粤东凤凰山区茶园茶叶重金属含量的调查和污染评价  

Investigation and Evaluation of Heavy Metals in Tea of FengHuang Moutain Tea Gardens in East Guangdong Province

作　　者：李张伟[1] 

机构地区：[1]韩山师范学院化学系,广东潮州521041

出　　处：《环境科学与技术》2010年第9期183-186,共4页Environmental Science & Technology

基　　金：广东省教育厅2008年度高校学科建设专项基金项目资助;韩山师范学院青年科研基金项目(413814)

摘　　要：茶叶中的重金属含量是评价茶叶质量的重要指标,文章采用原子吸收分光光度法对粤东凤凰山区11个茶园83个茶叶样品的铜、铬、铅、锰、镍、锌六种重金属元素含量进行测定,并采用单因子污染指数法和综合污染指数法对茶叶重金属元素污染情况进行评价,结果显示,茶叶重金属元素平均含量Mn>Zn>Cu>Cr>Ni>Pb,四种重金属元素的单因子污染指数Cr>Zn>Pb>Cu,11个茶园中重金属综合污染指数均小于1,茶叶对六种重金属元素的富集系数均小于1,富集系数大小Cu>Mn>Zn>Cr>Ni>Pb。结论表明:粤东凤凰山区茶园的茶叶质量总体情况较好,但个别重金属元素存在超标现象,应引起相当注意。The contents of metal elements in tea is a very important index for evaluating the quality of tea. Heavy metal elements as Cu,Cr,Pb,Mn. Ni and Zn in 83 tea samples of the 11 tea gardens in east Guangdong Province were measured by atomic absorption spectrometry.In the same time,the single-factor pollution index and combined pollution index were used for evaluating the influence degree in tea. Result indicated that the contents of heavy metal elements in tea was Mn> Zn>Cu>Cr>Ni>Pb,the single-fa...

关 键 词：茶叶 重金属 凤凰茶园 

分 类 号：X53[环境科学与工程—环境工程]