Determination of Some Bipyridylium Herbicides by Ring-Oven Techniques

Abstract

The development of a rapid and a simple “Weisz ring-oven” method is described for the semiquantative determination of diquat and paraquat. In this method column chromatography is used for the separation of herbicides from water and soil samples. Further evidence of the identity of individual residues is provided by thin layer chromatography.