| 腐殖酸对污灌土壤中Cu、Cd、Pb、Zn形态影响的研究 |
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| 引用本文： | 蒋煜峰,袁建梅,卢子扬,王爱萍,陈慧.腐殖酸对污灌土壤中Cu、Cd、Pb、Zn形态影响的研究[J].西北师范大学学报,2005,41(6):42-46. |
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| 作者姓名： | 蒋煜峰 袁建梅 卢子扬 王爱萍 陈慧 |
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| 作者单位： | 西北师范大学化学化工学院 甘肃兰州730070
(蒋煜峰，袁建梅)，甘肃省环境科学设计研究院 甘肃兰州730000
(卢子扬，王爱萍)，西北师范大学化学化工学院 甘肃兰州730070(陈慧) |
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| 基金项目： | 甘肃省自然科学基金资助项目(3ZS041-A25-027)，甘肃省环保局基金资助项目(GH2003-4) |
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| 摘 要： | 选用白银地区污灌土壤为供试样品,在土样中分别加入腐殖酸、EDTA、柠檬酸三钠和乙酸,采用连续浸提法对比研究了外源腐殖酸对污灌土壤中有毒重金属不同形态的影响.实验结果表明,在污灌土壤中添加腐殖酸可改变土壤对重金属不同形态的吸持能力,使具有直接生物毒性的重金属可溶态急剧减少60%~80%,重金属氧化物结合态、碳酸盐结合态及有机结合态增加,从而降低重金属在土壤中的流动性、活性和生物可利用性.
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| 关 键 词： | 重金属 腐殖酸 污灌土壤 连续浸提法 |
| 文章编号： | 1001-988X（2005）06-0042-05 |
| 收稿时间： | 2004-11-01 |
| 修稿时间： | 2005-03-11 |
The effect of humic acid on species of Cu,Cd,Pb,Zn in sewage farm |
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| JIANG Yu-feng, YUAN Jian-mei, LU Zi-yang, WANG Ai-ping, CHEN Hui.The effect of humic acid on species of Cu,Cd,Pb,Zn in sewage farm[J].Journal of Northwest Normal University Natural Science (Bimonthly),2005,41(6):42-46. |
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| Authors: | JIANG Yu-feng YUAN Jian-mei LU Zi-yang WANG Ai-ping CHEN Hui |
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| Institution: | 1. College of Chemistry and Chemical Engineering, Northwest Normal University, Lanzhou 730070, Gansu, China; 2. Environmental Science Institute of Gansu Province, Lanzhou 730000, Gansu, China |
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| Abstract: | To investigate the effects of humic acid on the speciations of heavy metals,such as Cu,Pb,Zn and Cd in sewage farm in Baiyin Prefecture,four kinds of organic matters including humic acid,EDTA,citric acid and acetic acid were added,respectively,in polluted soil with a method of successive extraction performed to determine the species of heavy metals.The results show that humic acid could remarkably decrease the content of soluble heavy metals with about 60%~80%,while increase the fractions of Fe Al MnO_x and carbonate,which demonstrated clearly that huimc substance,under certain conditions,could effectively increase the resistance to bioavailability and toxicity of heavy metals in sewage farm. |
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| Keywords: | heavy metal humic acid sewage farm successive extraction method |
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