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char = e;code = 101
char = c;code = 99
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char = a;code = 97
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char = i;code = 105
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char = m;code = 109
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char = m;code = 109
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char = l;code = 108
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char = e;code = 101
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char = e;code = 101
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char = e;code = 101
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char = g;code = 103
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char = c;code = 99
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char = d;code = 100
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char = n;code = 110
char = :;code = 58
char = ;code = 32
char = i;code = 105
char = t;code = 116
char = s;code = 115
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char = a;code = 97
char = p;code = 112
char = p;code = 112
char = l;code = 108
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char = c;code = 99
char = a;code = 97
char = t;code = 116
char = i;code = 105
char = o;code = 111
char = n;code = 110
char = ;code = 32
char = f;code = 102
char = o;code = 111
char = r;code = 114
char = ;code = 32
char = C;code = 67
char = r;code = 114
char = (;code = 40
char = V;code = 86
char = I;code = 73
char = );code = 41
char = ;code = 32
char = a;code = 97
char = n;code = 110
char = d;code = 100
char = ;code = 32
char = C;code = 67
char = r;code = 114
char = (;code = 40
char = I;code = 73
char = I;code = 73
char = I;code = 73
char = );code = 41
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 = i;code = 105
char = n;code = 110
char = ;code = 32
char = w;code = 119
char = a;code = 97
char = s;code = 115
char = t;code = 116
char = e;code = 101
char = w;code = 119
char = a;code = 97
char = t;code = 116
char = e;code = 101
char = r;code = 114
char = .;code = 46
result sql = Preconcentration and speciation of chromium using a melamine based polymeric sequestering succinic acid resin: its application for Cr(VI) and Cr(III) determination in wastewater.
Preconcentration and speciation of chromium using a melamine based polymeric sequestering succinic acid resin: its application for Cr(VI) and Cr(III) determination in wastewater.
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char = l;code = 108
char = a;code = 97
char = m;code = 109
char = i;code = 105
char = n;code = 110
char = e;code = 101
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char = a;code = 97
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char = e;code = 101
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char = p;code = 112
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char = l;code = 108
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char = a;code = 97
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char = w;code = 119
char = a;code = 97
char = s;code = 115
char = ;code = 32
char = c;code = 99
char = h;code = 104
char = e;code = 101
char = c;code = 99
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char = e;code = 101
char = d;code = 100
char = ;code = 32
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char = t;code = 116
char = h;code = 104
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char = u;code = 117
char = s;code = 115
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char = ;code = 32
char = s;code = 115
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char = t;code = 116
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char = e;code = 101
char = t;code = 116
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char = b;code = 98
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char = c;code = 99
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char = h;code = 104
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char = e;code = 101
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char = );code = 41
char = ;code = 32
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char = l;code = 108
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char = t;code = 116
char = i;code = 105
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char = g;code = 103
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
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char = ;code = 32
char = w;code = 119
char = a;code = 97
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char = t;code = 116
char = e;code = 101
char = w;code = 119
char = a;code = 97
char = t;code = 116
char = e;code = 101
char = r;code = 114
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char = ;code = 32
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char = o;code = 111
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char = r;code = 114
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char = h;code = 104
char = o;code = 111
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char = m;code = 109
char = e;code = 101
char = t;code = 116
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char = c;code = 99
char = ;code = 32
char = m;code = 109
char = e;code = 101
char = t;code = 116
char = h;code = 104
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char = l;code = 108
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char = -;code = 45
char = 0;code = 48
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char = ;code = 32
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char = ;code = 32
char = l;code = 108
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char = 1;code = 49
char = );code = 41
char = ;code = 32
char = C;code = 67
char = r;code = 114
char = (;code = 40
char = I;code = 73
char = I;code = 73
char = I;code = 73
char = );code = 41
char = );code = 41
char = ;code = 32
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char = r;code = 114
char = e;code = 101
