Hydride Preconcentration for Inductively Coupled Plasma Optical Emission Spectrometry

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Studies are presented describing an improved application of the NaBH4 reduction of soluble arsenite to form arsine as a preconcentration approach for ultra-trace level arsenic determination by inductively coupled plasma optical emission spectrometry. Specialized analyte introduction techniques are described for elimination of reaction by-products that would normally extinguish a medium power plasma discharge. An approach is presented to minimize the need for background correction and facilitate a superior arsenic detection limit (≤0.03 ng/ml) in a relatively inexpensive 1.2 kW inductively coupled plasma system.

Keywords: Arsenic; Emission spectroscopy; Hydride preconcentration; Inductively coupled plasma; Trace analysis

Document Type: Research Article

DOI: http://dx.doi.org/10.1366/0003702794925561

Affiliations: 1: Department of Chemistry, University of Arizona, Tucson, Arizona 85721; present address: Department of Chemistry, Kansas State University, Manhattan, KS 66506 2: Department of Chemistry, University of Arizona, Tucson, Arizona 85721

Publication date: July 1, 1979

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