ICP-MS测定南非叶中的多种微量元素

Determination of Trace Elements in Bitter Leaf by ICP-MS

采用湿法消解处理样品，建立ICP—MS法测定南非叶中14种微量元素的方法。结果表明各种元素在其线性范围内线性关系良好，相关系数在0．9993～1．0000之间，分析结果的相对标准偏差为0．30％～3．50％，平均回收率在88．1％-98．7％，符合微量分析要求。本法简便，结果准确，重现性好，ICP—MS可同时测定多种元素，方便快捷。

Objective To determine the contents of 14 trace elements in mulberry leaves by heat digestion and inductively coupled plasma mass spectrometry （ICP-MS）. Experimental results showed that linear relationship was good, the correlative coefficient of the calibration curves was between 0.9993 and 1.000, and its RSD was between 0.30 % and 3.50 %, the recovery ratio by standard addition was 88.1%-98.7 %, the results met the requirement of microanalysis. The method proved to be simple, convenient and precise, and can be used to determine various trace elements.