ONLINE SPECIATION OF MERCURY AND METHYLMERCURY IN AQUEOUS SAMPLES BY CHROMATOGRAPHY ATOMIC FLUORESCENCE SPECTROMETRY AFTER HYDRIDE GENERATION

被引：30

作者：

RITSEMA, R

DONARD, OFX

机构：

[1] RIKZ,NATL INST COASTAL & MARINE MANAGEMENT,9750 AE HAREN,NETHERLANDS

[2] UNIV BORDEAUX 1,PHOTOPHYS & PHOTOCHIM MOLEC LAB,F-33405 TALENCE,FRANCE

来源：

APPLIED ORGANOMETALLIC CHEMISTRY | 1994年 / 8卷 / 7-8期

关键词：

ORGANOMETALLIC SPECIATION; MERCURY; METHYLMERCURY; SEAWATER; HYDRIDE GENERATION; GAS CHROMATOGRAPHY; ATOMIC FLUORESCENCE SPECTROMETRY;

D O I：

10.1002/aoc.590080705

中图分类号：

O69 [应用化学];

学科分类号：

081704 ;

摘要：

A method is described for the determination of picogram amounts of inorganic mercury(II) and methylmercury(II) compounds in seawater. These compounds are first volatilized from the water samples by reduction to mercury (Hg-0) and formation of methylmercury hydride (CH3HgH) by means of a sodium borohydride (NaBH4) solution and cryogenically focused onto a chromatographic stationary phase. Both mercury compounds are eluted according their boiling points and are passed through a pyrolysis tube, at 900 degrees C, before entering the atomic fluorescence detector. Absolute detection limits (3 sigma) are 1 and 2 pg for, respectively, inorganic mercury and methylmercury. For seawater analysis, detection limits of 0.1-1.0 ng l(-1) can be achieved.

引用

页码：571 / 575

页数：5

共 24 条

[1]

APTE SC, 1989, ENV ANAL USING CHROM, P258

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