电感耦合等离子体法测定桂郁金中的微量元素  

Determination of Trace Elements Contents in Guiyujin by ICP Method

作　　者：何飞龙 刘辉庭 黄巧燕 陈剑平 

机构地区：[1]广西区地质矿产测试中心,南宁530023

出　　处：《桂林理工大学学报》2012年第2期250-252,共3页Journal of Guilin University of Technology

基　　金：广西教育厅科研项目(200911LX502)

摘　　要：以桂郁金为原料,经浓硝酸-双氧水(30%)处理后用微波消解样品,以电感耦合等离子体发射光谱法(ICP-AES)测定其中的Na、B、Mg、Al、P、Ca、Ti、Zn、Ba、Mn、Fe、K含量,Li、Be、Tl、Mo、Pb、Cd、Sr、V、Cr、Cu、Ni、Co等元素的含量则以电感耦合等离子体质谱法(ICP-MS)测定。方法的准确性用国家一级标准物质GBW-10015、GBW-10020对比分析证实。试验结果表明:桂郁金中富含Fe、Mn、Ti等微量元素,其中Fe含量最高为360μg/g,而Be、Cd、Mo、Tl、V含量较低,均低于1μg/g。该法快速简便、准确率高、精密度好,完全可以满足样品中元素含量测定要求。Guiyujin samples （Curcuma kwangsiensis S. G. Lee et C. F. Liang） are digested by HNO3 -30% H2O2 with microwave ultrasonic. The contents of Na, B, Mg, AI, P, Ca, Ti, Zn, Ba, Mn, Fe and K are determined by ICP-AES; and Li, Be, TI, Mo, Pb, Cd, Sr, V, Cr, Cu, Ni and Co are determined by ICP - MS technique. The accuracy of the method is verified by the analysis Of standard reference material GBW- 10015 and GBW- 10020. The results show that trace elements of Fe, Mn and Ti are rich in Guiyujin, the content of Fe is highest, amounting to 360 Izg/g. However the contents of Be, Cd, Mo, T1 and V in sampies are low, less than 1 ug/g. The method for the determination of inorganic elements in the sample of Guiyujin shows accuracy and precision.

关 键 词：桂郁金 广西莪术 微量元素 微波消解 ICP-MS ICP-AES 

分 类 号：O657.63[理学—分析化学] R284.1[理学—化学]