Determination of total arsenic in urine by hydride AAS after UV-digestion

被引：15

作者：

Ritsema, R

vanHeerde, E

机构：

[1] Laboratory of Inorganic-Analytical Chemistry, National Institute of Public Health and the Environment, P.O. Box 1

来源：

FRESENIUS JOURNAL OF ANALYTICAL CHEMISTRY | 1997年 / 358卷 / 7-8期

关键词：

D O I：

10.1007/s002160050519

中图分类号：

O65 [分析化学];

学科分类号：

070302 ; 081704 ;

摘要：

A method for analysing arsenic in urine samples by Flow Injection Analysis-Atomic Absorption Spectrometry (FIA-AAS) after ultra-violet (UV) digestion is developed and validated. The validated method has the following performance characteristics: limit of detection (LOD) 0.5 mu g L-1, repeatability and reproducibility better than 5% and 10% relative standard deviation (RSD) respectively for arsenic concentrations above 3 mu g L-1, linear range 0.5-40 mu g L-1. Validation of the method was performed by analysing several certified reference materials. Results obtained were well within the certified intervals, Several urine samples analysed by UV-FIA-AAS were also analysed by Inductively Coupled Plasma-Mass Spectrometry after High Performance Liquid Chromatography (HPLC-ICP-MS) in order to investigate comparability, Again results were satisfactory, arsenic concentrations in urine samples did not differ from each other significantly. Storage conditions were also studied. Urine samples are best stored in polyethylene containers at 5 +/- 4 degrees C and are stable in arsenic content for at least 30 days.

引用

页码：838 / 843

页数：6

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