Electron Capture Determination of Cotoran, Tenoran, and Tupersan Herbicides Following Hydrolysis and Bromination

Abstract

The new substituted urea herbicides, Cotoran, Tenoran, and Tupersan, show a relatively small response to electron capture detection. By acid hydrolysis and bromination, the compounds have been converted to sensitive brominated aniline derivatives. As little as 0.2 nano-grams of the equivalent herbicides can be chromatographed and detected.