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Mar. Pollut. Bull., Volume 151, February 2020, 110821 | https://doi.org/10.1016/j.marpolbul.2019.110821 Long-term trends of persistent toxic substances and potential toxicities in sediments along the west coast of South Korea

Abstract

Seonju Kim^a, Seongjin Hong^b,*, Junghyun Lee^a, Taewoo Kim^a, Seo Joon Yoon^a, Jongmin Lee^a, Kyungsik Choi^a, Bong-Oh Kwon^a, John P. Giesy^c,d,e, Jong Seong Khim^a,*

^aSchool of Earth and Environmental Sciences & Research Institute of Oceanography, Seoul National University, Seoul 08826, Republic of Korea
^b Department of Ocean Environmental Sciences, Chungnam National University, Daejeon 34134, Republic of Korea
^c Department of Veterinary Biomedical Sciences & Toxicology Centre, University of Saskatchewan, Saskatoon, SK S7N5B3, Canada
^d Department of Environmental Sciences, Baylor University, Waco, TX 76706, United States
^e Department of Zoology and Center for Integrative Toxicology, Michigan State University, East Lansing, MI 48824, United States

^*Corresponding authors : Seongjin Hong, Jong Seong Khim

Abstract
For decades, in response to industrialization and urbanization, environmental qualities of estuarine and coastal areas of the west coast of Korea have been deteriorating. Long-term changes in concentrations of persistent toxic substances (PTSs) in sediments, including PAHs, styrene oligomers, nonylphenols, and metals and their potential toxicities via AhR- and ER-mediated potencies, and bioluminescent bacterial inhibition, were investigated. Long-term monitoring in five estuarine and coastal areas (2010–2018; 10 sites) showed that concentrations of PAHs and nonylphenols in sediments have declined while concentrations of some metals, Cd, Cr, and Hg have increased. Similarly, AhR-mediated potencies in sediments have declined, but inhibitions of bioluminescent bacteria have increased. Concentrations of sedimentary PAHs and AhR-mediated potencies were significantly (p < 0.01) and positively correlated. Sources of PAHs from combustion have been gradually declining while inputs from vehicle exhaust by-products have been increasing. Overall, this study brought our attention a balanced regulation in chemical-specific manner.

Keywords
PAHs; Nonylphenols; Styrene oligomers; Metals and metalloid; In vitro bioassay; Sediments

논문정보

형식Research article
게재일2020년 02월 (BRIC 등록일 2020-03-09)
연구진국내(교신)+국외 연구진
분야 생명과학 > 분류/생태/환경생물학
구분구・농수식품

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