西南地区绿茶产品质量及其污染状况评价

Analysis and evaluation of the quality of the green tea and the BHC, DDT, lead pollution in green tea in southwest China

对１９９８年西南地区 ４４个绿茶产品检测结果统计分析表明，有４３个产品符合国家标准 ＧＢ／Ｔ１４４５６— ９３的规定，合格率 ９７． ７％。对照国家标准和绿色食品标准，对影响绿茶产品质量的卫生指标六六六、滴滴涕残留量和重金属铅含量进行了分析评价。结果表明，六六六和滴滴涕在绿茶中的平均检出率为 ２０． ５％和 ３４． １％；绿茶中铅含量依次为四川＞重庆＞贵州＞云南。结合地理特点和环境状况分析，造成四川绿茶中钻含量偏高的原因，是空气飘尘中铅的含量偏高，且不易扩散沉积所致。

In 1998, 44 samples of green tea from southwest China were tested and the quality was analysed. The results showed that the qualitied rates of the samples was 97 .7% according to GB/T14456 - 93, But the detected rates of BHC and DDT were 20. 5 % and 34. 1 %, respectively, and the order of lead detected value was Sichuan's > Chongqing's > Guizhou's > Yunnan's. This paper analysed the reason of high BHC and DDT contents in green tea, and made a comparison between Sichuan and Yunnan for lead in green tea.