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Revista de Chimie (Rev. Chim.), Year 2012, Volume 63, Issue 1,





AURA LICSANDRU, VERONICA NACEA, RICA BOSCENCU
Microwave Assisted Digestion of Heroin Street Samples for Trace Metals Analysis by Inductively Coupled Plasma Mass Spectrometry

Abstract:

The present paper describes the development of a microwave acid digestion procedure for street heroin samples in order to achieve sample dissolution prior the determination of major and trace elements employing inductively coupled plasma mass spectrometry (ICPMS). Powdered sample aliquots were dissolved with various acid mixtures and different microwave digestion processes were tested. The optimized acid mixture for digestion of heroin samples consisted of 6 ml HNO3 and 2 ml H2O2 and the best digestion program had 30 minutes with two ramps of microwave power up to 550 W. The use of this condition results in analytical recoveries of major (Al and Mg) and trace (Cu and Co) elements in the range between 92% and 104% with RSD% of less than 10%. Keywords: heroin, microwave digestion, trace elements, ICP-MS, recovery

Issue: 2012, Volume 63, Issue 1
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