Title

Determination of Selenium and Tellurium in Air by Atomic-Absorption Spectrometry

Abstract

Elemental selenium and tellurium, and gaseous inorganic forms of Se(IV), Se(VI), Te(IV) and Te(VI) have been determined after their adsorption on gold-coated beads. After leaching, with water and dilute hydrochloric and nitric acids, the different chemical species in each acid fraction were separated with an anion-exchange resin (Bio-Rad AG-1X8) and a cation-exchange resin (Amberlite IR-120 Plus) by varying the acidity of the leaching agent. Subsequent analysis was by graphite-fumace atomic-absorption spectrometry. The lower detection limit for Se and Te was 0.03 ng/M3 with a precision of ± 5%. The average amounts of selenium in interior and exterior air samples were about 4.73 and 1.93 ng/m3 respectively. For tellurium the corresponding values were about 0.78 and 0.24 ng/m3.

Department(s)

Chemistry

Keywords and Phrases

Selenium; Tellurium; Air Analysis; Atomic Absorption Spectrometry

International Standard Serial Number (ISSN)

00399140

Document Type

Article - Journal

Document Version

Citation

File Type

text

Language(s)

English

Rights

© 1988 Elsevier, All rights reserved.


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