char = ;code = 32
char = c;code = 99
char = o;code = 111
char = m;code = 109
char = p;code = 112
char = a;code = 97
char = r;code = 114
char = e;code = 101
char = d;code = 100
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char = w;code = 119
char = i;code = 105
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char = h;code = 104
char = ;code = 32
char = t;code = 116
char = h;code = 104
char = o;code = 111
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char = e;code = 101
char = ;code = 32
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char = o;code = 111
char = u;code = 117
char = n;code = 110
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char = ;code = 32
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char = y;code = 121
char = ;code = 32
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char = A;code = 65
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char = n;code = 110
char = d;code = 100
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char = e;code = 101
char = ;code = 32
char = o;code = 111
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char = a;code = 97
char = i;code = 105
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char = e;code = 101
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char = r;code = 114
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char = u;code = 117
char = l;code = 108
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char = s;code = 115
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char = 1;code = 49
char = 1;code = 49
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char = .;code = 46
char = 4;code = 52
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char = 1;code = 49
char = .;code = 46
char = 8;code = 56
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char = g;code = 103
char = ;code = 32
char = l;code = 108
char = (;code = 40
char = -;code = 45
char = 1;code = 49
char = );code = 41
char = ;code = 32
char = C;code = 67
char = r;code = 114
char = (;code = 40
char = V;code = 86
char = I;code = 73
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char = ;code = 32
char = a;code = 97
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char = d;code = 100
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char = ;code = 32
char = g;code = 103
char = ;code = 32
char = l;code = 108
char = (;code = 40
char = -;code = 45
char = 1;code = 49
char = );code = 41
char = ;code = 32
char = C;code = 67
char = r;code = 114
char = (;code = 40
char = I;code = 73
char = I;code = 73
char = I;code = 73
char = );code = 41
char = );code = 41
char = ;code = 32
char = s;code = 115
char = h;code = 104
char = o;code = 111
char = w;code = 119
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
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char = <;code = 60
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result sql = A new melamine based polymeric sequestering resin was prepared for preconcentration and separation of hexavalent chromium from water, and its sequestering action was investigated. The water-insoluble, cross-linked sequestering resin was formed by reaction with bromosuccinic acid and cross-linking of melamine. The active sequestering group on the resin is NH-(Succinic acid) or salt thereof. The resulting chelating resin was characterized by infrared spectra. The newly prepared resin quantitatively retained Cr(VI) at pH 2.0-4.0 when the flow rate was maintained between 1 and 5 ml min(-1). The retained Cr(VI) was instantaneously eluted with 25 ml of 0.1 M NaOH. The chromium species were determined by a flame atomic absorption spectrometer. The limits of detection for Cr(VI) and Cr(III) were found to be 5.3 and 4.2 microg l(-1), respectively. The precision and accuracy of the proposed procedure was checked by the use synthetic and reference steel samples. The established preconcentration method was successfully applied to the determination and selective separation of Cr(VI) in electroplating industry wastewater. Total concentrations determined by the spectrophotometric method (110.3+/-0.6 g l(-1) Cr(VI) and 1.2+/-0.3 g l(-1) Cr(III)) are compared with those found by FAAS and the obtained results (110.4+/-1.8 g l(-1) Cr(VI) and 1.4+/-0.5 g l(-1) Cr(III)) show good agreement.

Publication: Talanta 2003 Apr 10 ;59(5)::1053-60. :doi: 10.1016/S0039-9140(03)00002-X.
Publication Date: 2003 Apr 10
Study Author(s): Doğutan, Melek;Filik, Hayati;Tor, Izzet;
Institution: Istanbul University, Department of Chemistry, Faculty of Engineering, Avcilar, Istanbul, Turkey.
Shortcut link to this study:
A new melamine based polymeric sequestering resin was prepared for preconcentration and separation of hexavalent chromium from water, and its sequestering action was investigated. The water-insoluble, cross-linked sequestering resin was formed by reaction with bromosuccinic acid and cross-linking of melamine. The active sequestering group on the resin is NH-(Succinic acid) or salt thereof. The resulting chelating resin was characterized by infrared spectra. The newly prepared resin quantitatively retained Cr(VI) at pH 2.0-4.0 when the flow rate was maintained between 1 and 5 ml min(-1). The retained Cr(VI) was instantaneously eluted with 25 ml of 0.1 M NaOH. The chromium species were determined by a flame atomic absorption spectrometer. The limits of detection for Cr(VI) and Cr(III) were found to be 5.3 and 4.2 microg l(-1), respectively. The precision and accuracy of the proposed procedure was checked by the use synthetic and reference steel samples. The established preconcentration method was successfully applied to the determination and selective separation of Cr(VI) in electroplating industry wastewater. Total concentrations determined by the spectrophotometric method (110.3+/-0.6 g l(-1) Cr(VI) and 1.2+/-0.3 g l(-1) Cr(III)) are compared with those found by FAAS and the obtained results (110.4+/-1.8 g l(-1) Cr(VI) and 1.4+/-0.5 g l(-1) Cr(III)) show good agreement.
PMID: 18968997

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