食品科学 ›› 2010, Vol. 31 ›› Issue (16): 220-224.doi: 10.7506/spkx1002-6630-201016048

• 分析检测 • 上一篇    下一篇

四川省食用菌中7种重金属含量测定及污染评价

陈 黎,刘 俊,张 璐,李玉婷,张 骁   

  1. 四川农业大学食品学院
  • 收稿日期:2009-11-09 修回日期:2010-04-24 出版日期:2010-08-25 发布日期:2010-12-29
  • 通讯作者: 陈黎 E-mail:chenli167541@yahoo.com.cn

Determination of Seven Heavy Metals and Pollution Assessment in Edible Fungi from Sichuan Province

CHEN Li,LIU Jun,ZHANG Lu,LI Yu-ting,ZHANG Xiao   

  1. College of Food Science, Sichuan Agricultural University, Ya’an 625014, China
  • Received:2009-11-09 Revised:2010-04-24 Online:2010-08-25 Published:2010-12-29
  • Contact: CHEN Li, E-mail:chenli167541@yahoo.com.cn

摘要:

目的:对四川地区食用菌中重金属污染情况进行评价。方法:分别采用原子荧光法测定As、Hg 和Pb,原子吸收法测定Cu、Mn、Cr 和Cd;对测定结果采用单因子污染指数法和内梅罗污染指数法进行污染评价。结果:所调查的52 份食用菌总合格率仅为7.69%,Cr、Hg 和Cd 含量在部分食用菌中超标,其中Cr 元素超标最为严重;而元素Mn 在食用菌中的含量相对其余6 种元素最多,平均可达15.93mg/kg;污染评价结果显示,Cr 对食用菌污染最严重。结论:四川地区食用菌重金属污染严重,并且应尽快完善Mn 含量的相关标准。

关键词: 食用菌, 重金属, 含量, 原子荧光, 原子吸收, 污染评价

Abstract:

The contents of As, Hg and Pb in 5 edible fungal species from different parts of Sichuan province were determined by atomic fluorescence spectroscopy (AFS) and those of Cu, Cr and Cd by atomic absorption spectroscopy (AAS). Based on the results of determination, an assessment of heavy metal pollution was made by single factor pollution index and Nemerow pollution index methods. The results showed that the total eligibility rate of 52 tested samples was only 7.96%. The contents of Cr, Hg and Cd were above the regulated criteria in some of these samples, and the content of Cr exceeded the national standard more seriously than those of the other two heavy metals. The average content of Mn in all these samples reached 15.93 mg/kg, the highest among the 7 elements. The pollution evaluations also showed that the pollution situation of Cr was the most serious. As a conclusion, heavy metal pollution in edible fungi from Sichuan province is very serious and meanwhile, the relevant standards for Mn content should be improved as soon as possible.

Key words: edible fungi, heavy metals, content, atomic fluorescence spectroscopy (AFS), atomic absorption spectroscopy (AAS), pollution evaluation

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