摘要
稀土是近年来我国茶叶质量安全问题中的热点,关于茶叶稀土元素限量标准引起各界争论。茶树对轻稀土(La,Ce,Y和Nd等)具有较强的生物富集作用,其中茶树叶片中的稀土含量与生长期呈显著的正相关。本文简要概述了稀土元素的类别、毒理学研究进展和茶叶中稀土含量现状及溶出规律,并对茶叶中稀土元素的来源进行初步的分析。探讨了限量标准,为今后科学制定茶叶中稀土的限量标准,加强对茶叶监管提供参考。
The rare earth is a hotspot among the problems of tea quality and safety in recent years in china,and its limitation standard aroused controversy. Tea plant has an enrichment impact on light rare earth element（ La,Ce,Y and Nd,etc.）,and there is a significant positive correlation between growing of tea leaves and total rare earth content. The types of rare earth elements,progress of toxicology research,the residue status and the leaching characteristics in tea were briefly outlined,the source of rare earth elements in tea was investigated preliminarily. The limitation standard of rare earth in tea was explored,which provided a reference for scientifically formulate the limitation standard of rare earth in tea,strengthened supervision in the future.
出处
《广州化工》
CAS
2015年第21期13-15,33,共4页
GuangZhou Chemical Industry
基金
浙江省青年基金项目(LQ15C160006)
浙江省分析测试基金(2014C37041)
现代农业产业技术体系建设专项基金(nycytx-26)
关键词
茶叶
稀土
毒理学
溶出率
来源
限量
tea
rare earth elements
dissolution rate
source
limit
