DETERMINATION OF ARSENIC COMPOUNDS IN WATER SAMPLES BY LIQUID-CHROMATOGRAPHY INDUCTIVELY-COUPLED PLASMA-MASS SPECTROMETRY WITH AN IN-SITU NEBULIZER-HYDRIDE GENERATOR

被引：75

作者：

HWANG, CJ ^{[1
]}

JIANG, SJ ^{[1
]}

机构：

[1] NATL SUN YAT SEN UNIV,DEPT CHEM,KAOHSIUNG 804,TAIWAN

来源：

ANALYTICA CHIMICA ACTA | 1994年 / 289卷 / 02期

关键词：

LIQUID CHROMATOGRAPHY; INDUCTIVELY COUPLED PLASMA MS; ARSENIC; HYDRIDE GENERATION; SPECIATION; WATERS;

D O I：

10.1016/0003-2670(94)80104-5

中图分类号：

O65 [分析化学];

学科分类号：

070302 ; 081704 ;

摘要：

A preliminary study of an in situ nebulizer-hydride generator as a sample introduction device for an inductively coupled plasma mass spectrometry (ICP-MS) system is described. The samples were ionic arsenic compounds that had undergone chromatographic separation before injection into the hydride generator. L-Cysteine was used instead of potassium iodide as the prereductant. Only mild treatment with nitric acid was necessary to obtain a satisfactory hydride efficiency. The sensitivity, detection limits and reproducibility of a liquid chromatographic (LC)-ICP-MS system with a hydride generator were comparable to or better than an LC-ICP-MS system with conventional pneumatic nebulization or other sample introduction techniques. The limits of detection for various arsenic species were in the range 11-51 ng l(-1). The concentrations of various arsenic species in several natural water samples were determined.

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页码：205 / 213

页数：9

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