Coulometric determination of herbicides containing nitro groups by reduction with electro-generated chromium(II)

Abstract

Compounds used as herbicides often contain nitro groups. For example, 2,4-dinitro-6-secbutylphenol (DNBP, dinoseb) is used as a pre-and post-emergence herbicide for the control of weeds in a variety of agricultural crops; it has also been recommended as a pre-harvest top killer for potato vines and a growth enhancer for corn. Related compounds employed as selective herbicides or insecticides include 4,6-dinitro-o-cresol (DNOC, Ditrosol) 2,6dinitro-3-amino-4-trifluoromethyl-NN-diethylaniline (dinitramine, Cobex

Differential Pulse Adsorptive Stripping Voltammetric Determination of Dinoseb and Dinoterb at a Modified Electrode

“…For these reasons, there is a need to develop a method which is faster, simple and accurate for the determination of dinoseb and dinoterb in environmental samples. Electroanalytical methods, such as coulometric 12 and differential pulse polarography at DME, 13 have also been reported in the literature. Modern electroanalytical methods which allow for the accumulation of analytes on the electrodes through a non-electrolytic process lead to the development of very sensitive, selective and rapid techniques, such as adsorptive stripping voltammetry, which has been widely employed for the trace determination of organic compounds.…”