Determination of mercury in zinc ore concentrate reference materials using flow injection and cold-vapor atomic absorption spectrometry

A flow-injection, cold-vapor atomic absorption spectrophotometric method was developed for the determination of trace amounts of mercury in a proposed zinc ore concentrate Standard Reference Material (SRM 113b). The samples were digested with nitric and hydrochloric acids in closed Teflon digestion...

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Bibliographic Details
Published inTalanta (Oxford) Vol. 40; no. 10; pp. 1477 - 1480
Main Authors Saraswati, Rajananda, Beck, Charles M., Epstein, Michael S.
Format Journal Article
LanguageEnglish
Published Amsterdam Elsevier B.V 01.10.1993
Oxford Elsevier
Subjects
Analytical chemistry
Chemistry
Exact sciences and technology
Spectrometric and optical methods
Trace analysis
Chemical analysis
Ore
Sample preparation
Acid digestion
Certified reference material
Mercury
Flow injection
Atomic absorption spectrometry
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Summary:A flow-injection, cold-vapor atomic absorption spectrophotometric method was developed for the determination of trace amounts of mercury in a proposed zinc ore concentrate Standard Reference Material (SRM 113b). The samples were digested with nitric and hydrochloric acids in closed Teflon digestion vessels. The experimental details for sample preparation and the flow injection method are discussed. The effect of matrix and various acid concentrations on the extraction and subsequent analysis of mercury were also studied. The method has a detection limit of 0.08 μg Hg/g in the sample. A certified reference material (CZN-1) was analyzed and the results obtained agreed well with the certified value.
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ISSN:0039-9140
1873-3573
DOI:10.1016/0039-9140(93)80356-V