论文部分内容阅读
Heavy metal contents of water,feed and manure samples in part poultry farms in Eastern China were investigated. In the survey,49 samples were collected including 16 water samples,24 feed samples and 9 manure samples. The Samples were processed by microwave digestion,the contents of copper( Cu),zinc( Zn),plumbum( Pb),cadmium( Cd) and chromium( Cr) were detected by atomic absorption spectrometry,the contents of arsenic( As) and mercury( Hg)were detected by inductively coupled plasma mass spectrometry( ICP-MS). The Sesults showed that the contents of Cu,Zn,Pb,As,Cd and Cr in water samples were very low,which reached The Standard of Class III Water Quality according to Environmental Quality Standard for Surface Water. The contents of Cr and As in part feed samples exceeded National Hygienical Standard,and the exceeding standard rates of Cr and As reached 33. 3% and 8. 3%,the highest contents of Cr and As were 622. 5 mg / kg and 5. 8 mg / kg respectively. The contents of all the metals in manures were in the range of the standard except Cu. The study suggested that heavy metal pollution existed in a few poultry farms,the contents of Cu,Cr and As in feeds should be controlled.
Heavy metal contents of water, feed and manure samples in part poultry farms in Eastern China were investigated. In the survey, 49 samples were collected including 16 water samples, 24 feed samples and 9 manure samples. The Samples were processed by microwave digestion, the contents of copper (Cu), zinc (Zn), plumbum (Pb), cadmium (Cd) and chromium (Cr) were detected by atomic absorption spectrometry, the contents of arsenic (As) and mercury (Hg) were detected by inductively coupled Plasma mass spectrometry (ICP-MS). The Sesults showed that the contents of Cu, Zn, Pb, As, Cd and Cr in water samples were very low, which reached The Standard of Class III Water Quality according to Environmental Quality Standard for Surface Water. The contents of Cr and As in part feed samples exceeded National Hygienical Standard, and the exceeding standard rates of Cr and As reached 33. 3% and 8.3%, the highest contents of Cr and As were 622. 5 mg / kg and 5. 8 mg / kg respectively. The contents of all the metals in m an study were in the range of the standard except Cu. The study suggested that heavy metal pollution existed in a few poultry farms, the contents of Cu, Cr and As in feeds should be controlled.