A simple three-channel system for simultaneous determination of As, Se, and Sb by hydride generation and ICP emission spectrometry is described. The device is based on the use of simple, low-resolution prism monochromators for spectral line isolation, together with interference filters for general background reduction. Detection limits are found to be 1.0 μg/L, 1.3 μg/L, and 2.4 μg/L, respectively, for As, Se, and Sb. Interference studies show no significant problems for a large number of elements. Use of the method for the analysis of Standard Reference Water Samples showed generally good agreement with round-robin data.
Grace S. Pyen and Richard F. Browner, "System for Simultaneous Determination of As, Sb, and Se by Hydride Generation and Inductively Coupled Plasma Optical Emission Spectrometry," Appl. Spectrosc. 42, 262-266 (1988)