Please use this identifier to cite or link to this item:
http://hdl.handle.net/10397/2577
Title: | Pb contamination and isotopic composition of urban soils in Hong Kong | Authors: | Wong, CSC Li, X |
Issue Date: | 5-Feb-2004 | Source: | Science of the total environment, 5 Feb. 2004, v. 319, no. 1-3, p. 185–195 | Abstract: | In the urban environment, intense human activities can lead to degradation of environmental quality and have potential long-term effects on human health. In the present study, Pb contamination of urban soil cores in Hong Kong was investigated using a combination of the ‘total’ concentration, chemical partitioning and isotopic composition of Pb in the soils. The analytical results showed that urban soil cores in close vicinity to high traffic volumes (>40 000 vehicles per day) were usually contaminated with Pb, suggesting atmospheric deposition of Pb as a consequence of vehicular emissions arising from the combustion of leaded gasoline in the past. Increasing Pb concentrations were generally associated with decreasing [sup 206]Pb/[sup 207]Pb ratios of the contaminated soil cores, offering strong evidence of accumulation of Pb derived from anthropogenic sources. In selected contaminated soil cores, the [sup 206]Pb/[sup 207]Pb ratios tended to increase in the order: carbonate<exchangeable<Fe–Mn oxide<organic<residual fractions. The distribution of the [sup 206]Pb/[sup 207]Pb ratios in the five operationally defined chemical fractions showed that the [sup 206]Pb/[sup 207]Pb ratios generally increased with increasing stability, demonstrating preferential association of anthropogenic Pb with the carbonate, exchangeable, Fe–Mn oxide and organic fractions in the soils. | Keywords: | Pb contamination Pb isotope Chemical partitioning of Pb Urban soils Hong Kong |
Publisher: | Elsevier | Journal: | Science of the total environment | ISSN: | 0048-9697 | EISSN: | 1879-1026 | DOI: | 10.1016/S0048-9697(03)00403-0 | Rights: | Science of the Total Environment © 2003 Elsevier. The journal web site is located at http://www.sciencedirect.com. |
Appears in Collections: | Journal/Magazine Article |
Files in This Item:
File | Description | Size | Format | |
---|---|---|---|---|
B43 EP UrbanSoil 2004.pdf | Pre-published version | 222.16 kB | Adobe PDF | View/Open |
Page views
202
Last Week
0
0
Last month
Citations as of Apr 21, 2024
Downloads
1,177
Citations as of Apr 21, 2024
SCOPUSTM
Citations
120
Last Week
0
0
Last month
1
1
Citations as of Apr 4, 2024
WEB OF SCIENCETM
Citations
110
Last Week
0
0
Last month
1
1
Citations as of Apr 25, 2024
Google ScholarTM
Check
Altmetric
Items in DSpace are protected by copyright, with all rights reserved, unless otherwise indicated.