시화호 및 주변 하천 표층 퇴적물의 중금속 분포 변화 SCOPUS KCI

Title
시화호 및 주변 하천 표층 퇴적물의 중금속 분포 변화
Alternative Title
Change of Heavy Metals in the Surface Sediments of the Lake Sihwa and Its Tributaries
Author(s)
김경태; 김은수; 조성록; 박준건; 박청길
KIOST Author(s)
Kim, Kyung Tae(김경태)Cho, Sung Rok(조성록)
Publication Year
2003-12
Abstract
In order to understand the distribution of changes of geochemical characteristics in surface sediments according to various environmental changes around the artificial Lake Sihwa, surface sediments were sampled at 13~15 sites form 1997 to 1999 and analyzed by C/S analyzer, ICP/MS and AAS. The average S/Corg ratio was 0.35 in the surface sediments, which is similar to 0.36, the characteristic ratio of marine sediments. Heavy metal contents and enrichment factors in the surface sediments tended to be decreasing from the head to the mouth of the Lake Sihwa. With the deposition of fine-grained sediments in the central part of lake, anoxic water column induced the sulfides compounds with Cu, Cd and Zn. Metals such as Al, Fe, Cr, Co, Ni, Cu, Zn and Cd except for Mn and Pb showed relatively high correlation coefficients among them. The contents of Cr, Co, Ni, Cu, Zn and Cd in the surface sediments of the lake were two to five times higher than those in the lake before dike construction and also in outer part of the dike. These are mainly due to the input of untreated industrial and municipal waste-waters into the lake, and the accumulation of heavy metals by limitation of physical mixing. Although metal contents of the surface sediments at the sites near the water-gate due to outer seawater inflow tended to be lower than those during the desalination, heavy metals were deposited in areas around the new industrial complex in the evidence of spatial distribution of heavy metals in the sediments. This is mainly due to the input of untreated waste-waters from tributaries.
ISSN
1598-141X
URI
https://sciwatch.kiost.ac.kr/handle/2020.kiost/5408
Bibliographic Citation
Ocean and Polar Research, v.25, no.4, pp.447 - 457, 2003
Publisher
한국해양과학기술원
Keywords
인공호수; 시화호; 표층퇴적물; 중금속; artificial lake; Lake Sihwa; surface sediment; heavy metal
Type
Article
Publisher
한국해양과학기술원
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