| Author: | Chung, Wai-keung |
| Title: | Metal pollution in sediments of Shing Mun River in Hong Kong |
| Degree: | M.Sc. |
| Year: | 1997 |
| Subject: | Water -- Pollution -- China -- Hong Kong Metals -- Environmental aspects Shing Mun River (Hong Kong) Hong Kong Polytechnic University -- Dissertations |
| Department: | Multi-disciplinary Studies |
| Pages: | 71, [4] leaves : ill. ; 30 cm |
| Language: | English |
| Abstract: | Shing Mun River and it's tributaries were heavily polluted by unauthorized industrial and domestic discharges before 1987. With the implementation of Water Pollution Control Ordinances by the local environmental authority in 1987, there has been general improvement in the water quality which was reflected by the Water Quality Index (WQI). However, monitoring data revealed that the concentrations of heavy metals remained high over the years. In this study, sediment samples were collected at eight strategic locations along the river system. The samples were digested and analyzed for Al, Cd, Cr, Cu , Pb and Zn. Results indicated that the sediments of the river system, which acted as a sink for heavy metals during the decade before 1987, has turned into a source of heavy metals to the overlying water. Release of heavy metals by the sediment rendered the WQI in terms of heavy metals to remain poor even after a decade of effort to eliminate illegal discharges. Sediment rehabilitation by dredging may be required as a remedial option. |
| Rights: | All rights reserved |
| Access: | restricted access |
Files in This Item:
| File | Description | Size | Format | |
|---|---|---|---|---|
| b14033331.pdf | For All Users (off-campus access for PolyU Staff & Students only) | 3.61 MB | Adobe PDF | View/Open |
Copyright Undertaking
As a bona fide Library user, I declare that:
- I will abide by the rules and legal ordinances governing copyright regarding the use of the Database.
- I will use the Database for the purpose of my research or private study only and not for circulation or further reproduction or any other purpose.
- I agree to indemnify and hold the University harmless from and against any loss, damage, cost, liability or expenses arising from copyright infringement or unauthorized usage.
By downloading any item(s) listed above, you acknowledge that you have read and understood the copyright undertaking as stated above, and agree to be bound by all of its terms.
Please use this identifier to cite or link to this item:
https://theses.lib.polyu.edu.hk/handle/200/5076