Microwave assisted extraction for trace element analysis of plant materials by ICP-AES

被引:44
作者
Borkowska-Burnecka, J [1 ]
机构
[1] Wroclaw Tech Univ, Dept Chem, PL-50370 Wroclaw, Poland
来源
FRESENIUS JOURNAL OF ANALYTICAL CHEMISTRY | 2000年 / 368卷 / 06期
关键词
D O I
10.1007/s002160000540
中图分类号
O65 [分析化学];
学科分类号
070302 ; 081704 ;
摘要
Application of microwave assisted extraction for the decomposition and dissolution of plant samples for trace metal determination by ICP-AES was examined. Dried onion, leaves of spinach beet and three reference materials CTA-OTL-1, CTA-VTL-2 and CL-1 were analyzed. Water, EDTA and hydrochloric acid (0.01, 0.10 and 1.0 M, respectively) were used as leaching solutions. The extraction efficiency was investigated by comparison of the results with those obtained after microwave wet digestion. HCl was found to be very suitable for quantitative extraction of B, Ba, Cd, Cu, Mn, Ni, Pb, Sr and Zn from the samples. For reference materials, the measured concentrations are well consistent with the certified values. The use of EDTA led to a complete extraction of B, Cd, Ni, Pb, Sr and Zn. Water was found to be a good leaching solution for boron. For extraction with HCl and EDTA, the RSD values for the concentrations measured were below 8% for most of the elements.
引用
收藏
页码:633 / 637
页数:5
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