电感耦合等离子体质谱法测定三七粉中痕量稀土  

Determination of Trace Rare Earth in Radix Notoginseng Powder by ICP–MS

作　　者：陈明岩[1] 顾婷婷[1] 邢燕燕[1] 康明芹[1] 徐立明[1] 王岸英[1] Chen Mingyan;Gu Tingting;Xing Yanyan;Kang Mingqin;Xu Liming;Wang Anying(Jilin Entry–Exit Inspection and Quarantine Bureau, Changchun　130062, China)

机构地区：[1]吉林出入境检验检疫局,长春130062

出　　处：《化学分析计量》2017年第3期14-17,共4页Chemical Analysis And Meterage

基　　金：国家质检总局项目(2011IK208)

摘　　要：建立电感耦合等离子体质谱法测定三七粉中15种痕量稀土元素的方法。样品以硝酸–过氧化氢–氢氟酸混酸体系进行微波消解,以铑、铼为内标物,在优化后的仪器条件下进行测定。镧、铈、镨、钕、钐、铕、钆、铽、镝、钬、铒、铥、镱、镥、钇的质量浓度在0.5~50μg/L范围内线性良好,相关系数r^2>0.999 9,检出限分别为3.11,2.32,1.70,2.51,1.84,1.22,1.99,1.46,2.62,2.56,1.27,2.18,1.16,1.66,1.28μg/kg。测定结果的相对标准偏差为1.88%~18.7%(n=6),回收率为86.0%~104.0%。该方法样品处理简单快速,检出限低,准确度和精密度高,适合于三七粉中15种痕量稀土元素的测定。A ICP-MS method was established for the determination of15kinds of rare earth in Radix Notoginseng powder.The samples were digested with nitric acid-hydrogen peroxide-hydrofluoric acid by microwave,analyzed with ICP-MS by using Rh,Re as internal standards.The linear range of La,Ce,Pr,Nd,Sm,Eu,Gd,Tb,Dy,Ho,Er,Tm,Yb,Lu,Y was0.5-50μg/L,the correlation coefficient was more than0.9999,and the detection limits were3.11,2.32,1.70,2.51,1.84,1.22,1.99,1.46,2.62,2.56,1.27,2.18,1.16,1.66,1.28μg/kg,respectively.The relative standard deviations were1.88%-18.7%(n=6),the recoveries of15kinds of rare earth were in the range of86.0%-104.0%.The method is suitable for determination of15kinds of rare earth in Radix Notoginseng powder with the advantages of simple and rapid sample processing,low detection limit,high accuracy and precision.

关 键 词：电感耦合等离子体质谱法 三七粉 痕量稀土 

分 类 号：O657.3[理学—分析化学]