核桃微量元素含量的测定  

Determination of Trace Elements in Walnut

作　　者：朱冬[1] 王磊[1] 李超[1] 郑晓程[1] 唐志华[1] 

机构地区：[1]陕西理工学院化学与环境科学学院,陕西汉中723001

出　　处：《安徽农业科学》2012年第16期8947-8949,共3页Journal of Anhui Agricultural Sciences

摘　　要：[目的]研究核桃中的微量元素,为核桃的开发应用提供依据。[方法]采用微波消解溶样,用火焰原子吸收光谱法(FASS)测定了核桃中K、Ca、Mg、Cu、Mn、Zn、Fe 7种微量元素的含量。[结果]核桃中Zn、Cu、Mn、Fe、Mg、K、Ca 7种微量元素含量依次为56.25、36.50、34.50、102.00、280.75、1 929.50、452.50μg/g,回收率在98.6%～100.9%,除了Ca和Cu的测定存在一定的误差,其他元素的RSD在0.03%～1.30%。[结论]该方法所用仪器设备简单,操作步骤方便,结果令人满意。[Objective] To study the content of trace elements in walnuts and provide basis for its development and utilization.[Method] The walnuts samples were firstly digested with microwave,and the contents of seven trace elements,including K,Ca,Mg,Cu,Mn,Zn and Fe,were determined by FASS.[Result] The contents of Zn,Cu,Mn,Fe,Mg,K and Ca were 56.25,36.50,34.50,102.00,280.75,1 929.50 and 452.50 μg/g with the recoveries between 98.6% and 100.9%.Apart from Ca and Cu whose determination had errors,the RSD of other elements was in the range of 0.03%-1.30%.[Conclusion] The instrument in the experiment is simple and easy with satisfactory results.

关 键 词：微波溶样 核桃 火焰原子吸收光谱法 微量元素 

分 类 号：S664.1[农业科学—果树学]