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《Journal of Agricultural University of Hebei》 2009-01
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Study on remediation of the soil contaminated with Cadmium by applying four minerals

LV Lin-lin,JIN Mei-yu,LI Bo-wen,XIE Jian-zhi (College of Resources and Environmental Sciences,Agricultural University of Hebei,Baoding 071000,China)  
Effects of in situ immobilization by applying 4 materials were systematically studied to remedy Cd contaminated soil in pot experiment with rape as indicator plant.The minerals of Na-modified bentonite,bentonite,zeolite and diatomite were used in the experiment.The results showed that when the added amount of Na-modified bentonite,bentonite,zeolite and diatomite was 20,30,50,40 g/kg respectively,the effective Cd content of soil reached the corresponding minimum concentration separately and reduced by 21.40%,27.63%,27.24%,32.30% respectvely compared with the control;suitable range for adding these mineral materials was 30-40 g/kg and able to decrease at least 15% of Cd contents absorbed by rape;4 mineral materials could inhibit rape absorbing Cd by decreasing bioavailability of Cd,and increasing pH in the Cd contaminated soil.
【Fund】: 河北省自然基金资助项目(C2007000459)
【CateGory Index】: X53
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