云南农业大学学报2011，Vol.26Issue(6)：856-860,5.DOI:10.3969/j.issn.1004-390X(n).2011.06.022
中药材圆果中重金属检测的消解方法研究
Determination of Heavy Metal Contents in Chinese Medicinal Materials by Different Pretreatment Methods
摘要
Abstract
Traditional Chinese medicinal materials were digested by wet hot plate, microwave or dry digestion ways respectively. Mercury was determined by cold atomic absorption spectrometry. Arsenic was determined by GF-AAS. Copper, zinc, chromium, lead and cadmium were determined by Flame Atomic Absorption Spectrometry. The results showed that in the accuracy experiments, the ways which recovery rate over 90% were mercury, arsenic, lead and cadmium digested by aqua regia-perehloric acid, chromium, copper, lead and cadmium digested by nitric acid-perehloric acid system; Zinc digested by aqua regia-perehloric acid, nitric acid-perehloric acid system and microwave digestion. In the accuracy experiments, Mercury and arsenic were digested by aqua regia-perehloric acid, nitric acid-perehloric acid system and dry digestion; the relative standard deviations were more than 30%. Chromium, copper, lead, cadmium and zinc were determined by aqua regia-perehloric acid, nitric acid-perehloric acid system, dry digestion and microwave digestion, the relative standard deviations were less than 10%. The average relative standard deviation was 3. 3%. The aqua regia-perehloricacid should be adopted in dispelling copper, chromium, lead, cadmium, zinc, mercury, arsenic byrecovery rate and operating condition.关键词
消解/原子吸收光谱法/中药材/重金属Key words
digestion/ ICP-MS/ chinese medicinal materials/ heavy metals分类
资源环境引用本文复制引用
王吉秀,祖艳群,陈海燕,湛方栋,陈建军..中药材圆果中重金属检测的消解方法研究[J].云南农业大学学报,2011,26(6):856-860,5.基金项目
云南省普通高等学校质量工程项目 （）
云南省环境生态学精品建设课程建设 （）
云南农业大学环境保护教学团队建设 （）
云南省教育厅基金项目(2010C245). （2010C245）
