896
896 ARSENIC
Totals: (Complete Digestion) As
Total arsenic, 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 arsenic utilizing nitric, perchloric and sulfuric acids, reduction of arsenate to arsenite, and determination by Vapor Generation Inductively-Coupled Plasma Emission Spectrometer (VG-ICP). The method has a detection limit of approximately 1 ug/L. 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 2: Arsenic. J. Assoc. Off. Anal. Chem. 74:516-521.