Heavy metals pollution in poultry and livestock feeds and manures under intensive farming in Jiangsu Province, China.
The heavy metals pollution in poultry and livestock feeds and manures under intensive farming in Jiangsu Province was investigated. 97 feed and manure samples were sampled from 31 farming plants in 10 major cities of Jiangsu. 14 metals, including Zn, Cu, Pb, Cd, Cr, Ni, Mo, Mn, Ba, Co, Sr, Ti, As and Hg, were analyzed after samples acid digestion. The results showed that the most feed samples contained high concentration of metals exceeding National Hygienical Standard for Feeds. Meanwhile, it was found that Cu, Zn, Pb, Cd and Cr concentrations in animal manures were also high, for example, Cu concentration in a manure sample reached to as much as 1726.3 mg/kg. Heavy metals loading quantities in soil per year were then calculated when metals contaminated organic fertilizers were applied, and its effects on soil environmental quality were further evaluated.
Cang
Long
L
State Key Laboratory of Soil and Sustainable Agriculture, Institute of Soil Science, Chinese Academy of Sciences, Nanjing 210008, China.
Wang
Yu-jun
YJ
Zhou
Dong-mei
DM
Dong
Yuan-hua
YH
D000821:Animal Feed; D000818:Animals; D000829:Animals, Domestic; D002681:China; D004785:Environmental Pollutants / Q000032:analysis*; D005506:Food Contamination; D008372:Manure; D019216:Metals, Heavy / Q000032:analysis*; D011200:Poultry
D004785:Environmental Pollutants; D008372:Manure; D019216:Metals, Heavy