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result sql = Simple one-step extraction and cleanup by pressurized liquid extraction for gas chromatographic-mass spectrometric determination of pesticides in green leafy vegetables.
Simple one-step extraction and cleanup by pressurized liquid extraction for gas chromatographic-mass spectrometric determination of pesticides in green leafy vegetables.
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char = e;code = 101
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char = ;code = 32
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char = h;code = 104
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char = i;code = 105
char = v;code = 118
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char = d;code = 100
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char = a;code = 97
char = t;code = 116
char = i;code = 105
char = o;code = 111
char = n;code = 110
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char = ;code = 32
char = r;code = 114
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char = e;code = 101
char = d;code = 100
char = ;code = 32
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char = r;code = 114
char = o;code = 111
char = m;code = 109
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char = .;code = 46
char = ;code = 32
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char = ;code = 32
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char = i;code = 105
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char = t;code = 116
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char = ;code = 32
char = d;code = 100
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char = e;code = 101
char = c;code = 99
char = t;code = 116
char = i;code = 105
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char = v;code = 118
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char = e;code = 101
char = s;code = 115
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char = i;code = 105
char = s;code = 115
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
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char = s;code = 115
char = ;code = 32
char = s;code = 115
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char = c;code = 99
char = c;code = 99
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char = p;code = 112
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char = i;code = 105
char = e;code = 101
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char = o;code = 111
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char = e;code = 101
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char = e;code = 101
char = a;code = 97
char = f;code = 102
char = y;code = 121
char = ;code = 32
char = v;code = 118
char = e;code = 101
char = g;code = 103
char = e;code = 101
char = t;code = 116
char = a;code = 97
char = b;code = 98
char = l;code = 108
char = e;code = 101
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char = .;code = 46
char = <;code = 60
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char = /;code = 47
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result sql = A simple one-step extraction and cleanup using a pressurized liquid extraction method was developed for the gas chromatographic-mass spectrometric determination of pesticides in vegetables. The pressurized liquid extraction conditions were optimized and cleanup agents were evaluated. The investigated pesticides included six insecticides, chlorpyrifos methyl, pirimiphos-methyl, malathion, chlorpyrifos, O-ethyl O-4-nitrophenylphenyl phosphonothioate (EPN) and permethrins, a fungicide, isoprothiolane, and a herbicides, thiobencarb. The cleanup agent and a mixture of the vegetable and anhydrous sodium sulfate were separately packed in an extraction vessel. A transparent and colorless extract was obtained using graphitized carbon as the cleanup agent. The overall recoveries were 71-103% and the relative standard deviations ranged from 5.6 to 24%. The limit of detection values were 3-8 microg kg(-1). This method was successfully applied to green leafy vegetables.

Publication: J Chromatogr A 2007 Dec 21 ;1175(2)::181-6.
Publication Date: 2007 Dec 21
Study Author(s): Tanaka, Tomomi;Hori, Tomiyuki;Asada, Takashi;Oikawa, Kikuo;Kawata, Kuniaki;
Institution: Faculty of Applied Life Sciences, Niigata University of Pharmacy and Applied Life Sciences, 265-1 Higashijima, Akiha-ku Niigata, Niigata 956-8603, Japan.
Shortcut link to this study:
A simple one-step extraction and cleanup using a pressurized liquid extraction method was developed for the gas chromatographic-mass spectrometric determination of pesticides in vegetables. The pressurized liquid extraction conditions were optimized and cleanup agents were evaluated. The investigated pesticides included six insecticides, chlorpyrifos methyl, pirimiphos-methyl, malathion, chlorpyrifos, O-ethyl O-4-nitrophenylphenyl phosphonothioate (EPN) and permethrins, a fungicide, isoprothiolane, and a herbicides, thiobencarb. The cleanup agent and a mixture of the vegetable and anhydrous sodium sulfate were separately packed in an extraction vessel. A transparent and colorless extract was obtained using graphitized carbon as the cleanup agent. The overall recoveries were 71-103% and the relative standard deviations ranged from 5.6 to 24%. The limit of detection values were 3-8 microg kg(-1). This method was successfully applied to green leafy vegetables.
PMID: 17996881

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