Journal of Environmental Biology

Characteristics and evaluation on heavy metal contamination in Changchun municipal waste landfill after closure

Zhou Xu-dan, Zhao Chun-li, Qu Tong-bao, Wang Ying, Guo Tai-jun and Sun Xiao-gang*

College of Horticulture, Jilin Agricultural University, Changchun, Jilin Province-130 118, China

*Corresponding Author?s Email : 434451164@qq.com

Publication Data

Paper received:

01 July 2014

Revised received:

01 December 2014

Re-revised received:

01 January 2015

Accepted:

07 February 2015

Abstract

In the present study, comprehensive investigation on the spot and typical investigation method were used to assess Mn, Zn, Pb, Cd, Cr, Ni, As and Cu level, pH value, organic matter, total nitrogen and total phosphorus contents in soil of Changchun municipal waste landfill. The results showed that soil in the closure area of Changchun municipal waste landfill was alkaline in nature and the average value of organic matter, total nitrogen and total phosphorus contents were lower than that in normal black soil in Changchun City of Jilin Province. Single factor indices of As, Pb and Cr content was > 1, where P_As was 1.131, P_Pb 1.061 and P_Cr 1.092 mildly contaminated. In different sample spots but the same landfill time, the comprehensive Nemerow contamination indexes of 7a (5 #) and 7a (2 #) were P_{2 comprehensive} = 1.176 and P_{5 comprehensive} = 1.229. The performance value of of heavy metal contamination in soil was similar and there was a low ecological risk.     

 Key words

Changchun, Contamination index, Heavy metal contamination, Landfill 

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