Determination of some pesticides and intermediates by ion chromatography

We explored the possibility of determining some pesticides and process intermediates by ion chromatography. Some applications of this technique, standardized and adopted to meet the requirements of Gharda Chemicals (which is a leading producer of agrochemicals in India), will be presented in this communication. These include analysis of the finished products [(a) dicamba dimethylamine (DMA)/potassium/sodium salt acid and (b) 2,4-dichlorophenoxyacetic acid (2,4-D)], and the process intermediates [(c) tetrachlorobutyric acid and (d) glyoxylic acid/glycollic acid/formic acid]. Ion chromatographic analysis of sub-ppm levels of 2,5-dibromo- and monochlorobromo-phenols, in 2,5-dichlorophenol, after adequate sample preparation steps, is also being presented.