UV-induced atomization of gaseous mercury hydrides for atomic fluorescence spectrometric detection of inorganic and organic mercury after high performance liquid chromatographic separation

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DOIResolve DOI: http://doi.org/10.1039/c3ja30363b
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TypeArticle
Journal titleJournal of Analytical Atomic Spectrometry
ISSN0267-9477
Volume28
Issue4
Pages510515; # of pages: 6
SubjectAnalytical results; Atomic fluorescence; Atomic fluorescence spectrometry; Experimental conditions; Limits of detection; Liquid chromatographic separations; Relative standard deviations; Spectrometric detection; Atomization; Chromatography; Fluorescence spectroscopy; High performance liquid chromatography; Hydrides; Tissue; Mercury (metal)
AbstractA novel, simple, low power, low temperature (<45 °C) and high efficiency atomization technique using ultraviolet (UV) radiation was proposed for the atomization of gaseous mercury hydrides for their determination by atomic fluorescence spectrometry (AFS). This technique was used for the detection of inorganic mercury (Hg2+) and organic mercury (MeHg + and EtHg+) after high performance liquid chromatographic separation. In the proposed method, with 0.5% (m/v) KBH4 used as a reductant, inorganic mercury was reduced to elemental mercury, whereas the organic mercury species formed their respective volatile organic mercury hydrides (MeHgH and EtHgH) which were flushed to the UV atomizer for atomization and AFS detection. Under the optimized experimental conditions, the limits of detection were found to be 0.38, 0.41 and 0.56 μg L-1, and the relative standard deviations (n = 3) were 1.1%, 2.6% and 1.4% for Hg 2+, MeHg+ and EtHg+, respectively. The accuracy of the proposed method was validated by analyzing a certified reference sample (fish muscle tissue) with a satisfactory analytical result, and two water samples with recoveries in the range of 93.8-97.4%.© The Royal Society of Chemistry 2013.
Publication date
LanguageEnglish
AffiliationNational Research Council Canada (NRC-CNRC); NRC Institute for National Measurement Standards (INMS-IENM)
Peer reviewedYes
NPARC number21269793
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Record identifier179ba68b-51fd-405f-ad62-3e94e5d72ea5
Record created2013-12-13
Record modified2016-05-09
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