Effects of EDTA and low molecular weight organic acids on soil solution properties of a heavy metal polluted soil

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	Effects of EDTA and low molecular weight organic acids on soil solution properties of a heavy metal polluted soil
	Wu, LH; Luo, YM; Christie, P; Wong, MH; Luo, YM, Chinese Acad Sci, Inst Soil Sci, POB 821, Nanjing 210008, Peoples R China
刊名	CHEMOSPHERE
	2003
卷号	50 期号:6 页码:819-822
关键词	Edta Low Molecular Weight Organic Acids Soil Solution Toc Metals
ISSN号	0045-6535
英文摘要	A pot experiment was conducted to study the effects of EDTA and low molecular weight organic acids (LMWOA) on the pH, total organic carbon (TOC) and heavy metals in the soil solution in the rhizosphere of Brassica juncea grown in a paddy soil contaminated with Cu, Zn, Pb and Cd. The results show that EDTA and LMWOA have no effect on the soil solution pH. EDTA addition significantly increased the TOC concentrations in the soil solution. The TOC concentrations in treatments with EDTA were significantly higher than those in treatments with LMWOA. Adding 3 mmol kg(-1) EDTA to the soil markedly increased the total concentrations of Cu, Zn, Pb and Cd in the soil solution. Compared to EDTA, LMWOA had a very small effect on the metal concentrations. Total concentrations in the soil solution followed the sequence: EDTA much greater than citric acid (CA) approximate to oxalic acid (OA) approximate to malic acid (MA) for Cu and Pb; EDTA much greater than MA much greater than CA much greater than OA for Zn; and EDTA much greater than MA much greater than CA > OA for Cd. The labile concentrations of Cu, Zn, Pb and Cd showed similar trends to the total concentrations. (C) 2002 Elsevier Science Ltd. All rights reserved.
学科主题	Environmental Sciences
语种	英语
WOS记录号	WOS:000180082200023
公开日期	2011-09-23
内容类型	期刊论文
源URL	[http://210.72.129.5/handle/321005/55431]
专题	沈阳应用生态研究所_沈阳应用生态研究所
通讯作者	Luo, YM, Chinese Acad Sci, Inst Soil Sci, POB 821, Nanjing 210008, Peoples R China
推荐引用方式 GB/T 7714	Wu, LH,Luo, YM,Christie, P,et al. Effects of EDTA and low molecular weight organic acids on soil solution properties of a heavy metal polluted soil[J]. CHEMOSPHERE,2003,50(6):819-822.
APA	Wu, LH,Luo, YM,Christie, P,Wong, MH,&Luo, YM, Chinese Acad Sci, Inst Soil Sci, POB 821, Nanjing 210008, Peoples R China.(2003).Effects of EDTA and low molecular weight organic acids on soil solution properties of a heavy metal polluted soil.CHEMOSPHERE,50(6),819-822.
MLA	Wu, LH,et al."Effects of EDTA and low molecular weight organic acids on soil solution properties of a heavy metal polluted soil".CHEMOSPHERE 50.6(2003):819-822.