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Position: Home > Articles > Determination of Seven Metal Elements in Eight Cereal Grains by Microwave Digestion Coupled with ICP-AES FOOD SCIENCE 2012,33 (24) 280-282

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

作  者:
张玉芬;于秀英;齐景凯
单  位:
内蒙古民族大学生命科学学院;内蒙古民族大学分析测试中心;内蒙古民族大学农学院
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
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。
译  名:
Determination of Seven Metal Elements in Eight Cereal Grains by Microwave Digestion Coupled with ICP-AES
作  者:
ZHANG Yu-fen1,YU Xiu-ying2,QI Jing-kai3(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)
关键词:
cereal grains;microwave digestion;inductively coupled plasma atomic emission spectrometry;element analysis
摘  要:
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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