摘要
本研究通过优化前处理和仪器条件的方式,确定了电感耦合等离子体质谱法(inductively coupled plasma mass spectrometry,ICP-MS)同时测定再生胶中5种重金属元素铅(Pb)、铜(Cu)、铁(Fe)、锌(Zn)、钡(Ba)的方法。样品采用的前处理方法为微波消解法、ICP-MS检测和外标法定量。Pb、Cu、Fe、Zn、Ba 5种重金属元素的标准曲线的相关系数r均大于0.9982,这5种重金属元素的回收率均在80.2%~104.1%范围内,相对标准偏差的范围是1.0%~7.7%。经验证,本方法的检出限低、稳定性好,适用于再生胶中5种重金属元素含量的测定。
In this study,the method of determining the content of five heavy metals of lead(Pb),copper(Cu),iron(Fe),zinc(Zn),and barium(Ba)in regenerated rubber by inductively coupled plasma mass spectrometry(ICP-MS)was optimized by improving the pre-treatment and instrument conditions.The sample pre-treatment method used was microwave digestion,and the ICP-MS was used for detection,followed by quantification using external standard method.The correlation coefficients(r)of the standard curves for Pb,Cu,Fe,Zn,and Ba were all greater than 0.9982,and the recovery rates of these five heavy metal elements were in the range of 80.2%-104.1%,with a relative standard deviation ranging from 1.0%-7.7%.This method has low detection limit and good stability,and is suitable for the determination of the content of these five heavy metals in regenerated rubber.
作者
张彤
姜玲玲
钟钰
封亚辉
吴丽娜
ZHANG Tong;JIANG Ling-Ling;ZHONG Yu;FENG Ya-Hui;WU Li-Na(Shenyang Customs Technical Centre,Shenyang 110000;Nanjing Customs Industrial Product Testing Center,Nanjing 210000;Nanjing Normal University,Nanjing 210000)
出处
《中国口岸科学技术》
2023年第4期54-58,共5页
China Port Science and Technology
基金
辽宁省2019年自然科学基金资助计划项目(2019-MS-235)。
关键词
电感耦合等离子体质谱法
再生胶
重金属
微波消解
inductively coupled plasma mass spectrometry(ICP-MS)
regenerated rubber
heavy metals
microwave digestion
