Please use this identifier to cite or link to this item:
http://hdl.handle.net/10397/2579
Title: | The spatial and temporal distribution of heavy metals in sediments of Victoria Harbour, Hong Kong | Authors: | Tang, WYC Ip, CM Zhang, G Shin, PKS Qian, PY Li, X |
Issue Date: | 2008 | Source: | Marine pollution bulletin, 2008, v. 57, no. 6-12, p. 816–825 | Abstract: | Victoria Harbour has received substantial loadings of pollutants from industrial and municipal wastewater discharged since the 1950s. Inputs of contaminants have declined dramatically during the last two decades as a result of better controls at the source and improved wastewater treatment facilities. To assess the spatial and temporal changes of metal contaminants in sediments in Victoria Harbour, core and grab sediments were collected. The central harbour areas were generally contaminated with heavy metals. The spatial distribution of trace metals can probably be attributed to the proximity of major urban and industrial discharge points, and to the effect of tidal flushing in the harbour. In the sediment cores, the highest concentrations of trace metals were observed to have accumulated during the 1950s–1980s, corresponding with the period of rapid urban and industrial development in Hong Kong. From the late 1980s, there has been a major decline in the concentrations of trace metals, due to a reduction in industrial activities and to the enactment of wastewater pollution controls in the territory. The Pb isotopic compositions of the sediments revealed the anthropogenic inputs of Pb to the harbour. The [sup 206]Pb/[sup 207]Pb ratios varied from 1.154 to 1.190, which were lower than those of background geological materials in Hong Kong ([sup 206]Pb/[sup 207]Pb: 1.201–1.279). The data also indicated that the Pb in the harbour sediments most likely originated from mixed sources, including the leaded gasoline used in the past and other anthropogenic sources. | Keywords: | Trace metals Pb isotopes Sediment Historical sources Victoria Harbour Hong Kong |
Publisher: | Pergamon Press | Journal: | Marine pollution bulletin | ISSN: | 0025-326X | DOI: | 10.1016/j.marpolbul.2008.01.027 | Rights: | Marine Pollution Bulletin © 2008 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 | |
---|---|---|---|---|
B56 Victoria Sediment MPB 2008.pdf | Pre-published version | 381.4 kB | Adobe PDF | View/Open |
Page views
187
Last Week
1
1
Last month
Citations as of Apr 21, 2024
Downloads
385
Citations as of Apr 21, 2024
SCOPUSTM
Citations
68
Last Week
1
1
Last month
3
3
Citations as of Apr 5, 2024
WEB OF SCIENCETM
Citations
62
Last Week
0
0
Last month
3
3
Citations as of Apr 25, 2024
Google ScholarTM
Check
Altmetric
Items in DSpace are protected by copyright, with all rights reserved, unless otherwise indicated.