Organic matter and heavy metal in river sediments of southwestern coastal Korea: Spatial distributions, pollution, and ecological risk assessment.

Autor: Yang HJ; Yeongsan River Environment Research Center, National Institute of Environmental Research, Gwangju 61011, Republic of Korea., Jeong HJ; Yeongsan River Environment Research Center, National Institute of Environmental Research, Gwangju 61011, Republic of Korea., Bong KM; Yeongsan River Environment Research Center, National Institute of Environmental Research, Gwangju 61011, Republic of Korea., Jin DR; Water Environmental Engineering Research Division, National Institute of Environmental Research, Incheon 22689, Republic of Korea., Kang TW; Yeongsan River Environment Research Center, National Institute of Environmental Research, Gwangju 61011, Republic of Korea. Electronic address: kangtw@korea.kr., Ryu HS; Yeongsan River Environment Research Center, National Institute of Environmental Research, Gwangju 61011, Republic of Korea., Han JH; Yeongsan River Environment Research Center, National Institute of Environmental Research, Gwangju 61011, Republic of Korea., Yang WJ; Yeongsan River Environment Research Center, National Institute of Environmental Research, Gwangju 61011, Republic of Korea., Jung H; Yeongsan River Environment Research Center, National Institute of Environmental Research, Gwangju 61011, Republic of Korea., Hwang SH; Yeongsan River Environment Research Center, National Institute of Environmental Research, Gwangju 61011, Republic of Korea., Na EH; Yeongsan River Environment Research Center, National Institute of Environmental Research, Gwangju 61011, Republic of Korea.
Jazyk: angličtina
Zdroj: Marine pollution bulletin [Mar Pollut Bull] 2020 Oct; Vol. 159, pp. 111466. Date of Electronic Publication: 2020 Jul 24.
DOI: 10.1016/j.marpolbul.2020.111466
Abstrakt: This study identifies the impact of river sediments on coastal ecosystems in the southwestern coastal region of Korea. Surface sediments were analyzed for their spatial distributions of organic matter, nutrients, and heavy metal concentrations. Furthermore, pollutants were identified according to the pollution load index (PLI) and potential ecological risk index (RI). Concentrations did not show serious pollution levels compared to generalized guidelines; however, some sites exceeded the PLI pollution standard, and were also identified as potential ecological risks. Through cluster analyses the sediment sites were classified into three groups: rivers with relatively high concentrations of organic matter and nutrients, rivers affected largely by artificial heavy metal pollution, and rivers with low levels of pollution by organic matter, nutrients, and heavy metals. It is evident that continuous monitoring and management are required to prevent major pollution from industrial complexes, agriculture, and commercial activities in the regions near these rivers.
(Copyright © 2020 Elsevier Ltd. All rights reserved.)
Databáze: MEDLINE
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