The analysis of inorganic and methyl mercury by derivatisation methods; opportunities and difficulties

We discuss three methods of analysis of methyl and inorganic mercury in sediments and water and present new results for one of these. The methods used are (1) solvent extraction and derivatization to CH 3HgBr (with separate analysis of inorganic mercury) with determination by electron capture gas ch...

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Bibliographic Details
Published in:Chemosphere (Oxford) 1999-09, Vol.39 (7), p.1181-1197
Main Authors: Craig, P.J., Jenkins, R.O., Stojak, G.H.
Format: Article
Language:English
Subjects:
Analysis methods
Analytical chemistry
Applied sciences
Chemistry
Exact sciences and technology
General, instrumentation
Global environmental pollution
Natural water pollution
Pollution
Soil and sediments pollution
Water treatment and pollution
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Summary:We discuss three methods of analysis of methyl and inorganic mercury in sediments and water and present new results for one of these. The methods used are (1) solvent extraction and derivatization to CH 3HgBr (with separate analysis of inorganic mercury) with determination by electron capture gas chromatography, (2) aqueous phase derivatization using NaB(C 2H 5) 4 with detection by atomic absorption spectroscopy and (3) derivatization with NaBH 4 with detection of CH 3Hg and inorganic mercury by atomic absorption and mass spectroscopes. We present new results on the analytical stability of CH 3HgH and discuss errors arising in the methods.
ISSN:0045-6535
1879-1298
DOI:10.1016/S0045-6535(99)00186-1