Gas Chromatographic Determination of Pentachlorophenol and Sodium Pentachlorophenate Residues in Fruits

摘要

SUMMARYA sensitive procedure for the determination of pentachlorophenol and sodium pentachlorophenate residues on fruits by electron‐capture gas chromatography is described. In this method sodium pentachlorophenate is converted to pentachlorophenol in acid solution prior to analysis. The pentachlorophenol is then methylated with diazomethane, and is analyzed as the methyl ether by electron‐capture gas chromatography. As little as 0.01 ppm can be detected, with recovery values ranging from 76 to