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电感耦合等离子体发射光谱法测定东北大豆中微量元素
引用本文:张卓勇,陈杭亭,王丹,郭黎平,刘思东,刘杰,曾宪津.电感耦合等离子体发射光谱法测定东北大豆中微量元素[J].光谱学与光谱分析,2002,22(4):673-675.
作者姓名:张卓勇  陈杭亭  王丹  郭黎平  刘思东  刘杰  曾宪津
作者单位:1. 首都师范大学化学系,北京,100037
2. 中国科学院长春应用化学研究所,吉林,长春,130022
3. 东北师范大学化学学院,吉林,长春,130024
摘    要:用电感耦合等离子体原子发射光谱法(ICP-AES)测定了11种东北大豆中大量、小量和微量元素。比较了两种湿法消解方法,HNO3-HclO4,HNO3-H2SO4和干类化法对分析结果的影响。由于大豆含有较多的油脂,用混合酸消解时费时较长且需加入较多的酸,从而可能产生较高的背景空白,因此对大豆样品的前处理采用干灰法较为合适。大豆中钾和磷是大量元素,本工作还研究了钾和磷对其他元素测定的影响。结果表明,大豆中钾和磷对其他微量元素的测定没有影响。结果还表明,这11种大豆中的各微量元素的含量没有显著性差异。

关 键 词:电感耦合等离子体发射光谱法  测定  东北大豆  微量元素  元素分析  食品分析
文章编号:1000-0593(2002)04-0673-03
修稿时间:2001年6月9日

Major, Minor and Trace-elemental Contents Analysis in Northeast Soybeans by ICP-AES
Zhuo-yong Zhang,Hang-ting Chen,Dan Wang,Li-ping Guo,Si-dong Liu,Jie Liu,Xian-jin Zeng.Major, Minor and Trace-elemental Contents Analysis in Northeast Soybeans by ICP-AES[J].Spectroscopy and Spectral Analysis,2002,22(4):673-675.
Authors:Zhuo-yong Zhang  Hang-ting Chen  Dan Wang  Li-ping Guo  Si-dong Liu  Jie Liu  Xian-jin Zeng
Institution:Department of Chemistry, Capital Normal University, Beijing 100037, China.
Abstract:Major, minor and trace elemental contents in northeast China soybeans were determined by using inductively coupled plasma atomic emission spectrometry (ICP AES) Three different sample digestion methods including two wet digestions, HNO 3 HClO 4 and HNO 3 H 2SO 4 and a dry ash method were compared.Owing to the high oil content in soybeans,long time is needed and access acid should be added with mixed acid digestion methods,which may result in higher sample blank.Therefore,the dry ask method would be more proper for the pre treatment of soybean samples.Potassium and phosphorus are major elements in soybeans,so the effect of potassium and phosphorus on the other elements was investigated.Results showed that the potassium and phosphorus did not affect the determination of other trace elements.There are not significant differences in trace elemental contents for the eleven northeast China soybeans.
Keywords:Inductively coupled plasma atomic emission spectrometry  Soybean  Elemental analysis
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