Gas-Liquid Chromatographic Determination of Residues from the Herbicide 2-Chloro-l-(3-Ethoxy-4-Nitrophenoxy)-4-(Trifluoromethyl) Benzene
1978 ◽
Vol 61
(3)
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pp. 636-639
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Keyword(s):
Abstract Residues of 2 - chloro - 1 - (3 - ethoxy- 4 - nitrophenoxy)-4-(trifluoromethyl) benzene and reduced metabolites are determined by digesting a sample methanol extract with aluminum in aqueous 10% sodium hydroxide to convert residues to 4-[2-chloro-4-(trifluoromethyl)-phenoxy]-2-ethoxybenzenamine. This compound is partitioned into hexane, using a simultaneous distillation-extraction process. The heptafluorobutyryl derivative is then prepared, partially purified by chromatography on Florisil, and measured by electron capture gas-liquid chromatography. The method is sensitive to 0.01 ppm.
1979 ◽
Vol 62
(1)
◽
pp. 171-175
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1977 ◽
Vol 60
(6)
◽
pp. 1307-1309
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1974 ◽
Vol 57
(1)
◽
pp. 182-188
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