基于微波消解的ICP-OES/ICP-MS法测定茶叶中30种矿物质元素  

Determination of 30 mineral elements in tea by microwave digestion coupled with ICP-OES/ICP-MS

作　　者：何霜 李姗 王志雄 林毅韵 叶嘉荣 李俞洁 寻知庆 

机构地区：[1]广州质量监督检测研究院,国家加工食品质量监督检验中心(广州),广东广州511447

出　　处：《食品工业科技》2017年第12期1-6,16,共7页Science and Technology of Food Industry

基　　金：广东省质量技术监督局科技立项项目(2016PZ10)

摘　　要：本文建立微波消解电感耦合等离子体光谱法/电感耦合等离子体质谱法(ICP-OES/ICP-MS)测定茶叶中矿物质元素的含量,分析和探究某地区茶叶中矿物质元素的组成。ICP-OES测定营养元素,在质量浓度0~200 mg/L范围内线性相关系数处于0.9995~1.0000之间,检出限全部不高于0.05 mg/L;ICP-MS测定重金属元素和稀土元素氧化物总量,在质量浓度0~100μg/L范围内线性相关系数处于0.9996~1.0000之间,检出限均不高于0.082μg/L。监测了福建地区32个茶叶样品的矿物质元素分布,该方法快速简便、灵敏度高,适合通量测定茶叶样品的元素组成,为科学地评价茶叶中矿物质含量提供数据参考。Abstract：In this paper,the determination mineral elements in tea were analyzed by utilizing microwave digestion-ICP-OES/ ICP-MS method.ICP-OES was used to determine the contents of nutrition elements with the detection limits no larger than 0.05 mg/L and correlation coefficients of 0.9995 ~ 1.0000. The heavy metals and total content of rare earth elements were determined by ICP-MS, combining with the detection limit of no larger than 0.082 μg/L and correlation coefficients of 0.9996 1.0000.This simple, fast and accurate method was applied to the analysis of mineral element compositions of 32 tea samples. This work could provide data reference for the scientific evaluation of mineral elements content in tea.

关 键 词：微波消解 电感耦合等离子体光谱法 电感耦合等离子体质谱法 矿物质元素 茶叶 

分 类 号：TS272.7[农业科学—茶叶生产加工]