Improved solid-phase spectrophotometry for the microdetermination of chromium(VI) in natural water

Sulistyo Saputro, Kazuhisa Yoshimura, Shiro Matsuoka, Kô Takehara, Narsito

研究成果: Contribution to journalArticle査読

21 被引用数 (Scopus)

抄録

A simple and sensitive solid-phase spectrophotometry procedure was improved for the microdetermination of Cr(VI). A 0.06 cm3 portion of a cation exchanger, Muromac AG 50W-X2, was used to concentrate the target Cr(VI) in a 20 cm3 water sample, and resin beads were introduced in a flow cell of 1.5 mm diameter and having a 10 mm light path length for measurements using a UV-visible spectrophotometer. Three lenses were used for focusing the incident light beam and for recovering light scattered by the solid phase in the cell. The sensitivity achieved was higher by a factor of 277 compared with that of the solution method, and the detection limit was 0.014 μg dm-3. The recovery on spiked real water samples by the standard addition method was 96 - 101%. Favorable working and performance characteristics made it possible to directly determine sub-μg dm-3 amounts of Cr(VI) in natural water samples.2009

本文言語英語
ページ(範囲)1445-1450
ページ数6
ジャーナルanalytical sciences
25
12
DOI
出版ステータス出版済み - 12 2009

All Science Journal Classification (ASJC) codes

  • 分析化学

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