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|Improvement of the semiautomated headspace analysis method for the determination of methylmercury in biological samples|
|Lansens, P.; Baeyens, W.F.J. (1990). Improvement of the semiautomated headspace analysis method for the determination of methylmercury in biological samples. Anal. Chim. Acta 228: 93-99|
|In: Analytica Chimica Acta. Elsevier: Amsterdam. ISSN 0003-2670, more|
|Also published as |
- Lansens, P.; Baeyens, W.F.J. (1990). Improvement of the semiautomated headspace analysis method for the determination of methylmercury in biological samples, in: (1990). IZWO Coll. Rep. 20(1990). IZWO Collected Reprints, 20: pp. chapter 27 [Subsequent publication], more
Marine; Brackish water; Fresh water
An improvement in the extraction step in the method of Decadt et al. for determining methylmercury in biological tissues is described. The methylmercury is released from the tissue by use of sulphuric acid as the cleaving agent and immediately converted to the iodide form by iodoacetic acid. These reaction steps take place in a closed headspace vial. The methylmercury iodide is then headspace-injected into a gas-chromatograph and detected with a microwave-induced plasma detector. Quantitation is accomplished by standard addition. Analysis of one sample takes less than 15 min. The detection limit of the method is 20 ng methylmercury per gram biological tissue when 50 mg of tissue are taken.