目的建立一种快速测定狸尾豆中重金属元素含量的方法。方法对样品直接消解,称重定容,ICP-MS内标法在线快速测定狸尾豆中重金属元素的含量。结果狸尾豆中含有Hg、Cd、As、Pb、Ni、Cr六种重金属元素,加标回收率在98.54%~118.54%之间,方法检出限在0.0100~0.0870μg/L之间,相对标准偏差均小于等于4.85%。结论该方法具有良好的精密度和准确度,能满足狸尾豆中重金属元素同时检测的需要。 Objective To establish a rapid method for determination of heavy metal elements in cailiao bean. Methods The samples were digested directly, the contents of heavy metals were determined by ICP-MS with internal standard method. The results showed that the content of Hg, Cd, As, Pb, Ni and Cr in six kinds of heavy metal elements of Beaver Tail Beet was higher than that of the control. The recoveries were in the range of 98.54% -118.54%. The detection limits were between 0.0100 and 0.0870 μg / L, Standard deviation of less than or equal to 4.85%. Conclusion The method has good precision and accuracy, which can meet the need of simultaneous detection of heavy metal elements in Caulis Begonia.