Factors determining contamination and time trends in cyclic and linear siloxanes in sediments from an industrialized lake in Korea

Siloxanes, widely used in various consumer and industrial products, are emerging concerns of contaminants. Despite this, limited studies have been conducted on contamination and time trends on siloxanes in coastal environments. In the present study, four cyclic and 15 linear siloxanes were measured...

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Main Authors: Yujin Kang, Sunggyu Lee, Wenming Chen, Hyo-Bang Moon
Format: Article
Language:English
Published: Elsevier 2024-01-01
Series:Ecotoxicology and Environmental Safety
Subjects:
Online Access:http://www.sciencedirect.com/science/article/pii/S0147651323013210
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author Yujin Kang
Sunggyu Lee
Wenming Chen
Hyo-Bang Moon
author_facet Yujin Kang
Sunggyu Lee
Wenming Chen
Hyo-Bang Moon
author_sort Yujin Kang
collection DOAJ
description Siloxanes, widely used in various consumer and industrial products, are emerging concerns of contaminants. Despite this, limited studies have been conducted on contamination and time trends on siloxanes in coastal environments. In the present study, four cyclic and 15 linear siloxanes were measured in sediments collected from an artificial saltwater lake in Korea during 2001–2016 to investigate contamination, time trends, and ecotoxicological concerns. Cyclic siloxanes were detected in all sediment samples, whereas linear siloxanes were not frequently detected. The highest siloxane concentrations were observed in creeks passing through various industrial complexes, indicating that industrial activities predominantly contributed to siloxane contamination in coastal environments. Decamethylcyclopentasiloxane (D5) and dodecylcyclohexasiloxane (D6) were predominant siloxanes in sediments over the last two decades. Siloxane concentrations significantly increased in creek sediments from 2008 to 2016, whereas those in inshore and offshore regions significantly decreased due to a strong dilution effect by the operation of tidal power plant. This suggests that consumption patterns and coastal development activities are crucial factors determining the contamination and time trends in the sedimentary siloxanes. The sedimentary concentrations of octamethylcyclotetrasiloxane (D4) and D5 exceeded several thresholds, raising the potentials for ecological risks to aquatic organisms.
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spelling doaj.art-a883d2df8aa9456a96020175bfecf9ce2023-12-17T06:37:11ZengElsevierEcotoxicology and Environmental Safety0147-65132024-01-01269115817Factors determining contamination and time trends in cyclic and linear siloxanes in sediments from an industrialized lake in KoreaYujin Kang0Sunggyu Lee1Wenming Chen2Hyo-Bang Moon3Department of Marine Science and Convergence Engineering, College of Science and Convergence Technology, Hanyang University, Ansan 15588, Republic of KoreaDepartment of Marine Science and Convergence Engineering, College of Science and Convergence Technology, Hanyang University, Ansan 15588, Republic of KoreaMinistry of Education Key Laboratory for Ecology of Tropical Islands, Key Laboratory of Tropical Animal and Plant Ecology of Hainan Province, College of Life Sciences, Hainan Normal University, Haikou, Hainan 571158, ChinaDepartment of Marine Science and Convergence Engineering, College of Science and Convergence Technology, Hanyang University, Ansan 15588, Republic of Korea; Corresponding author.Siloxanes, widely used in various consumer and industrial products, are emerging concerns of contaminants. Despite this, limited studies have been conducted on contamination and time trends on siloxanes in coastal environments. In the present study, four cyclic and 15 linear siloxanes were measured in sediments collected from an artificial saltwater lake in Korea during 2001–2016 to investigate contamination, time trends, and ecotoxicological concerns. Cyclic siloxanes were detected in all sediment samples, whereas linear siloxanes were not frequently detected. The highest siloxane concentrations were observed in creeks passing through various industrial complexes, indicating that industrial activities predominantly contributed to siloxane contamination in coastal environments. Decamethylcyclopentasiloxane (D5) and dodecylcyclohexasiloxane (D6) were predominant siloxanes in sediments over the last two decades. Siloxane concentrations significantly increased in creek sediments from 2008 to 2016, whereas those in inshore and offshore regions significantly decreased due to a strong dilution effect by the operation of tidal power plant. This suggests that consumption patterns and coastal development activities are crucial factors determining the contamination and time trends in the sedimentary siloxanes. The sedimentary concentrations of octamethylcyclotetrasiloxane (D4) and D5 exceeded several thresholds, raising the potentials for ecological risks to aquatic organisms.http://www.sciencedirect.com/science/article/pii/S0147651323013210SiloxaneSedimentTime trendPower plantEcological risk
spellingShingle Yujin Kang
Sunggyu Lee
Wenming Chen
Hyo-Bang Moon
Factors determining contamination and time trends in cyclic and linear siloxanes in sediments from an industrialized lake in Korea
Ecotoxicology and Environmental Safety
Siloxane
Sediment
Time trend
Power plant
Ecological risk
title Factors determining contamination and time trends in cyclic and linear siloxanes in sediments from an industrialized lake in Korea
title_full Factors determining contamination and time trends in cyclic and linear siloxanes in sediments from an industrialized lake in Korea
title_fullStr Factors determining contamination and time trends in cyclic and linear siloxanes in sediments from an industrialized lake in Korea
title_full_unstemmed Factors determining contamination and time trends in cyclic and linear siloxanes in sediments from an industrialized lake in Korea
title_short Factors determining contamination and time trends in cyclic and linear siloxanes in sediments from an industrialized lake in Korea
title_sort factors determining contamination and time trends in cyclic and linear siloxanes in sediments from an industrialized lake in korea
topic Siloxane
Sediment
Time trend
Power plant
Ecological risk
url http://www.sciencedirect.com/science/article/pii/S0147651323013210
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