安徽农业科学2025，Vol.53Issue(9)：165-168,247,5.DOI:10.3969/j.issn.0517-6611.2025.09.036
高压密闭消解-ICP-MS法测定茶叶中20种元素
Determination of 20 Elements in Tea by High Pressure Closed Digestion-ICP-MS Method
摘要
Abstract
[Objective]To establish a method for determination of 16 rare earth elements and four heavy metals in tea by inductively coupled plasma mass spectrometry(ICP-MS)with high pressure closed digestion.[Method]After digested by the method of high pressure closed di-gestion with HNO3,Cr,As,Cd,Pb and 16 rare earth elements(Sc,Y,La,Ce,Pr,Nd,Sm,Eu,Gd,Tb,Dy,Ho,Er,Tm,Yb,Lu)in tea samples were analyzed by ICP-MS.[Result]The correlation coefficients of this method were not less than 0.999 6.The detection limit for 16 rare earth elements was 0.004-0.307 μ g/kg,and the quantification limit was 0.016-1.228 μg/kg.The detection limits for four heavy metal elements were 0.001-0.035 μg/g,and the quantification limit was 0.004-0.140 μg/g.The national standard substance GBW10052(GSB-30)and GBW10016a(GSB-7a)were selected to verify the reliability of the method.The relative errors(RE)were-9.26%-9.73%,the relative standard deviations(RSD)were equal to or less than 3.40%,the results were in good agreement with the certified values.The actual tea sam-ples were analyzed using experimental methods,and the RSD was not greater than 6.50%.[Conclusion]This method is simple,rapid,sensitive and accurate,meeting the requirements for rapid quantitative analysis of 20 elements in tea.关键词
高压密闭消解/茶叶/电感耦合等离子体质谱法(ICP-MS)/重金属元素/稀土元素Key words
High pressure closed digestion/Tea/Inductively coupled plasma mass spectrometry(ICP-MS)/Heavy metal elements/Rare earth element分类
轻工业引用本文复制引用
张芳,程祎,刘春霞,王亚萍,李小辉,陈亚杰,王军梅..高压密闭消解-ICP-MS法测定茶叶中20种元素[J].安徽农业科学,2025,53(9):165-168,247,5.基金项目
河南省自然资源厅自然资源科研项目(2023-3) （2023-3）
河南省地质矿产勘查开发局局管地质科研项目([2021]Z-32). （[2021]Z-32）
