加压样品消解-电感耦合等离子体质谱法测定巴戟天中有害元素  

ICP-MS Determination of Harmful Elements in Morinda Officinalis How with Pressurized Sample Digestion

作　　者：文震[1] 李琼[2] 刘波[1] 郑宗坤[1] 游新奎[1] 蒲一涛[1] 

机构地区：[1]深圳大学化学与化工学院,深圳518060 [2]华南理工大学化工与能源学院,广州510640

出　　处：《理化检验（化学分册）》2009年第10期1211-1213,共3页Physical Testing and Chemical Analysis(Part B:Chemical Analysis)

基　　金：国家自然科学基金(20606013);深圳大学科研启动基金(200816);广东省绿色化学产品技术重点实验室开放基金(GC200701)

摘　　要：以硝酸-过氧化氢为消解剂,在密闭高压条件下消解巴戟天样品,并用电感耦合等离子体质谱法(ICP-MS)测定了样品溶液中有害元素。在经优化的分析条件下测得铜、锌、砷、镉、铅元素的检出限(3s/k)在0.02～0.12μg·L^(-1)之间。应用所提出方法测定了这一中草药中上述5项有害元素,测定结果的相对标准偏差(n=5)在1.7%～5.5%之间,用标准加入法测得方法的回收率在96.1%～103.7%之间。Sample of Morinda officinalis how was digested under pressure in a tightly capped vessel with a mixture of HNO2 and H2O2, and contents of harmful elements （Cu, Zn, As, CA and Pb） in the sample solution were determined by ICP-MS. Under the optimized conditions, values of detection limit （3s/k） found for the elements mentioned above were in the range of 0. 02-0. 12μg · L^-1. The proposed method was used in the analysis of substantial sample of the traditional Chinese herb, and test for recovery was made by standard addition method using the sample as matrix Value of RSD＇s （n=5） and recovery found for these S elements were in the range of 1.7%-5.5% and 96.1%-103. 7% respectively.

关 键 词：电感耦合等离子体质谱法 有害元素 加压样品消解 巴戟天 

分 类 号：O657.31[理学—分析化学]