ION-CHROMATOGRAPHIC SEPARATION AND ONLINE COLD VAPOR ATOMIC-ABSORPTION SPECTROMETRIC DETERMINATION OF METHYLMERCURY, ETHYLMERCURY AND INORGANIC MERCURY

被引：61

作者：

SARZANINI, C

SACCHERO, G

ACETO, M

ABOLLINO, O

MENTASTI, E

机构：

[1] Department of Analytical Chemistry, University of Turin, 10125 Turin

来源：

ANALYTICA CHIMICA ACTA | 1994年 / 284卷 / 03期

关键词：

ATOMIC ABSORPTION SPECTROMETRY; ION CHROMATOGRAPHY; ETHYLMERCURY; MERCURY; METHYLMERCURY; PRECONCENTRATION; SPECIATION; WATERS;

D O I：

10.1016/0003-2670(94)85070-4

中图分类号：

O65 [分析化学];

学科分类号：

070302 ; 081704 ;

摘要：

The ion chromatographic separation of methylmercury, ethylmercury and inorganic mercury as cysteine complexes was investigated. The chromatographic apparatus was interfaced with cold vapour atomic absorption spectrometry for detection using an on-line continuous flow cell coupled with a reduction system (sodium tetrahydroborate). The influence of the composition of the eluent (pH, ionic strength, cysteine concentration) and stripping gas flow-rate was investigated. The method was optimized by coupling an on-line preconcentration step. The detection limits, evaluated on 100.0-ml samples, were 2, 10 and 4 ng for Hg, CH3Hg and C2H5Hg, respectively. The method was applied to synthetic mixtures and natural samples (tap water) and furnished satisfactory results.

引用

页码：661 / 667

页数：7

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