Determination of polychloro-2-(chloromethylsulphonamido)-diphenyl ether insectproofing agents on wool textiles and in textile liquors by high-performance liquid chromatography

Abstract

Polychloro-2-(chloromethylsulphonamido) diphenyl ether insectproofing agents were extracted from wool textiles with methanol - ammonia solution in sealed ampoules and determined by normal bonded-phase high-performance liquid chromatography. Liquor samples were extracted with dichloromethane and determined similarly. Satisfactory recoveries of the insectproofing agents were obtained from spiked liquor and wool samples. Accurate and reproducible analyses of the formulations were obtained down to concentrations of 0.05%m/m on wool textiles and 0.5 mg l^–1 in liquor samples. The short analysis time and simplicity of this method make it ideally suited for the routine determination of these insectproofing agents on wool textiles.