土壌含有貴金属分析のための家庭用電子レンジを用いた土壌のマイクロ波加熱分解法

概要

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Microwave assisted acid digestion technique was studied to obtain a simple, rapid and safe method for the determination of trace heavy metal elements in soil. In this work, Cr and V were targeted for analysis elements. For analysis of Cr and V, several microwave assisted acid digestion procedures tested in order to obtain an optimum digestion condition. In obtained acid digesoptimum digestion procedure various inorganic acids (HNO_3, H_2SO_4, HCI,and H_3PO_4) and various concentrations of acid were evaluated for the microwave assisted tion efficiency. The Certified Reference Material (CRM JSAC 0401) was used as a soil sample and used to verify the accuracy of the microwave assisted digestion method. In recommended digestion procedure, H_2SO_4 or H_3PO_4 was suitable digestion acid for Cr analysis and H_2SO_4 or HCI or H_3PO_4 was suitable digestion acid for V analysis and the obtained results for Cr and V were in good agreement with the certified values of CRM JSAC 0401, respectively.
2012-03-01