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中国农学通报

中国农学通报 ›› 2008, Vol. 24 ›› Issue (10): 487-490.

所属专题： 土壤重金属污染

• 资源 环境 生态 土壤 气象 • 上一篇    下一篇

合肥市售中药材中重金属残留状况研究

李学德   

  • 收稿日期:2008-07-09 修回日期:2008-07-19 出版日期:2008-10-05 发布日期:2008-10-05

Study on Heavy Metals Residues in Chinese Traditional Medicine Materials Sold in Hefei

  • Received:2008-07-09 Revised:2008-07-19 Online:2008-10-05 Published:2008-10-05

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摘要： 本文测定了合肥市售的中药材中重金属镉、铜、铅的含量。结果表明：不同类型中药材中重金属的含量有着显著的差异。Cd的含量从高到低依次为动物类>植物类>矿物类，动物类Cd的含量均值是植物类的3倍多，植物类Cd的含量均值是矿物类的4倍多；Cu的含量从高到低依次为动物类>矿物类>植物类，动物类Cu的含量均值是矿物类的4倍，矿物类与植物类中药材中Cu的含量比较接近；Pb的含量从高到低依次为矿物类>植物类>动物类，矿物类Pb的含量是植物类的近3倍，而植物类Pb的含量又是动物类的2倍多；同一类型不同种中药材中重金属含量差异也很大。污染评价表明，在所检测的中药材中镉的超标率最高，达到25.4%，铅的超标率最低，为7.9%。

关键词: 三峡库区, 三峡库区, 土地开发利用, 潜力分析, 土地生态安全。

Abstract: The concentrations of cadmium (Cd), copper (Cu) and lead (Pb) in Chinese traditional medicine materials sold in Hefei were investigated. The results showed that the concentrations of heavy metals in different kinds of Chinese traditional medicine materials were different. The content order of cadmium was kind of animals> kind of plants> kind of minerals. The average cadmium content in kind of animals were 3 folds than that in kind of plants, while the average cadmium content in plants were 4 folds than that in kind of minerals. The content order of copper was kind of animals> kind of minerals > kind of plants. The average copper content in kind of animals were 4 folds than that in kind of minerals which was close to kind of plants. The content order of lead was kind of minerals > kind of plants > kind of animals. The average lead content in kind of minerals were 3 folds than that in kind of plants which was 2 folds than that in kind of animals. Heavy metals contents in different Chinese traditional medicine materials which belong to same kind varied significantly. The pollution assessment showed that cadmium content in 25.4% of investigated samples exceeded the sanitary standard, while lead content in 7.9% of investigated samples exceeded the sanitary standard.