Determination of total mercury in biological tissues by flow injection cold vapour generation atomic absorption spectrometry following tetramethylammonium hydroxide digestion

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DOIResolve DOI: http://doi.org/10.1039/a802000k
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TypeArticle
Journal titleAnalyst
ISSN0003-2654
Volume123
IssueJune 6
Pages12151218; # of pages: 4
AbstractA simple, rapid and reliable method was developed for the determination of total mercury in biological samples. Samples were solubilized using tetramethylammonium hydroxide (TMAH). The organically bound mercury was cleaved and converted to inorganic mercury by on-line addition of KMnO4. The decomposed mercury together with inorganic mercury originally present in samples was determined by flow injection cold vapour atomic absorption spectrometry after reduction to elemental mercury vapour using NaBH4. A sample throughput of 100 measurements per hour was achieved after a 30 min dissolution with TMAH. The relative standard deviation for 20 µg l–1 Hg was 1.3% (n = 11) and the limit of detection was 0.1 µg l–1 (3σ). The proposed method was validated by the analysis of a suite of certified marine biological reference materials, DORM-2 (dogfish muscle), DOLT-2 (dogfish liver) and TORT-2 (lobster hepatopancreas), with calibration against simple HgII standards.
Publication date
LanguageEnglish
AffiliationNRC Institute for National Measurement Standards; National Research Council Canada
Peer reviewedNo
Identifier10306407
NRC number855
NPARC number8899372
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Record identifierbce96c8d-6451-4f99-96b3-fe817a35c909
Record created2009-04-22
Record modified2016-05-09
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