干桂圆中金属元素的测定  

Determination of Metal Element in Dried Longan

作　　者：薛瑞[1] 曹敏[1] 翟秀峰 王敏秀 

机构地区：[1]兰州交通大学化学与生物工程学院,兰州市安宁西路88号730070 [2]西安华晶电子技术有限公司,西安市高新区锦业二路91号710065 [3]西安隆基硅材料股份有限公司

出　　处：《光谱实验室》2011年第6期2841-2845,共5页Chinese Journal of Spectroscopy Laboratory

摘　　要：采用微波消解法处理样品,火焰原子吸收光谱法(FAAS)测定同一地区中药桂圆(皮、肉、核)中Fe、Cu、Mn、Zn、Mg、Na、K、Ca 8种金属元素的含量,在最佳仪器工作条件下,各元素的加标回收率在95.0%—102.2%之间,相对标准偏差(RSD)在0.4%—1.6%之间。该法快速简便、准确度高、精密度好,用于标准样品、实际样品的分析,结果令人满意。测定结果也为研究桂圆的药理、药效及营养价值提供了有用的数据。The amounts of eight metal elements,such as Fe,Cu,Mn,Zn,Mg,Na,K,Ca,in longan（rind,sarcocarp,kernel）,in the same area were measured by flame atomic absorption spectrometer（FAAS） with microwave digestion.Under the best conditions of instruments,the additional standard recoveries of these analytical elements were in the range of 95.0%—102.2%,and RSD were in the range of 0.4%—1.6%.The method is simple,rapid and convenient with high accuracy and good precision,and applied to the determination of standard and actual samples with satisfactory results.The testing results can also provide useful data for the research of nutritive value,pesticide effect and pharmacodynamicsof longan.

关 键 词：桂圆 金属元素 微波消解 火焰原子吸收光谱法 

分 类 号：O657.31[理学—分析化学]