Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
580886 | Journal of Hazardous Materials | 2010 | 6 Pages |
Abstract
A random sample of pairs of animal feeds and manures were collected from 215 animal barns in Beijing and Fuxin regions of China. The concentrations of Cd in manures and feeds ranged from non-detectable to 129.8Â mg/kg dry weight and non-detectable to 31Â mg/kg dry weight, respectively. The concentrations of Cd in pig, dairy cow and chicken manures were positively correlated to those in their feeds. About 30% of the manure samples contained Cd concentrations higher than the upper limit for use in farmlands, and pig and chicken manures might be the primary contributors of Cd to farmlands. The farmlands in Beijing and around the Fuxin Downtown areas would exceed the soil quality criteria within several decades according to current manure Cd loading rates. Undoubtedly, more scientific animal production and manure management practices to minimize soil pollution risks are necessary for the two regions.
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Authors
Li Yan-xia, Xiong Xiong, Lin Chun-ye, Zhang Feng-song, Li Wei, Han Wei,