| 微波消解-等离子体原子发射光谱法测定8种粮食中7种金属元素含量 |
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| 引用本文： | 张玉芬,于秀英,齐景凯.微波消解-等离子体原子发射光谱法测定8种粮食中7种金属元素含量[J].食品科学,2012,33(24):280-282. |
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| 作者姓名： | 张玉芬 于秀英 齐景凯 |
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| 作者单位： | 1.内蒙古民族大学分析测试中心，内蒙古 通辽 028043；2.内蒙古民族大学农学院，内蒙古 通辽 028043；3.内蒙古民族大学生命科学学院，内蒙古 通辽 028043 |
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| 基金项目： | 内蒙古民族大学自然科学基金项目(2010MS0403) |
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| 摘 要： | 采用浓硝酸-双氧水(5:1，V/V)为溶样试剂，以微波消解和电感耦合等离子体原子发射光谱法联用，同时测定8种粮食中的汞、铅、镉、砷、铜、锡和铝7种金属元素的含量。结果表明，在最佳实验条件下，0.5g粮食中各元素的加标回收率在96.85%～107.16%之间，RSD在0.96%～3.64%之间，检出限介于2.04～14.09µg/L。该方法简便、迅速、准确度和精密度高，适用于粮食中这7种金属元素含量的同时测定。
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| 关 键 词： | 粮食 微波消解 电感耦合等离子体发射光谱法 元素分析 |
| 收稿时间： | 2011-09-20 |
Determination of Seven Metal Elements in Eight Cereal Grains by Microwave Digestion Coupled with ICP-AES |
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| ZHANG Yu-fen,YU Xiu-ying,QI Jing-kai.Determination of Seven Metal Elements in Eight Cereal Grains by Microwave Digestion Coupled with ICP-AES[J].Food Science,2012,33(24):280-282. |
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| Authors: | ZHANG Yu-fen YU Xiu-ying QI Jing-kai |
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| Affiliation: | 1. Center of Analysis, Inner Mongolia University of Nationalities, Tongliao 028043, China；2. College of Agriculture, Inner Mongolia University of Nationalities, Tongliao 028043, China；3. College of Life Science, Inner Mongolia University of Nationalities, Tongliao 028043, China |
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| Abstract: | The contents of Hg, Pb, Cd, As, Cu, Sn and Al in 8 cereal grains were simultaneously determined by ICP-AES after microwave digestion with HNO3-H2O2 (5:1, V/V). Under optimum conditions, average spike recoveries of all the metal elements in 0.5 g of rice ranged from 96.85% to 107.16%, with RSDs between 0.96% and 3.64%. The limits of detection of this method for them ranged from 2.04 µg/L to 14.09 µg/L. This method was simple, quick, accurate, precise and suitable for the simultaneous determination of these elements in cereal grains. |
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| Keywords: | cereal grains microwave digestion inductively coupled plasma atomic emission spectrometry element analysis |
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