凹凸棒石复配纳米超微功能材料对土壤重金属的钝化效果  

Passivation Effect of Attapulgite Composite Nano Super Functional Materials on Soil Heavy Metals

作　　者：陈振虎 刘恬 陈馨 妙旭华 王玉鹏 蔺海明 杜松 魏公河 CHEN Zhenhu;LIU Tian;CHEN Xin;MIAO Xuhua;WANG Yupeng;LIN Haiming;DU Song;WEI Gonghe(Gansu Western Attapulgite Application Research Institute,Baiyin Gansu 730900,China;Gansu Attapulgite Engineering Technology Research Center,Baiyin Gansu 730900,China;State Key Laboratory for Effective Utilization of Chemical Resources,Beijing University of Chemical Technology,Chaoyang District,Beijing 100029,China;Gansu Institute of Ecological and Environmental Science,Lanzhou Gansu 730000,China;Gansu Liangxing Attapulgite Application Co.,LTD.,Baiyin Gansu 730900,China;Gansu Attapulgite Mineral Resources Comprehensive Utilization Engineering Research Center,Baiyin Gansu 730900,China;Shandong Wanxin Weina Material Science and Technology Co.Ltd.,Linyi Shandong 276000,China)

机构地区：[1]甘肃西部凹凸棒石应用研究院,甘肃白银730900 [2]甘肃省凹凸棒石工程技术研究中心,甘肃白银730900 [3]北京化工大学化工资源有效利用国家重点实验室,北京100029 [4]甘肃省生态环境科学设计研究院,甘肃兰州730000 [5]甘肃良兴凹凸棒石应用有限公司,甘肃白银730900 [6]甘肃省凹凸棒石矿产资源综合利用工程研究中心,甘肃白银730900 [7]山东万新威纳材料科技有限公司,山东临沂276000

出　　处：《甘肃农业科技》2020年第7期32-37,共6页Gansu Agricultural Science and Technology

基　　金：2019年中央土壤污染防治专项资金投资计划项目“农用地土壤污染治理与修复试点项目”。

摘　　要：在白银市白银区大田条件下,以苦荞麦为指示作物,以凹凸棒石粉和纳米超微功能材料为试材,研究了凹凸棒石粉复配纳米超微功能材料对土壤重金属钝化效果。结果表明,试验农田空白土壤中,Pb和Cd含量分别为300.7 mg/kg、24.36 mg/kg;施加凹凸棒石粉3000 kg/hm^2复配纳米超微功能材料3000 kg/hm^2时,土壤中重金属的有效态降低幅度最大,对重金属的钝化效果明显,Pb的降低率达到了50.0%。施加凹凸棒石粉复配纳米超微功能材料或单独施加凹凸棒石粉后,荞麦中重金属的吸收量均明显少于对照不添加任何材料,且凹凸棒石粉复配纳米超微功能材料对重金属的钝化效果明显优于单独施加凹凸棒石粉。With tartary buckwheat as the indicator crop and attapulgite powder and nanometer ultramicro functional materials as the test materials,the passivation effect of attapulgite powder combined with nanometer and ultrafine functional materials on soil heavy metals was studied in baiyin district of Baiyin City.The results showed that the contents of Pb and Cd in the blank soil of the test farmland were 300.7 mg/kg and 24.36 mg/kg respectively;when attapulgite 3000 kg/hm^2,composite nano ultra functional material 3000 kg/hm^2 was applied,the effective state of heavy metals in the soil decreased the most,the passivation effect on heavy metals was obvious,and the reduction rate of Pb reached 50.0%.After applying attapulgite combined with nanometer and ultramicro functional materials or applying attapulgite alone,the absorption of heavy metals in buckwheat was significantly lower than that of the control without adding any materials,and the passivation effect of attapulgite combined with nanometer and ultramicro functional materials was obviously better than that of attapulgite applied alone and the control.

关 键 词：凹凸棒石粉 纳米超微功能材料 土壤重金属 钝化 

分 类 号：S156[农业科学—土壤学]