394 SELENIUM
Totals: (Complete Digestion) Se
Total selenium, nitric/perchloric acid digestion/dissolution of sample and determination by vapor generation by inductively coupled plasma atomic emission spectroscopy (ICP-AES).
Summary: This method is quantitative for selenium and is based on the wet oxidation of selenium bearing organic carbon and inorganic selenium compounds utilizing nitric, perchloric and sulfuric acids, reduction of selenate to selenite (IV), and determination by Vapor Generation Inductively-Coupled Plasma Emission Spectrometer (VG-ICP). The method has a detection limit of 0.10 ppm. It is generally reproducible within 10%.
Tracy, M. L. and Moeller, G. 1990. Continuous flow vapor generation for inductively coupled argon plasma spectrometric analysis. Part 1: Selenium. J. Assoc. Off. Anal. Chem. 73:404-410.