摘要
目的:采用电感耦合等离子体质谱法(Inductively Coupled Plasma Mass Spectrometry,ICP-MS)测定山药中汞、砷、镉、铅、铜的含量。方法:采用微波消解法处理样品,以铋(209Bi)、锗(72Ge)、铟(115In)为内标,通过ICP-MS测定5种有害元素的含量。结果:汞在0~10.0μg·L^(-1)、砷在0~50μg·L^(-1)、镉在0~20μg·L^(-1)、铅在0~50μg·L^(-1)、铜在0~500μg·L^(-1)浓度范围内线性关系良好(r≥0.9996)。精密度实验得出,5种有害元素的相对标准偏差均≤2.2%;5种有害元素回收率分别为84.7%、87.8%、84.7%、81.9%和87.2%,相对标准偏差≤2.9%。结论:该方法简便快捷、准确度高,可用于同时测定山药中5种有害元素的含量。
Objective:Determination of harmful elements such as mercury,arsenic,cadmium,lead,and copper in yam by inductively coupled plasma mass spectrometry(ICP-MS).Method:Microwave digestion was used to treat samples,with 209Bi,72Ge,115In as internal standards.The content of five harmful elements was determined by ICP-MS.Result:The linear relationship was good within the concentration range of 0~10.0μg·L^(-1) for mercury,0~50μg·L^(-1) for arsenic,0~20μg·L^(-1) for cadmium,0~50μg·L^(-1) for lead,and 0~500μg·L^(-1) for copper.Precision test showed that the relative standard deviation of five harmful elements was less than 2.2%;the recoveries of mercury,arsenic,cadmium,lead and copper were 84.7%,87.8%,84.7%,81.9%and 87.2%,and the relative standard deviation was less than 2.9%.Conclusion:This method is simple,fast,and highly accurate,can be used to simultaneously determine the content of five harmful elements in yam.
作者
郭璞
GUO Pu(Yuncheng Comprehensive Inspection and Testing Center,Yuncheng 044000,China)
出处
《现代食品》
2024年第9期174-176,共3页
Modern Food
关键词
山药
ICP-MS
有害元素
风险评估
yam
inductively coupled plasma mass spectrometry
harmful elements
risk assessment
