Investigation and Analysis of Heavy Metal Pollution of Banana Soil in Zhangzhou,Fujian Province

By investigating the contents of heavy metals as Cd,Pb,Hg,Cr,Cuand the harmful elements As heavy metal content in banana soil of Zhangzhou,Fujian province,evaluating them by taking the ways of single pollution index and comprehensive pollution index.It shows that,by taking the background value of soil of Fujian as the evaluation standard,soil of some of the banana lands of Zhangzhou are polluted by heavy metals with a pollution order of single pollution index as Hg(1.60)Pb(1.26)Cd(1.07)Cu(0.76)As(0.50) Cr(0.38)and the main pollution elements as Cd,Pb and Hg,of which the pollution of Cd and Hg are moderate pollution;while the comprehensive pollution index is 1.16 that they rank light grade.By taking the second grade standard of soil environmental quality as the evaluation standard,the comprehensive pollution index is 0.34 that they rank non-pollution grade.Different sampling points on heavy metal pollution in a comparative analysis shows the road traffic and garbage and sewage on the banana plantations in the soil are caused by different levels of heavy metal pollution,mainly as Cd,Pb,Hg pollution.