食品科学 ›› 2010, Vol. 31 ›› Issue (20): 290-292.doi: 10.7506/spkx1002-6630-201020059

• 分析检测 • 上一篇    下一篇

微波消解/ICP-AES法测定蔬菜中重金属含量

丛 俏,蔡艳荣   

  1. 渤海大学化学化工学院,应用化学辽宁省高校重点实验室
  • 收稿日期:2010-01-11 出版日期:2010-10-25 发布日期:2010-12-29
  • 通讯作者: 丛俏 E-mail:cqiao79@yahoo.com.cn
  • 基金资助:

    辽宁省教育厅科学技术研究项目(2006032;2010010)

Determination of Heavy Metals in Vegetables by Microwave Digestion/Inductively Coupled Plasma Atomic Emission Spectroscopy

CONG Qiao,CAI Yan-Rong   

  1. Liaoning Key Laboratory of Applied Chemistry, College of Chemistry and Chemical Engineering,
    Bohai University, Jinzhou 121013, China
  • Received:2010-01-11 Online:2010-10-25 Published:2010-12-29
  • Contact: CONG Qiao E-mail:cqiao79@yahoo.com.cn

摘要:

采用微波消解处理样品,以电感耦合等离子体发射光谱(ICP-AES)法测定8 种蔬菜中的Zn、Pb、Cu、Cd 4 种重金属元素的含量。结果表明:此方法的检出限为0.006~0.018μg/mL,相对标准偏差0.17%~1.76%,加标回收率为99.00%~102.95%。叶类蔬菜吸收重金属的能力比茄果类蔬菜强。ICP-AES 法测定蔬菜中重金属元素的含量具有快速、灵敏、准确性较好的优点。

关键词: ICP-AES, 微波消解, 蔬菜, 重金属

Abstract:

A microwave digestion/inductively coupled plasma atomic emission spectroscopy (ICP-AES) method was presented for the determinations of Zn, Pb, Cu and Cd in vegetables. The detection limits of the method for the elements varied from 0.006 to 0.018 mg/L, with relative standard deviations between 0.17% and1.76%, and the spike recovery ratios for them were in the range from 99.00% to 102.95%. The actual applications demonstrate that this method is sensitive, and that the leaf vegetables can adsorb more heavy metals than fruit vegetables such as eggplant.

Key words: ICP-AES, microwave digestion, vegetable, heavy metal

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