关键词: 土壤, 茶叶, 重金属, 土壤污染评价, 乐山市

Abstract: The content of As,Hg,Cu,Cr,Cd and Pb were determined by atomic fluorescence spectrometry and atomic absorption spectrophotometry. Based on "GB15618-1995" of "soil environmental quality standard",the single factor pollution index and comprehensive pollution index were used to evaluate the soil samples in tea plantation. The results showed that the average content of As,Hg,Cu,Cr,Cd,Pb in addition to Cd exceeding the limit of 20%~40%,the other 5 minutes did not exceed the limit of national level 2 soil heavy metal standard, and the single pollution index of As,Hg,Cu,Cr,Pb were less than 1.0,it belongs to the level of security. Based on NY659-2003,NY/T288-2012,the content of As,Hg,Cu,Cr,Cd,Pb of tea samples of raw materialswere obtained in the five sampling point. The contents of 46 samples were much lower than the national standard or issued by the Department of the highest content limit.

Key words: soil, tea, heavy metal, soil pollution evaluation, Leshan