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	Soil solution dynamics of Cu and Zn in a Cu- and Zn-polluted soil as influenced by gamma-irradiation and Cu-Zn interaction
	Luo, YM; Yan, WD; Christie, P
刊名	CHEMOSPHERE
	2001
卷号	42期号:2页码:179-184
关键词	copper metal interaction gamma-irradiation soil moisture sampler soil solution zinc
ISSN号	0045-6535
通讯作者	Luo, YM()
英文摘要	A pot experiment was conducted to study soil solution dynamics of Cu and Zn in a Cu/Zn-polluted soil as influenced by gamma-irradiation and Cu-Zn interaction. A slightly acid sandy loam was amended with Cu and Zn (as nitrates) either singly or in combination (100 mg Cu and 150 mg Zn kg(-1) soil) and was then gamma-irradiated (10 kGy). Unamended and unirradiated controls were included, and spring barley (Hordeum vulgare L. cv. Forrester) was grown for 50 days. Soil solution samples obtained using soil moisture samplers immediately before transplantation and every ten days thereafter were used directly for determination of Cu, Zn, pH and absorbance at 360 nm (A(360)) Cu and Zn concentrations in the solution of metal-polluted soil changed with time and were affected by gamma-irradiation and metal interaction. gamma-Irradiation raised soil solution Cu substantially but generally decreased soil solution Zn. These trends were consistent with increased dissolved organic matter (A(360)) and solution pH after gamma-irradiation. Combined addition of Cu and Zn usually gave higher soil solution concentrations of Cu or Zn compared with single addition of Cu or Zn in gamma-irradiated and non-irradiated soils, indicating an interaction between Cu and Zn. Cu would have been organically complexed and consequently maintained a relatively high concentration in the soil solution under higher pH conditions. Zn tends to occur mainly as free ion forms in the soil solution and is therefore sensitive to changes in pH. The extent to which gamma-irradiation and metal interaction affected solubility and bioavailability of Cu and Zn was a function of time during plant growth. Studies on soil solution metal dynamics provide very useful information for understanding metal mobility and bioavailability. (C) 2000 Elsevier Science Ltd. All rights reserved.
收录类别	ISTP ; SCI
WOS关键词	SEWAGE-SLUDGE ; RHIZOSPHERE ; ZINC ; GROWTH ; COPPER
WOS研究方向	Environmental Sciences & Ecology
WOS类目	Environmental Sciences
语种	英语
出版者	PERGAMON-ELSEVIER SCIENCE LTD
WOS记录号	WOS:000089930600010
内容类型	期刊论文
URI标识	http://www.corc.org.cn/handle/1471x/2559153
专题	南京土壤研究所
通讯作者	Luo, YM
作者单位	1.Chinese Acad Sci, Inst Soil Sci, Lab Mat Cycling Pedosphere, Nanjing 210008, Peoples R China 2.Queens Univ Belfast, Dept Agr & Environm Sci, Belfast BT9 5PX, Antrim, North Ireland
推荐引用方式 GB/T 7714	Luo, YM,Yan, WD,Christie, P. Soil solution dynamics of Cu and Zn in a Cu- and Zn-polluted soil as influenced by gamma-irradiation and Cu-Zn interaction[J]. CHEMOSPHERE,2001,42(2):179-184.
APA	Luo, YM,Yan, WD,&Christie, P.(2001).Soil solution dynamics of Cu and Zn in a Cu- and Zn-polluted soil as influenced by gamma-irradiation and Cu-Zn interaction.CHEMOSPHERE,42(2),179-184.
MLA	Luo, YM,et al."Soil solution dynamics of Cu and Zn in a Cu- and Zn-polluted soil as influenced by gamma-irradiation and Cu-Zn interaction".CHEMOSPHERE 42.2(2001):179-184.

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