超级微波消解-ICP-MS法测定洗发类化妆品中37种元素

Determination of 37 elements in shampoo cosmetics by super microwave digestion-inductively coupled plasma mass spectrometry

采用超级微波消解-电感耦合等离子体质谱(ICP-MS)建立了洗发类化妆品中37种元素含量的测定分析方法。样品经超级微波消解仪消解后,采用铼(Re)、铑(Rh)作为内标元素,采用ICP-MS同时测定洗发类化妆品中铅(Pb)、砷(As)、汞(Hg)、镉(Cd)、锂(Li)、铍(Be)、钪(Sc)、钒(V)、钴(Co)、镍(Ni)、铬(Cr)、锰(Mn)、铜(Cu)、铷(Rb)、锶(Sr)、镨(Pr)、钕(Nd)、镝(Dy)、银(Ag)、铟(In)、铯(Cs)、钡(Ba)、铊(Tl)、铋(Bi)、钍(Th)、镧(La)、铈(Ce)、铒(Er)、铕(Eu)、钆(Gd)、钬(Ho)、镥(Lu)、钐(Sm)、铽(Tb)、铥(Tm)、钇(Y)、镱(Yb)37种元素的含量。该方法在一定浓度范围内线性关系良好,线性相关系数均≥0.9950,低、中、高浓度加标回收率范围为87.1%~113.5%,RSD为0.72%~5.00%(n=6)。该方法专属性强、灵敏度高、可快速、准确测定洗发用品中37种金属元素。

A method for determination of 37 elements in shampoo cosmetics was established by using super microwave digestion-inductively coupled plasma mass spectrometry(ICP-MS).After the samples were digested on a super microwave digester,Re and Rh were applied as internal standard elements,and the concentrations of 37 elements including Pb,As,Hg,Cd,Li,Be,Sc,V,Co,Ni,Cr,Mn,Cu,Rb,Sr,Pr,Nd,Dy,Ag,In,Cs,Ba,Tl,Bi,Th,La,Ce,Er,Eu,Gd,Ho,Lu,Sm,Tb,Tm,Y and Yb were simultaneously determined by ICP-MS.The method has a good linear relationship within a certain concentration range,and the linear correlation coefficients are all≥0.995.The recovery rates of low,medium and high spiked concentrations are 87.1%-113.5%,and the RSD is 0.72%-5.00%(n=6).This method has strong specificity and high sensitivity,which can rapidly and accurately determine 37 metal elements in shampoo products.