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Comparative Analysis of Changes of Pollutants in Sediment in Nanjing Xuanwu Lake Before and After Sediment Dredging(PDF)

南京师范大学学报（工程技术版）[ISSN:1006-6977/CN:61-1281/TN]

Issue:
2004年02期
Page:
66-69
Research Field:
Publishing date:

Info

Title:
Comparative Analysis of Changes of Pollutants in Sediment in Nanjing Xuanwu Lake Before and After Sediment Dredging
Author(s):
ZHU Min 1;  WANG Guoxiang 1;  WANG Jian 1;  CHEN Can 2
1.School of Geographic Science, Nanjing Normal University, Nanjing 210097, China;2.School of Forestry, Guangxi University, Nanning 530004, China
Keywords:
dredging ;  sediment ;  total nitrogen ;  total phosphorus ;  heavy mental ;  Xuanwu lake
PACS:
X824
DOI:
-
Abstract:
The sediment dredging was conducted for decreasing the pollution load and controlling the eutrophication in Xuanwu Lake in 1998. The monitoring results of total nitrogen (TN) , total phosphorus (TP) and heavy metals in sediment were used to assess the effect of the dredging. Compared with 1998 , TP content of the sediment decreased slightly in 1999 , but increased in 2000. A continuous increase of TN content in sediment took place after dredging. At the same time , the pollution loading of heavy metals , such as Hg , Cu , Pb , Cd , Cr , has been rising since 1998. Especially , in 2000 Hg content in Northwestern part of Xuanwu Lake was 36 times as much as that in 1997 (before dredging) .

References:

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Last Update: 2013-04-29