Ether derivatives for the determination of phenols and phenol-generating pesticides by electron capture gas chromatography

Abstract

The formation of ether derivatives for the gas chromatographic determination of phenols and phenol-generating pesticides provides a simple and sensitive analytical method. The properties of a series of 2,6-dinitro-4-trifluoromethylphenyl ethers were compared with those of previously reported pentafluorobenzyl and 2,4-dinitrophenyl derivatives of phenols; the three types were found to be similar in their ease of preparation, stability, and electron capture response, and formed a complimentary series for trace analysis and identification. Micro-derivatization may be applied to phenols, pesticides which generate phenols on hydrolysis, or both; for illustration, recovery of p.p.b.* levels of carbaryl insecticide and the corresponding 1-naphthol from water via the DNT derivative exceeded eighty percent. © 1972.