i;code = 105 char = b;code = 98 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 = c;code = 99 char = u;code = 117 char = r;code = 114 char = v;code = 118 char = e;code = 101 char = ;code = 32 char = (;code = 40 char = f;code = 102 char = r;code = 114 char = o;code = 111 char = m;code = 109 char = ;code = 32 char = 0;code = 48 char = .;code = 46 char = 1;code = 49 char = 2;code = 50 char = ;code = 32 char = t;code = 116 char = o;code = 111 char = ;code = 32 char = 1;code = 49 char = 2;code = 50 char = ;code = 32 char = n;code = 110 char = g;code = 103 char = /;code = 47 char = m;code = 109 char = g;code = 103 char = ;;code = 59 char = ;code = 32 char = r;code = 114 char = ;code = 32 char = >;code = 62 char = 0;code = 48 char = .;code = 46 char = 9;code = 57 char = 8;code = 56 char = );code = 41 char = .;code = 46 char = ;code = 32 char = H;code = 72 char = a;code = 97 char = i;code = 105 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 = c;code = 99 char = o;code = 111 char = l;code = 108 char = l;code = 108 char = e;code = 101 char = c;code = 99 char = t;code = 116 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 = e;code = 101 char = i;code = 105 char = g;code = 103 char = h;code = 104 char = t;code = 116 char = ;code = 32 char = v;code = 118 char = o;code = 111 char = l;code = 108 char = u;code = 117 char = n;code = 110 char = t;code = 116 char = e;code = 101 char = e;code = 101 char = r;code = 114 char = s;code = 115 char = ;code = 32 char = (;code = 40 char = i;code = 105 char = n;code = 110 char = -;code = 45 char = p;code = 112 char = a;code = 97 char = t;code = 116 char = i;code = 105 char = e;code = 101 char = n;code = 110 char = t;code = 116 char = s;code = 115 char = ;code = 32 char = o;code = 111 char = f;code = 102 char = ;code = 32 char = a;code = 97 char = ;code = 32 char = d;code = 100 char = r;code = 114 char = u;code = 117 char = g;code = 103 char = ;code = 32 char = a;code = 97 char = b;code = 98 char = u;code = 117 char = s;code = 115 char = e;code = 101 char = ;code = 32 char = r;code = 114 char = e;code = 101 char = h;code = 104 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 = a;code = 97 char = t;code = 116 char = i;code = 105 char = o;code = 111 char = n;code = 110 char = ;code = 32 char = c;code = 99 char = l;code = 108 char = i;code = 105 char = n;code = 110 char = i;code = 105 char = c;code = 99 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 = s;code = 115 char = u;code = 117 char = b;code = 98 char = m;code = 109 char = i;code = 105 char = t;code = 116 char = t;code = 116 char = e;code = 101 char = d;code = 100 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 = 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 = 46 char = ;code = 32 char = D;code = 68 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 = 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 = d;code = 100 char = r;code = 114 char = u;code = 117 char = g;code = 103 char = s;code = 115 char = ;code = 32 char = w;code = 119 char = a;code = 97 char = s;code = 115 char = ;code = 32 char = o;code = 111 char = b;code = 98 char = s;code = 115 char = e;code = 101 char = r;code = 114 char = v;code = 118 char = e;code = 101 char = d;code = 100 char = ;code = 32 char = i;code = 105 char = n;code = 110 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 = 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 = v;code = 118 char = o;code = 111 char = l;code = 108 char = u;code = 117 char = n;code = 110 char = t;code = 116 char = e;code = 101 char = e;code = 101 char = r;code = 114 char = s;code = 115 char = ;code = 32 char = w;code = 119 char = h;code = 104 char = o;code = 111 char = ;code = 32 char = r;code = 114 char = e;code = 101 char = p;code = 112 char = o;code = 111 char = r;code = 114 char = t;code = 116 char = e;code = 101 char = d;code = 100 char = ;code = 32 char = f;code = 102 char = r;code = 114 char = e;code = 101 char = q;code = 113 char = u;code = 117 char = e;code = 101 char = n;code = 110 char = t;code = 116 char = ;code = 32 char = m;code = 109 char = a;code = 97 char = r;code = 114 char = i;code = 105 char = j;code = 106 char = u;code = 117 char = a;code = 97 char = n;code = 110 char = a;code = 97 char = ;code = 32 char = u;code = 117 char = s;code = 115 char = e;code = 101 char = ;code = 32 char = (;code = 40 char = a;code = 97 char = t;code = 116 char = ;code = 32 char = l;code = 108 char = e;code = 101 char = a;code = 97 char = s;code = 115 char = t;code = 116 char = ;code = 32 char = t;code = 116 char = e;code = 101 char = n;code = 110 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 = a;code = 97 char = ;code = 32 char = w;code = 119 char = e;code = 101 char = e;code = 101 char = k;code = 107 char = );code = 41 char = .;code = 46 char = <;code = 60 char = b;code = 98 char = r;code = 114 char = /;code = 47 char = >;code = 62 result sql = A fast method was optimized and validated with the aim to detect cannabinoids (cannabidiol, cannabinol, and delta-9-tetrahydrocannabinol) in human head hair samples. The method was based on an initial procedure of external decontamination of hair samples (10 mg) with petroleum ether, followed by alkaline digestion and further extraction of cannabinoids by means of a headspace solid-phase microextraction technique (HS-SPME) GC-MS : was used to identify and quantify the analytes in SIM mode. The LOQs and LODs obtained were 0.07 and 0.12 ng/mg, respectively, for all the studied cannabinoids. The method proved to be simple, rapid, and precise. By using the weighted least squares linear regression (weighting factor 1/x2), the accuracy of the analytical method was improved at the lower end of the calibration curve (from 0.12 to 12 ng/mg; r >0.98). Hair samples collected from eight volunteers (in-patients of a drug abuse rehabilitation clinic) were submitted to the proposed method. Detection of the drugs was observed in samples of the volunteers who reported frequent marijuana use (at least ten times a week).
Publication: J Sep Sci 2007 Jan ;30(1)::128-34.
Publication Date: 2007 Jan
Study Author(s): Dizioli Rodrigues de Oliveira, Carolina;Yonamine, Mauricio;Lucia de Moraes Moreau, Regina;
Institution: Faculdade de Ciências Farmacêuticas, Universidade de São Paulo-USP, Av. São Paulo, Brazil.
Shortcut link to this study:
A fast method was optimized and validated with the aim to detect cannabinoids (cannabidiol, cannabinol, and delta-9-tetrahydrocannabinol) in human head hair samples. The method was based on an initial procedure of external decontamination of hair samples (10 mg) with petroleum ether, followed by alkaline digestion and further extraction of cannabinoids by means of a headspace solid-phase microextraction technique (HS-SPME) GC-MS : was used to identify and quantify the analytes in SIM mode. The LOQs and LODs obtained were 0.07 and 0.12 ng/mg, respectively, for all the studied cannabinoids. The method proved to be simple, rapid, and precise. By using the weighted least squares linear regression (weighting factor 1/x2), the accuracy of the analytical method was improved at the lower end of the calibration curve (from 0.12 to 12 ng/mg; r >0.98). Hair samples collected from eight volunteers (in-patients of a drug abuse rehabilitation clinic) were submitted to the proposed method. Detection of the drugs was observed in samples of the volunteers who reported frequent marijuana use (at least ten times a week).
PMID: 17313152