Improvements of hydride generation for the speciation of arsenic in natural freshwater samples by HPLC-HG-AFS

被引：48

作者：

Bohari, Y

Astruc, A

Astruc, M

Cloud, J

机构：

[1] Univ Pau & Pays Adour, LCABIE, CNRS, UMR 5034, F-64000 Pau, France

[2] Mulawarman Univ, Dept Chem, Samarinda, Indonesia

[3] Soc Spectrafrance SA, F-64053 Pau 9, France

来源：

JOURNAL OF ANALYTICAL ATOMIC SPECTROMETRY | 2001年 / 16卷 / 07期

关键词：

D O I：

10.1039/b101591p

中图分类号：

O65 [分析化学];

学科分类号：

070302 ; 081704 ;

摘要：

A new gas-liquid separator was used to improve the hydride generation step of a hyphenated HPLC-HG-AFS system applied to arsenic speciation studies. Optimisation of the hydride generation atomic fluorescence detection with this new device produced by SpectraFrance led to a significant improvement in performance. Absolute detection limits were as low as 5-7 pg As for the four arsenic species usually encountered in water samples: As(III), As(V), monomethylarsonic acid (MMAA) and dimethylarsinic acid (DMAA). Using a 100 mul injection volume the concentration detection limits were in the range 0.05-0.07 ng ml(-1). The optimised procedure was applied to determine arsenic speciation in a wide range of natural fresh water samples.

引用

页码：774 / 778

页数：5

共 27 条

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