Cadmium in animal production and its potential hazard on Beijing and Fuxin farmlands

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 129.8 mg/kg dry weight and non-detectable to 31 mg/kg dry weight, respectively. The concentrati...

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Bibliographic Details
Published in:Journal of hazardous materials 2010-05, Vol.177 (1), p.475-480
Main Authors: Li, Yan-xia, Xiong, Xiong, Chun-ye, Lin, Feng-song, Zhang, Wei, Li, Wei, Han
Format: Article
Language:English
Subjects:
Agriculture
Agriculture, rearing and food industries wastes
Animal feed
Animal Feed - analysis
Animal manure
Animals
Animals, Domestic
Applied sciences
Cadmium
Cadmium - analysis
Cattle
Chemical engineering
Chickens
China
China city
Decontamination. Miscellaneous
Exact sciences and technology
Manure - analysis
Pollution
Safety
Soil and sediments pollution
Soil pollution
Swine
Wastes
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Summary: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 129.8 mg/kg dry weight and non-detectable to 31 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.
ISSN:0304-3894
1873-3336
DOI:10.1016/j.jhazmat.2009.12.057