Publication
Title
Gas chromatography-inductively coupled plasma-time-of-flight mass spectrometry as a tool for speciation analysis of organomercury compounds in environmental and biological samples
Author
Abstract
An inductively coupled plasma-time-of-flight mass spectrometer has been combined with a capillary gas chromatograph for the speciation analysis of inorganic and methylmercury. The derivatisation and volatilisation of the ionic mercury species from the sample was achieved by in-situ ethylation with sodium tetraethyl borate (NaBEt(4)) in a purge-and-trap injection (PTI) system. The potential of the ICP-TOFMS for detection of fast transient signals with peak widths significantly shorter than 1 s with high temporal fidelity and ultra-trace sensitivity was demonstrated. A thorough optimisation of the instrumental parameters led to absolute detection limits of 20 fg and 1.5 pg and relative detection limits of 2 and 150 pg l(-1) for methylmercury and inorganic mercury, respectively. The accuracy of the method was demonstrated by the analysis of two certified reference materials, a freeze dried tuna fish (CRM 464) and a dogfish muscle (DORM-2), and by recovery measurements on spiked samples. Application to ultra-trace speciation analysis of organomercury compounds in ice from the French Alps has been addressed.
Language
English
Source (journal)
Journal of analytical atomic spectrometry. - London
Publication
London : 2002
ISSN
0267-9477
Volume/pages
17:11(2002), p. 1492-1497
ISI
000179068600005
Full text (Publishers DOI)
Full text (publishers version - intranet only)
UAntwerpen
Faculty/Department
Research group
Publication type
Subject
Affiliation
Publications with a UAntwerp address
External links
Web of Science
Record
Identification
Creation 03.01.2013
Last edited 26.04.2017
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