大管回流消解ICPOMS测定植物样品中的Hg及其他痕量元素.PDF

# # Bulletin of Mineralogy, Petrology and Geochemistry Vol1 26 No1 2, Apr1 2007 ICPOMS Hg 马生凤, 孙德忠, 巩爱华, 孙红宾 , 100037 : 针对易挥发元素Hg 提出了大试管和红外加热的多孔 温消解炉的简单装置消解植物样品的大管回流法该方法结 合ICPOMS 测定H g, 指出在0. 18% LO半胱氨酸加入内标做清洗液消除汞的记忆效应, 校准曲线有 一个更好的相关系数r = 01 3, H g 的测定限可达0. 012 Lg/ g( 10R, DF= 100) ; 并比较了原子荧光测定H g 的测定限0.0013 Lg/ g ( 10R, DF= 100) 和 测定结果该方法经标准物质GSVO3GSVO4GSBO1GSBO6GSBO10 和GSBO4 验证, 测定值与标准值基本吻合实验结果表 明, 该消解方法中H g 基本没有损失, 而且ICPOMS 的测定H g 的同时可以测定LiBCrMnCoNiCuZnAsSrM oCd Ba 和Pb 等痕量元素 : 大试管回流; 电感耦合等离子体质谱ICPOMS; 植物样品; 汞 : O655 : A : 1007O2802(2007) 02O0136O05 Determination of Mercury and Other Trace Elements in Plant Samples by ICPOMS with Furnace Digestion MA ShengOfeng, SUN DeOzhong, GONG AiOhua, SUN HongObin N ational R esear ch Center of Geoanaly sis , B eij ing 100037, Ch ina Abstract In order to determination of volatilizable element H g in plant samples, the method that plant samples were digested w ith the simple settingOfurnace digestion and big cuvettes and determined by ICPOMS was brought forward in this paper. The instrument conditions were optimized. LOcysteine was preferred as the most suitable washing re- agent and was added into the inner standard solution. A better linear calibration curve was obtained with the corre- lation coefficient of 0. 3, and which the detection limit for H g w as 0. 012 Lg/ g( 10R, DF= 100) by ICPOMS . w hile the detection limit for H g was 0. 0013Lg/ g ( 10R, DF= 100) by AFS. The standard substances GSVO3, GSVO4, GSB O1, GSBO6, G