电感耦合等离子体质谱法测定小麦粉13种重金属元素

刘静; 李湘利; 宋子艺; 褚洪东

doi:10.13386/j.issn1002-0306.2020.20.039

电感耦合等离子体质谱法测定小麦粉13种重金属元素

1. 济宁学院生命科学与工程系, 济宁市特色农产品高值化加工工程技术研究中心, 山东曲阜 273155;
2. 山东嘉源检测技术有限公司, 济宁市食品安全云检测工程技术研究中心, 山东济宁 272100

基金项目:

济宁学院教学改革研究项目(2017JX17,JX201815)。

详细信息

作者简介:
刘静(1980-),女,硕士,副教授,研究方向:园艺产品资源开发与综合利用,E-mail:liujingpretty@163.com。

通讯作者:
李湘利(1979-),男,硕士,副教授,研究方向:食品化学与分析,E-mail:lixiangli221@yeah.net。

中图分类号: TS207.3
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出版历程
- 收稿日期: 2020-01-22
- 网络出版日期: 2020-11-11
- 刊出日期: 2020-10-14

Determination of 13 Kinds of Heavy Metal Elements in Wheat Flours by Inductively Coupled Plasma Mass Spectrometry

1. Jining Engineering and Technology Research Center for Special Agricultural Products High Value Processing, Department of Life Science and Engineering, Jining University, Qufu 273155, China;
2. Shandong Cayon Testing Technology Co., Ltd., Jining Engineering and Technology Research Center for Food Safety Cloud Detection, Jining 272100, China

摘要

摘要: 为建立电感耦合等离子体质谱法测定小麦粉13种重金属元素含量的方法,以4种小麦粉为试材,用微波消解法对样品进行前处理,利用电感耦合等离子体质谱仪进行测定。结果表明:该方法检出限为0.022~0.670 μg/L,各元素标准曲线相关系数高于0.9992,相关性良好;元素加标回收率在88.00%~107.38%之间;4种样品Al、Mn、Fe、Co、Ni、Cu、Zn、Se的检出平均值在0.004~8.615 mg/kg之间,Ag、Cr、As检出值分别为0.186、0.142、0.015 mg/kg,Cd、Pb均未检出,盲检样所检出元素含量均在所给定范围内。该法具有检测快捷、灵敏度高、精确度良好、结果准确的特点,可为小麦粉重金属检测提供参考。
- 小麦粉 /
- 电感耦合等离子体质谱法 /
- 重金属元素 /
- 微波消解
Abstract: To establish a method for simultaneous determination of 13 heavy metal elements in wheat flours,heavy metal contents were determined by inductively coupled plasma mass spectrometry using 4 kinds of wheat flour as materials. The samples were pretreated by microwave digestion. The results showed that the limits of detection were ranged from 0.022 to 0.670 μg/L and the correlation coefficient of standard curve in each element was greater than 0.9992 with well correlation. The recoveries ranged from 88.00% to 107.38%. The average detection values of aluminum,manganese,iron,cobalt,nickel,copper,zinc and selenium in the four samples ranged from 0.004 to 8.615 mg/kg. The values of silver,chromium and arsenic were 0.186,0.142 and 0.015 mg/kg,respectively,while cadmium and lead were not detected. The element contents detected in the unknown sample were all within the given range. This method with the characteristics of rapid detection,high sensitivity,better precision and accurate results could provide reference for the monitoring of heavy metal pollution in wheat flour.
- wheat flour /
- inductively coupled plasma mass spectrometry /
- heavy metal elements /
- microwave digestion

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