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Recommended analytical methods for pesticides. 8. Determination of MCPA by the use of liquid-liquid chromatography



Recommended analytical methods for pesticides. 8. Determination of MCPA by the use of liquid-liquid chromatography



F.A.O. Plant Protect. Bull, 9: 9, 173-80



A method is described for determining MCPA in technical material containing MCPA with 4, 6-dichloro-2-methyl, 6-chloro-2-methyl and 2-methyl-phenoxyacetic acids as impurities, by means of partition chromatography, using Hyflo Super-Cel and phosphate buffer as the liquid static phase, and ethyl ether chloroform as the mobile phase. MCPA can be determined by titrating pre-determined fractions of the eluate with methanolic barium hydroxide.

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