Analytical Sciences
Online ISSN : 1348-2246
Print ISSN : 0910-6340
ISSN-L : 0910-6340
Pressurized Microwave Digestion Of Biological Samples for Metal Determination
Isao KOJIMATetsuo UCHIDAChuzo IIDA
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1988 Volume 4 Issue 2 Pages 211-214

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Abstract

The utility of microwave oven for simple and rapid acid digestion of zoological and botanical materials was investigated by using a double Teflon vessel with a polypropylene jacket. The microwave-assisted digestion of samples with the HNO3-HCl-HClO4-HF mixture in the bomb offers the advantage of taking much shorter process for sample preparation. The digestion was completed within 15min even under a very mild condition. Eight elements (Cu, Fe, Mn, Zn, Ca, Mg, K and Na) in the standard reference materials, NBS-SRM 1577 Bovine Liver and NIES-CRM No. 1 Pepperbush, No. 6 Mussel and No. 7 Tea leaves, were determined by one-drop flame atomic absorption and emission spectrometry. Good agreement with the certified values was obtained.

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