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《Journal of Gansu Agricultural University》 2005-01
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Analysis of heavy metals pollution in forage grass of white yak in Tianzhu

CHEN Qi-yuan1,YU Qun-li1,SHEN Hui1,HU Xiao-ning2,QU Li2 (1. College of Food Science and Engineering; Gansu Agricultural University, Gansu, Lanzhou 730070; 2. Gansu Disease Controlling and Precaution Center, Gansu, Lanzhou 730000, China)  
The samples were taken from five regions (Tanshanling, Zhuaxixiulong, Songshan, Xidatan and Shimen) in Tianzhu and the heavy metals pollution in forage grass was analyzed.The results showed that Pb, As and Cd in summer-autumn grass satisfied the standard, the order of the general pollution degree was Tanshanling (3.646), Shimen(2.572), Songshan(1.248), Zhuaxixiulong(0.714) and Xidatan(0.588). It existed significant correlation between Pb and As. The grass quality of Tanshiling and Shimen belonged to secondary grade, and rudimental pollution of grass was more. Pb, As and Cd in winner-spring grass didn’t exceed the standard, the order of the general pollution degree was Songshan(2.754),Tanshanling (2.719), Shimen(2.716), Datan(2.568) and Zhuaxixiulong (2.547). It existed low correlation between Pb, As and Cd. The grass quality belongs to secondary grade, and rudimental pollution of grass was more. Pollution in winner and spring grass showed higher than that in summer and autumn.
【Fund】: 科技部攻关项目(No.2002-BA-901A29);; 甘肃省教育厅产学对接项目
【CateGory Index】: S823.85;X173
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