Determination Of Heavy Metals In Soil, Water And Feed From Beef Cattle Producing Area In Akesu And Yili Prefectures In Xinjiang

The quality of environment is one of the most links for the safety control of animalproduction and its products. The five heavy metals, namely, Arsenic (As), Mercury (Hg),lead (Pb), Cadmium (Cd) and Chromium (Cr) in the soil, water and feed from8beef cattlefarms and their surrounds in Akesu and Yili prefectures, Xinjiang, were detected by the FlowInjection-Hydride Generation-Atomic Absorption Spectrometry (FI-HG-AAS) and Flameatomic absorption spectrometry. The results showed that:(1) the soil in3beef cattle farms inAksu Prefecture was not polluted by As, Hg, Pb and Cr, but the individual Cd pollutioncoefficient PCdwas1.145, exceeding the standard limits. Together that five heavy metals’integrated pollution coefficient P was0.879, which didn’t exceed the national standard limits,but reached to the alerting limit. The soil in5beef cattle farms in Yili Prefecture didn’tpolluted by As, Hg, Pb, Cr, but individual Cd pollution coefficient PCdwas0.742, reaching tothe alerting limit. Together that5heavy metals’ integrated pollution coefficient P was0.728,which didn’t exceed the national standard limit, but reached to the alerting limit. Therefore thesoil environment in8beef cattle farms and their surrounds in these two regions were inaccordance with the specification and requirement for livestock and poultry safety production.(2) the content of As, Cd and Cr in water from3beef cattle farms in Aksu Prefecture was notdetectable, and the individual coefficients PHgand PPbwere0.602and0.162, respectively, andthe5heavy metals’ integrated pollution coefficient P was0.701, which only approached to thelowest standard limit indicating that the water in these3beef cattle farms was notcontaminated; As, Cd, Cr contents from water in5beef cattle farms in Yili Prefecture werenot detectable, the individual coefficient PHgand PPbwere0.378and0.045, respectively, andthe five heavy metals’ integrate coefficient P was0.543suggesting that there nocontamination by5heavy metals in the water from8beef cattle farms in two regions andmeeting the need of the norm and requirements for the livestock and poultry safety production.(3) the individual pollution coefficient PCdin the feed from beef cattle farms in AksuPrefecture reached to3.677,5and5heavy metals’ integrate pollution coefficient was1.558;PCdand PCrin the feed from5beef cattle farms in Yili region were2.318and1.997, and5heavy metals’ integrate pollution coefficient was1.307, surpassing national standard limitindicating the feed was lightly polluted. It is concluded that soil and water were notcontaminated by heavy5metals in8beef cattle farms in both Aksu and Yili regions, howeverfeed was lightly contaminated in both regions. Our investigation provides the basic data forthe establishment of hazards control database for beef production in Xinjiang.