Preconcentration of hydrogen selenide using hydride generation and purge-and-trap collection for the determination of selenium in water samples by atomic absorption spectrometry. Issue 19 (30th December 2022)

• Record Type: Journal Article
• Authors: Ueta, Ikuo; Kato, Daiki; Nagao, Masanori
• Is Part Of: International journal of environmental analytical chemistry. Volume 102:Issue 19(2022)
• Page Start: 7817
• Page End: 7823
• Publication Date: 2022-12-30
• Subjects: Selenium -- hydrogen selenide -- atomic adsorption spectrometry -- purge-and-trap; Ecology -- Periodicals; Chemistry, Analytic -- Periodicals; Environmental chemistry -- Periodicals; Pollution -- Periodicals; 577.14
• DOI: 10.1080/03067319.2020.1839061
• Languages: English
• ISSNs: 0306-7319

Abstract

ABSTRACT: Gaseous hydrogen selenide (H2 Se) generated by the addition of sodium tetrahydroborate (NaBH4 ) into an acidic aqueous sample was collected using an aqueous ammonia solution. The selenium (Se) concentration was determined using graphite furnace atomic absorption spectrometry (AAS). Several experimental conditions, such as the type of the collection solution, volume of NaBH4 and hydrochloric acid, and collection time, were optimized. In addition, the effect of coexisting ions was quantitatively evaluated and eliminated. The limit of detection for Se in a standard water sample was 1.3 ng/mL. The additional recovery of spiked Se in tap water and river water samples ranged from 98 ± 2.4 to 100 ± 2.2%. The proposed method facilitates simple and sensitive analysis for Se in water samples without H2 Se gas generator for AAS.