Journal
MARINE POLLUTION BULLETIN
Volume 151, Issue -, Pages -Publisher
PERGAMON-ELSEVIER SCIENCE LTD
DOI: 10.1016/j.marpolbul.2019.110821
Keywords
PAHs; Nonylphenols; Styrene oligomers; Metals and metalloid; In vitro bioassay; Sediments
Funding
- National Research Foundation of Korea (NRF) - Korean government (Ministry of Science and ICT) [2016R1E1A1A01943004, 2017R1E1A1A01075067]
- project entitled Development of Blue Carbon Information System and its Assessment for Management - Ministry of Oceans and Fisheries (MOF), South Korea [20170318]
- Canada Research Chairs Program of the Natural Science and Engineering Research Council (NSERC) of Canada
- Baylor University
- National Research Foundation of Korea [2017R1E1A1A01075067, 2016R1E1A1A01943004] Funding Source: Korea Institute of Science & Technology Information (KISTI), National Science & Technology Information Service (NTIS)
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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.
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