Comparison of two derivatizing agents for the simultaneous determination of selenite and organoselenium species by gas chromatography and atomic emission detection after preconcentration using solid-phase microextraction
Keywords: Selenite; Dimethylselenide; Dimethyldiselenide; Sodium tetraethylborate; 4,5-Dichloro-1,2-phenylenediamine; Solid-phase microextraction (SPME); Gas chromatography–atomic emission detection (GC–AED); Waters