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Analysis of residues of MCPA derivatives in crops and soil. A method for analysis of 4-chloro-2-methylphenoxyaceto-o-chloro-anilide, MCPA-allyl, MCPA-ethyl and MCPA-sodium residues



Analysis of residues of MCPA derivatives in crops and soil. A method for analysis of 4-chloro-2-methylphenoxyaceto-o-chloro-anilide, MCPA-allyl, MCPA-ethyl and MCPA-sodium residues



Noyaku Kagaku Journal of Pesticide Science 1(2): 82-83



Residues of the title herbicides were extracted from unpolished rice and rice straw in an organic solvent, the anilide and esters hydrolyzed to the sodium salt and the salt converted to the chloroethyl ester. After hydrolysis but before esterification, the free acid was washed with n-hexane in aqueous hydrochloric acid to remove impurities. The chloroethyl ester was purified on a Florisil column using g.l.c. with an electron capture detector.

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