Gas-Liquid Chromatographic Determination of Terbuthylazine Technical and Its Formulations: Collaborative Study

Abstract

Terbuthylazine technical and its 80% wettable powder were analyzed in a CIPAC collaborative study. The content and the identity were determined by gas-liquid chromatography on a column of 3% Carbowax K20M on Gas-Chrom Q, using di-n-pentylphthalate as the internal standard. Results obtained from 27 government, university, and industrial collaborators showed within-laboratory repeatability of 1.3% for the technical and 1.0% for the wettable powder. Reproducibility was 2.1% for both samples. The method has been adopted official first action

Comparison of Capillary Electrophoresis, HPLC, and Enzyme Immunoassay for Terbuthylazine Detection in Water

“…Several methods for the determination of terbuthylazine in water have been reported. Usually, highperformance liquid chromatography (HPLC) (Coquart and Hennion, 1991;Schlett, 1991; Di Corda and Marchetti, 1992;Steinheimer, 1993) and gas chromatography (GC) (Meyer et al, 1981;Davi et al, 1992) are used to detect terbuthylazine in water. Recently, capillary electrophoresis (CE) has been reported as a novel approach for the determination of sulfonylurea herbicides (Dinelli et al, 1993a,b) and of s-triazine herbicides in tap and surface waters (Dinelli et al, 1992).…”