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当前位置: 首页 > 文章 > 微波消解-石墨炉原子吸收法测定川芎镉含量方法学研究 安徽农业科学 2016 (5) 130-132
Position: Home > Articles > Determination of Cadmium Concentration of Chuanxiong Rhizoma by Microwave Digestion-Graphite Furnace Atomic Absorption Journal of Anhui Agricultural Sciences 2016 (5) 130-132

微波消解-石墨炉原子吸收法测定川芎镉含量方法学研究

作  者：
李阳;韩桂琪;何难;黄彪;彭成;国锦琳
单  位：
成都中医药大学中药材标准化教育部重点实验室中药资源系统研究与开发利用省部共建国家重点实验室培育基地
关键词：
镉含量;川芎;微波消解;石墨炉原子吸收法;定量测定
摘  要：
[目的]建立准确测定川芎中镉含量的分析方法。[方法]微波消解法消化经粉碎混匀的川芎块根样品0.1 g,消解总时间25 min,消化液赶酸后稀释定容100 m L,以石墨炉原子吸收法测定总镉浓度。选择1.0 g/L磷酸作基体改进剂提高灰化温度至550℃。[结果]方法检出限为0.08 mg/kg,线性范围为0.08~2.00μg/L,日内精密度的RSD为0.2%~6.5%。测定5个种植区域的川芎样品共48份的加标样品回收率为96.0%~109.6%。[结论]该方法测定川芎中镉含量灵敏、准确、高效、易普及,为准确掌握川芎镉含量分布提供了可靠的定量方法。
译  名：
Determination of Cadmium Concentration of Chuanxiong Rhizoma by Microwave Digestion-Graphite Furnace Atomic Absorption
作  者：
LI Yang;HAN Gui-qi;HE Nan;GUO Jin-lin;Ministry of Education Key Laboratory of Standardization of Traditional Chinese Medicine,State Key Laboratory Breeding Base of System Research and Development and Utilization of Traditional Chinese Medicine,Chengdu University of TCM;
关键词：
Cadmium concentration;;Chuangxiong Rhizoma;;Microwave digestion;;Graphite furnace absorption;;Quantitative analysis
摘  要：
[Objective] To establish an analysis method to accurately determine the cadmium concentration of Chuanxiong Rhizoma.[Method] The tuberous root of Chuanxiong Rhizoma was pulverized and 0.1 g of the powder was digested by microwave.After 25 min of digestion,the acid was drove by heating and diluted to 100 m L.The cadmium concentration of the sample solution was detected by graphite furnace atomic absorption.1.0 g / L phosphoric acid was used as the matrix modifier and the ashing temperature was raised to 550 ℃.[Result]The detection limit was 0.08 mg / kg;linear range was 0.08-2.0 μg / L;RSD of intraday precision was 0.2%-6.5%.The recovery rates of 48 samples were 96.0%-109.6% in five planting areas.[Conclusion] This method is sensitive,effective and accurate to detect the cadmium concentration in Chuanxiong Rhizoma,and provides reliable quantitative method for the investigation of accurate distribution of cadmium concentration in Chuanxiong Rhizoma.

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