抄録
A simple and sensitive solid-phase spectrophotometry procedure was improved for the microdetermination of Cr(VI). A 0.06 cm 3 portion of a cation exchanger, Muromac AG 50W-X2, was used to concentrate the target Cr(VI) in a 20 cm 3 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 |
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ページ(範囲) | 1445-1450 |
ページ数 | 6 |
ジャーナル | analytical sciences |
巻 | 25 |
号 | 12 |
DOI | |
出版ステータス | 出版済み - 12 2009 |
All Science Journal Classification (ASJC) codes
- Analytical Chemistry