Issue 4, 1989

Trace element analysis of biological material following pressure digestion with nitric acid-hydrogen peroxide and microwave heating

Abstract

A commercial microwave acid-digestion system employing three types of closed vessels, a pressure-relief PFA-Teflon bomb (A), a pressure-relief Berghof all PTEE bomb (B) and a completely closed Parr microwave acid digestion bomb (C), was evaluated for sample digestion prior to the determination of trace elements in a biological tissue. The digestion procedure was based on sample dissolution with an HNO3-H2O2 mixture using microwave heating. The resulting solutions, analysed by flame and graphite furnace atomic absorption spectrometry, showed good agreement for all three closed-vessel techniques. Sample preparation time was approximately 10 min for vessels B and C, and 15 min for vessel A (including subsequent cooling time and preparation of the final solution).

Article information

Article type
Paper

J. Anal. At. Spectrom., 1989,4, 323-327

Trace element analysis of biological material following pressure digestion with nitric acid-hydrogen peroxide and microwave heating

H. Matusiewicz, R. E. Sturgeon and S. S. Berman, J. Anal. At. Spectrom., 1989, 4, 323 DOI: 10.1039/JA9890400323

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