食品科学 ›› 2013, Vol. 34 ›› Issue (4): 204-207.

• 分析检测 • 上一篇    下一篇

电感耦合等离子发射光谱法同时测定连云港产草莓中的铅铬镉铜

曾艳霞   

  1. 淮海工学院江苏省海洋资源开发研究院
  • 收稿日期:2012-06-12 修回日期:2013-01-10 出版日期:2013-02-25 发布日期:2013-01-29
  • 通讯作者: 曾艳霞 E-mail:yojohhit@126.com
  • 基金资助:
    江苏省海洋资源开发研究院科技开放基金项目合同;淮海工学院 校自然科学基金

Simultaneous determination of heavy metal content in Strawberry with inductively coupled plasma atomic emission spectrometry (ICP-OES) digested by dry-ashing, wet digestion and microwave digestion respectively

yanxia zeng   

  • Received:2012-06-12 Revised:2013-01-10 Online:2013-02-25 Published:2013-01-29
  • Contact: yanxia zeng E-mail:yojohhit@126.com

摘要: 采用干法、湿法及微波消解分别处理5个品种草莓样品,全谱直读电感耦合等离子体原子发射光谱法(ICP-OES)同时测定试样中铅、铬、镉、铜微量元素含量并与国标允许量进行比较,同时对方法学进行了考察。实验结果表明,5种草莓品种的重金属含量在国标允许量范围,干法、湿法、微波- ICP-OES的加标回收率分别为:85.3%-104.5%,93.2%-104.6%,92.8%-106.3%,RSD%均≤20%。可以得出结论,干法、湿法、微波- ICP-OES均适合草莓铅、铬、镉、铜含量的测定,方法简便、准确,精密度好,可用于草莓中铅、铬、镉、铜的快速检测;5种品种草莓中的重金属含量未超标,重金属污染的可能性较小。

Abstract: A subject for the simultaneous determination of the content of trace heavy metals including Cd, Cr, Cu and Pb in 5 spieces of Strawberry after dry-ashing, HNO3 digestion and microwave digestion by ICP-OES was established. The contents of Cd, Cr, Cu and Pb in Strawberry are Simultaneous determinated and compared with Standard tolerance.The results show that, the contents of trace heavy metals in five species of Strawberry samples doesn’t exceed the standard. The rates of recovery of testing rusults digested with dry-ashing, HNO3 digestion and microwave digestion are 85.3%-104.5%,93.2%-104.6%,92.8%-106.3% respectively. It can be also showed that RSD% is below to 20%. The methodological study showed that the method method is accurate and reliable for the detection for the contents of Cd, Cr, Cu and Pb while for the contents of As is not suitable.It can be concluded that the method is simple,fast and accurate for the quickly Simultaneous determination the contents of trace Cd, Cr, Cu and Pb in Strawberry by using inductively coupled plasma atomic emission spectrometry.It can be also concluded that the contents of trace heavy metals in Strawberry samples doesn’t exceed the standard, and that the possiblity of the heavy metal pollution in Strawberry is little.