Correlation analysis of heavy metal content in the huai yam and the soil in huai yam planting areas of Wenxian

In order to research the pollution and the correlation of the heavy mental in the huai yam and the Soil of wenxian, we collected 9 huai yam samples, 9 huai yam soil samples and 1 wheat soil sample in the areas, the content of Cu, Cr, Pb, Zn, Ni have been done. The results show that: in 9 huai yam samples,the contamitations of the 5 heavy mental elements are not beyond the standard limits,but the content of Cu, Zn is close to the standard limits; in 9 huai yam soil samples,the contamitations of the 5 heavy mental elements are not beyond the standard limits,the single pollution index maximum of Cu, Cr, Pb, Zn, Mare 0.361, 0.345, 0.597, 0.182, 0.939, the content of Zn is the max of the 5 heavy mental elements,it is 1.41 times of the content in the wheat soil sample, and close to the standard limits, the results of the correlation analysis show that the correlation coefficient of Cu, Zn is 0.916, 0.953,the correlation is obvious, but the correlation coefficient of Cr, Pb, Ni is 0.043, 0.298, 0.128, the correlation is not obvious.