| 原子吸收光谱法测定营养品中钙钾镁铁的含量 |
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| 引用本文： | 崔晓丽,王亦军,解蕾,王士霞,张静.原子吸收光谱法测定营养品中钙钾镁铁的含量[J].分析测试技术与仪器,2009,15(3):162-164. |
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| 作者姓名： | 崔晓丽 王亦军 解蕾 王士霞 张静 |
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| 作者单位： | 青岛大学化学化工与环境学院,山东,青岛,266071 |
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| 摘 要： | 对藕粉、豆粉、芝麻糊、核桃粉中无机营养元素的含量进行考察.采用高氯酸-硝酸（1＋4）混酸消解的方法将样品在低温下消解,用镧盐作为钙、镁的释放剂以消除共存元素P的化学干扰,火焰原子吸收光谱法定量.实验测得Ca、K、Mg、Fe工作曲线的相关系数r〉0.991,加标回收率在99.31%-103.70%,相对标准偏差在2.06%以下.实验方法简单、快速、定量准确,测得各营养品中无机元素含量丰富,可作为无机营养元素的来源.
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| 关 键 词： | 火焰原子吸收光谱法 营养品 钙 钾 镁 铁 |
Determination of Ca,K,Mg and Fe in Nourishments by FAAS |
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| CUI Xiao-li,WANG Yi-jun,XIE Lei,WANG Shi-xi,ZHANG Jing.Determination of Ca,K,Mg and Fe in Nourishments by FAAS[J].Analysis and Testing Technology and Instruments,2009,15(3):162-164. |
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| Authors: | CUI Xiao-li WANG Yi-jun XIE Lei WANG Shi-xi ZHANG Jing |
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| Institution: | College of Chemical and Environment of Qing Dao University;Qingdao 266071;China |
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| Abstract: | In this paper,the contents of trace elements in nourishments such as Ca,K,Mg and Fe were determined by flame atomic absorption spectrometry.Samples were treated with an incomplete digestion method.The samples were digested in a mixed acid of HClO4-HNO3(1 + 4) under low temperature.Lanthanum salt was used as the releasing agent for calcium and magnesium.The results showed that each sample contains rich trace elements which are necessary for people.The linear correlation coefficients were more than 0.991,the ... |
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| Keywords: | flame atomic absorption spectrometry（FAAS） Nourishments Calcium Magnesium Potassium Iron |
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