A new vapor generation system for mercury species based on the UV irradiation of mercaptoethanol used in the determination of total and methyl mercury in environmental and biological samples by atomic fluorescence spectrometry
- 26 January 2007
- journal article
- research article
- Published by Springer Science and Business Media LLC in Analytical and Bioanalytical Chemistry
- Vol. 388 (4), 831-836
- https://doi.org/10.1007/s00216-007-1122-5
Abstract
A new vapor generation system for mercury (Hg) species based on the irradiation of mercaptoethanol (ME) with UV was developed to provide an effective sample introduction unit for atomic fluorescence spectrometry (AFS). Preliminary investigations of the mechanism of this novel vapor generation system were based on GC–MS and FT–IR studies. Under optimum conditions, the limits of determination for inorganic divalence mercury and methyl mercury were 60 and 50 pg mL−1, respectively. Certified reference materials (BCR 463 tuna fish and BCR 580 estuarine sediment) were used to validate this new method, and the results agreed well with certified values. This new system provides an attractive alternative method of chemical vapor generation (CVG) of mercury species compared to other developed CVG systems (for example, the traditional KBH4/NaOH–acid system). To our knowledge, this is the first systematic report on UV/ME-based Hg species vapor generation and the determination of total and methyl Hg in environmental and biological samples using UV/ME–AFS. Figure A new vapor generation system for mercury species using mercaptoethanol under UV irradiation was developed as an effective sample introduction unit for atomic fluorescence spectrometryKeywords
This publication has 27 references indexed in Scilit:
- A rapid ultrasound-assisted thiourea extraction method for the determination of inorganic and methyl mercury in biological and environmental samples by CVAASTalanta, 2005
- Photo-induced chemical vapor generation with formic acid for ultrasensitive atomic fluorescence spectrometric determination of mercury: potential application to mercury speciation in waterJournal of Analytical Atomic Spectrometry, 2005
- Online pre-reduction of selenium(vi) with a newly designed UV/TiO2 photocatalysis reduction deviceJournal of Analytical Atomic Spectrometry, 2004
- Vapor Generation by UV Irradiation for Sample Introduction with Atomic SpectrometryAnalytical Chemistry, 2004
- Recent advances in chemical vapour generation via reaction with sodium tetrahydroborateTrAC Trends in Analytical Chemistry, 2004
- Speciation analysis of mercury in seafood by using high-performance liquid chromatography on-line coupled with cold-vapor atomic fluorescence spectrometry via a post column microwave digestionAnalytica Chimica Acta, 2003
- Evaluation of different sample pre-treatment and extraction procedures for mercury speciation in fish samplesJournal of Analytical Atomic Spectrometry, 2002
- Simple methodology for methylmercury and inorganic mercury determinations by high-performance liquid chromatography–cold vapour atomic fluorescence spectrometryAnalytica Chimica Acta, 2001
- Inorganic and methylmercury speciation in environmental samplesTalanta, 1998
- Observation of Unusual Organic Mercury Species in Soils and Sediments of Industrially Contaminated SitesEnvironmental Science & Technology, 1995