|
|
char = C;code = 67
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char = r;code = 114
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char = s;code = 115
char = o;code = 111
char = n;code = 110
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char = o;code = 111
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char = u;code = 117
char = p;code = 112
char = ;code = 32
char = m;code = 109
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char = t;code = 116
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char = o;code = 111
char = d;code = 100
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char = ;code = 32
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char = r;code = 114
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char = ;code = 32
char = i;code = 105
char = t;code = 116
char = s;code = 115
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char = e;code = 101
char = g;code = 103
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char = c;code = 99
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char = d;code = 100
char = i;code = 105
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char = t;code = 116
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char = .;code = 46
result sql = Comparison of cleanup methods for fipronil and its degradation products in sediment extracts.
Comparison of cleanup methods for fipronil and its degradation products in sediment extracts.char = G;code = 71
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char = e;code = 101
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char = 1;code = 49
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char = s;code = 115
char = ;code = 32
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char = s;code = 115
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char = n;code = 110
char = s;code = 115
char = i;code = 105
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result sql = Gel permeation chromatography (GPC) and solid phase extraction (SPE) were compared for cleaning extracts containing fipronil, fipronil-sulfide, and fipronil-sulfone at sub-ppb concentrations in sediment. With both methods, analytes were extracted using accelerated solvent extraction, and analyzed with gas chromatography equipped with an electron capture detector. The GPC was performed with a Waters Envirogel GPC column with dichloromethane as the mobile phase, while SPE was conducted with dual-layer cartridges containing graphitized carbon black and primary and secondary amines with a mixture of acetone and hexane as the eluting solvent. Method detection limits for fipronil, fipronil-sulfide, and fipronil-sulfone from three sediments with varying organic carbon content ranged from 0.12 to 0.52 microg/kg dry weight, while percent recoveries were 72-119% from sediment aged from 0.24 to 14d. Although both methods were effective at analyzing fipronil and its degradation products, SPE was the less expensive and less labor-intensive method.
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char = n;code = 110
char = ;code = 32
char = o;code = 111
char = f;code = 102
char = ;code = 32
char = c;code = 99
char = l;code = 108
char = e;code = 101
char = a;code = 97
char = n;code = 110
char = u;code = 117
char = p;code = 112
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char = m;code = 109
char = e;code = 101
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char = h;code = 104
char = o;code = 111
char = d;code = 100
char = s;code = 115
char = ;code = 32
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char = o;code = 111
char = r;code = 114
char = ;code = 32
char = f;code = 102
char = i;code = 105
char = p;code = 112
char = r;code = 114
char = o;code = 111
char = n;code = 110
char = i;code = 105
char = l;code = 108
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char = a;code = 97
char = n;code = 110
char = d;code = 100
char = ;code = 32
char = i;code = 105
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char = o;code = 111
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char = ;code = 32
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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 = s;code = 115
char = .;code = 46
result sql = Comparison of cleanup methods for fipronil and its degradation products in sediment extracts.
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result sql = Gel permeation chromatography (GPC) and solid phase extraction (SPE) were compared for cleaning extracts containing fipronil, fipronil-sulfide, and fipronil-sulfone at sub-ppb concentrations in sediment. With both methods, analytes were extracted using accelerated solvent extraction, and analyzed with gas chromatography equipped with an electron capture detector. The GPC was performed with a Waters Envirogel GPC column with dichloromethane as the mobile phase, while SPE was conducted with dual-layer cartridges containing graphitized carbon black and primary and secondary amines with a mixture of acetone and hexane as the eluting solvent. Method detection limits for fipronil, fipronil-sulfide, and fipronil-sulfone from three sediments with varying organic carbon content ranged from 0.12 to 0.52 microg/kg dry weight, while percent recoveries were 72-119% from sediment aged from 0.24 to 14d. Although both methods were effective at analyzing fipronil and its degradation products, SPE was the less expensive and less labor-intensive method.
Publication: Talanta 2009 Jun 15 ;78(4-5)::1408-13. :doi: 10.1016/j.talanta.2009.02.034.
Publication Date: 2009 Jun 15
Study Author(s): Brennan, Amanda A;You, Jing;Lydy, Michael J;
Institution: Fisheries and Illinois Aquaculture Center & Department of Zoology, 171 Life Science II, Southern Illinois University, Carbondale, IL 62901, USA.
Shortcut link to this study:
Publication Date: 2009 Jun 15
Study Author(s): Brennan, Amanda A;You, Jing;Lydy, Michael J;
Institution: Fisheries and Illinois Aquaculture Center & Department of Zoology, 171 Life Science II, Southern Illinois University, Carbondale, IL 62901, USA.
Shortcut link to this study:
Gel permeation chromatography (GPC) and solid phase extraction (SPE) were compared for cleaning extracts containing fipronil, fipronil-sulfide, and fipronil-sulfone at sub-ppb concentrations in sediment. With both methods, analytes were extracted using accelerated solvent extraction, and analyzed with gas chromatography equipped with an electron capture detector. The GPC was performed with a Waters Envirogel GPC column with dichloromethane as the mobile phase, while SPE was conducted with dual-layer cartridges containing graphitized carbon black and primary and secondary amines with a mixture of acetone and hexane as the eluting solvent. Method detection limits for fipronil, fipronil-sulfide, and fipronil-sulfone from three sediments with varying organic carbon content ranged from 0.12 to 0.52 microg/kg dry weight, while percent recoveries were 72-119% from sediment aged from 0.24 to 14d. Although both methods were effective at analyzing fipronil and its degradation products, SPE was the less expensive and less labor-intensive method.
PMID: 19362209
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