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	Concentrations and chemical speciations of Cu, Zn, Pb and Cr of urban soils in Nanjing, China
	Lu, Y; Gong, ZT; Zhang, GL; Burghardt, W
刊名	GEODERMA
	2003-07-01
卷号	115期号:1-2页码:101-111
关键词	heavy metals chemical speciations urban soils Nanjing China
ISSN号	0016-7061
DOI	10.1016/S0016-7061(03)00079-X
通讯作者	Lu, Y()
英文摘要	About 150 soil samples from 20 urban and 3 non-urban soil profiles in Nanjing were analyzed for total concentrations of Cu, Zn, Pb and Cr using ICP spectrometry. The Cu, Zn, Pb and Cr of 23 urban and non-urban topsoils (A horizon soils) were sequentially extracted into 5 fractions according to the method of Tessier [Anal. Chem. 51 (1979) 844]. Total Cu, Zn, Pb and Cr concentrations of the urban soils were 84.7 (48.1-139.7), 66.1 (12.2-869.4), 162.6 (57.7-851.6) and 107.3 (36.3-472.6) mg kg(-1) respectively. The soils were polluted with Cu, Zn and Cr to some extent and heavily polluted with Pb. For 20 urban topsoils, the Cu, Zn, Pb and Cr were dominated by the residual fraction and were least present in exchangeable fraction. On average, the order of Cr, Cu in each fraction was residual (92.9%, 66.1%) much greater than organic (4.2%, 23.4%)>Fe-Mn oxide (2.7%, 5.4%)>carbonate (0.2%, 4.7%)>exchangeable (0.04%, 0.38%), Zn followed the order residual (60.0%)much greater thanFe-Mn oxides (19.1%)>carbonate (11.6%)>organic (8.8%)>exchangeable (0.5%), Pb was residual (56.8%)>Fe-Mn oxide (30.9%)much greater thanorganic (6.3%)>carbonate (5.2%)>exchangeable (0.8%). The percentage of residual Cu and Zn decreased with the increase of total Cu and Zn concentrations. The proportion of residual Pb increased with the increase of total P. The mobility and bioavailability of heavy metals were Pb>Zn>Cu>Cr. Cu, Zn and Pb were more mobile and bioavailable in the urban than in the non-urban soils; however, Cr was similar. (C) 2003 Elsevier Science B.V. All rights reserved.
收录类别	SCI
WOS关键词	HEAVY-METALS ; HONG-KONG ; CONTAMINATION ; DUSTS ; FRACTIONATION ; EXTRACTION ; CADMIUM ; COPPER ; LEAD ; ZINC
WOS研究方向	Agriculture
WOS类目	Soil Science
语种	英语
出版者	ELSEVIER SCIENCE BV
WOS记录号	WOS:000183271700010
内容类型	期刊论文
URI标识	http://www.corc.org.cn/handle/1471x/2559231
专题	南京土壤研究所
通讯作者	Lu, Y
作者单位	1.S China Agr Univ, Coll Resources & Environm Sci, Guangzhou 510642, Peoples R China 2.Acad Sinica, Inst Soil Sci, Nanjing 210008, Peoples R China 3.Univ Essen Gesamthsch, Dept Appl Soil Sci, D-45141 Essen, Germany
推荐引用方式 GB/T 7714	Lu, Y,Gong, ZT,Zhang, GL,et al. Concentrations and chemical speciations of Cu, Zn, Pb and Cr of urban soils in Nanjing, China[J]. GEODERMA,2003,115(1-2):101-111.
APA	Lu, Y,Gong, ZT,Zhang, GL,&Burghardt, W.(2003).Concentrations and chemical speciations of Cu, Zn, Pb and Cr of urban soils in Nanjing, China.GEODERMA,115(1-2),101-111.
MLA	Lu, Y,et al."Concentrations and chemical speciations of Cu, Zn, Pb and Cr of urban soils in Nanjing, China".GEODERMA 115.1-2(2003):101-111.

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