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APHA
SMWW 3114
Arsenic and Selenium by Hydride Generation Atomic Absorption Spectrometry
2023
6
Standard methods for the examination of water and wastewater (543.3 APHA 24th ed. Ref. Treatises&monographs FL2)
For general introductory material on atomic absorption spectrometric methods, see Section 3111 A. The two methods presented in this section are a manual method and a continuous-flow method especially recommended for selenium. Continuous-flow automated systems are preferable to manual hydride generators because the effect of sudden hydrogen generation on light-path transparency is removed and any blank response from contamination of the HCl reagent by the elements being determined is incorporated into the background baseline.