Determination of trace selenium by flow injection-hydride generation-derivative atomic absorption spectrometry

A flow injection-hydride generation-derivative atomic absorption spectrometry for the determination of selenium is described.Variables such as acidity,reducing agent concen- tration,argon flow rate,reaction coil length,sensitivity grade and other parameters are op- timized.Attention was paid to sensitivity,detection limits,repeatability and determination of selenium in standard substances and in tap water.The results show the proposed method is a simple,accurate and auto method with a detection limit of 0.03 ng/mL.