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Determination Of Arsenic In A Nickel Alloy By Flow Injection Hydride Generation Atomic Absorption Spectrometry, Julian Tyson, C P. Hanna, S G. Offley
Determination Of Arsenic In A Nickel Alloy By Flow Injection Hydride Generation Atomic Absorption Spectrometry, Julian Tyson, C P. Hanna, S G. Offley
Chemistry Department Faculty Publication Series
The development of a method for the direct determination of trace arsenic quantities in nickel alloy digests, by flow injection hydride generation atomic absorption spectrometry, is described. An optimization study of the manifold and chemical parameters produced system performance, in terms of tolerance of the nickel matrix and sensitivity, such that matrix removal and pre-reduction of As(V) to As (111) prior to arsine generation were eliminated. Full recovery of the As(V) signal from a solution containing 5 ng m1- 1 in the presence of 60 µg mJ- 1 nickel was obtained. Validation of the method was achieved by analyzing a …