✦ LIBER ✦

Determination of Total Mercury in Biological Materials by Cold Vapor Atomic Absorption Spectrometry after Microwave Digestion

✍ Scribed by Ujang Tinggi; Graham Craven

Publisher: Elsevier Science
Year: 1996
Tongue: English
Weight: 57 KB
Volume: 54
Category: Article
ISSN: 0026-265X
DOI: 10.1006/mchj.1996.0090

No coin nor oath required. For personal study only.

✦ Synopsis

The use of several acid mixtures for digestion of marine biological materials with microwaveassisted heating was investigated. The mixtures of HNO 3 -H 2 SO 4 -H 2 O 2 and of HNO 3 -H 2 SO 4 -HCl were most effective after microwave digestion, resulting in complete decomposition of samples. Recoveries of added mercury to marine biological tissues were satisfactory, ranging from 91 to 108%. This indicated that no matrix interference or loss of volatile mercury occurred during the analysis. The mercury content of standard reference materials after microwave digestion corresponded closely to the certified values.

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