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On-line preconcentration/determination of cadmium in drinking water on activated carbon using 8-hydroxyquinoline in a flow injection system coupled to an inductively coupled plasma optical emission spectrometer

icecream 添加于 2012-2-21 13:20 | 1248 次阅读 | 0 个评论

作者
Cerutti S, Silva MF, Gásquez JA, Olsina RA, Martinez LD
摘要
An on-line cadmium preconcentration and determination system implemented with inductively coupled plasma optical emission spectrometry associated to flow injection was studied. Cadmium was retained as Cd–8-hydroxyquinoline complex at pH 10.0. The cadmium complex was removed from the conical minicolumn packed with activated carbon with 20% (v/v) nitric acid. An enrichment factor of 80-fold for a sample volume of 50 ml was obtained. The detection limit (DL) value for the preconcentration of 50 ml of sample was 18 ng l −1 . The relative standard deviation was 2.5%, calculated from the peak heights obtained. The calibration graph using the preconcentration system for cadmium was linear with a correlation coefficient of 0.9995 at levels near the DLs up to at least 100 ng ml −1 . The method was successfully applied to the determination of total cadmium in drinking water samples.
详细资料
- 文献种类: Journal Article
- 期刊名称: Spectrochimica Acta Part B: Atomic Spectroscopy
- 期刊缩写: Spectrochimica Acta Part B: Atomic Spectroscopy
- 期卷页: 2003年第58卷第1期 43-50页
- ISBN: 0584-8547
学科领域生物医药 » 预防卫生学
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