微波消解ICP-AES测定7种冻干水果中13种微量元素  

Determination of 13 Trace Elements in 7 Kinds of Freeze-dried Fruits by Microwave Digestion with ICP-AES

作　　者：冯颖俊 杨理[2] FENG Ying-jun;YANG Li(Henan Geology Mineral College,Zhengzhou,Henan 450007;Henan Institute of Science and Technology,Xinxiang,Henan 453003)

机构地区：[1]河南地矿职业学院,河南郑州450007 [2]河南科技学院,河南新乡453003

出　　处：《安徽农业科学》2022年第7期181-183,共3页Journal of Anhui Agricultural Sciences

摘　　要：[目的]建立微波消解结合电感耦合等离子体原子发射光谱法(ICP-AES)同时测定冻干水果中As、Ca、Cd、Cr、Cu、Fe、K、Mg、Mn、Na、Ni、Pb、Zn共13种微量元素含量的分析方法。[方法]利用微波消解法处理样品,样品中的微量元素在消解过程中稳定存在,通过ICP-AES同时测定样品中13种微量元素含量。[结果]各待测微量标准溶液质量浓度在0.01~8.00μg/mL呈良好的线性关系,决定系数(R^(2))在0.998482~0.999954,检出限为0.0006~0.3641μg/mL,添加回收率在96.85%~101.28%,相对标准偏差(RSD)在0.2%~4.9%。[结论]该方法适用于冻干水果中微量元素的测定,可依据微量元素含量判断其矿物质营养价值,对样品进行微量元素风险监控。[Objective]To establish a method for simultaneous determination of As,Ca,Cd,Cr,Cu,Fe,K,Mg,Mn,Na,Ni,Pb and Zn in freeze-dried fruits by microwave digestion and inductively coupled plasma atomic emission spectrometry(ICP-AES).[Method]Microwave digestion method was used to treat the sample,and the trace elements in the sample were stable in the digestion process.The contents of 13 trace elements in the samples were simultaneously determined by ICP-AES.[Result]The mass concentration of each trace standard solution showed a good linear relationship in the range of 0.01-8.00μg/mL,the determination coefficient(R^(2))was 0.998482-0.999954,the detection limit was 0.0006-0.3641μg/mL,the recovery was 96.85%-101.28%,and the relative standard deviation(RSD)was 0.2%-4.9%.[Conclusion]This method is suitable for the determination of trace elements in freeze-dried fruits.The nutritional value of minerals can be judged according to the content of trace elements,and the risk of trace elements can be monitored for the samples.

关 键 词：微波消解 电感耦合等离子体原子发射光谱 冻干水果 微量元素 含量测定 

分 类 号：TS255.7[轻工技术与工程—农产品加工及贮藏工程]