Zhang, D. and Sheng Zhao, G. 2013. Determination of Trace Selenium in Urine and Water Samples by Hydride Generation Atomic Absorption Spectrometry After Preconcentration/Separation with Modified Organobentonite with Dithizone. Asian Journal of Chemistry. 25, 17 (Nov. 2013), 9736–9738. DOI:https://doi.org/10.14233/ajchem.2013.15262.