Integrated assessment of persistent toxic substances in sediments from Masan Bay, South Korea: Comparison between 1998 and 2014

Lee, Jung-Hyun; Hong, Seongjin; Kwon, Bong-Oh; Ah, Seung; Jeong, Hee-Dong; Chang, Won Keun; Ryu, Jongseong; Giesy, John P.; Khim, Jong Seong

doi:10.1016/j.envpol.2018.02.064

Cited by 23 publications

(5 citation statements)

References 39 publications

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“…The geographic breadth of studies dealing with estuarine ecosystems was generally larger, as is the case of (Moreira et al, 2019), where sampling points encompassed a large costal area interested by landdriven contaminants via river discharges. Similar yet smaller in size was the case described by (Lee et al, 2018), concerning a bay historically impacted by different anthropic activities. In these last studies, multiple contaminants inputs, such as production plants and increased urbanization, were the motive behind the realization of a triad procedure.…”

Section: Real Life Applications Of the Triad Approachsupporting

confidence: 72%

State of the Art of Triad-Based Ecological Risk Assessment: Current Limitations and Needed Implementations in the Case of Soil Diffuse Contamination

Grassi

Lamy

Pucheux

et al. 2022

Front. Environ. Sci.

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Soils can be sinks of pollutant mixtures, whose effects on terrestrial ecosystems are not of obvious interpretation. Risk assessment is rather codified and many approaches can be used. Nevertheless, there are still uncertainties remaining when dealing with diffuse pollution, including chronic inputs of low, sublethal, concentrations of mixtures of micropollutants. In this paper, we reviewed through a comprehensive literature analysis one of the latest promising methodologies, the triad approach, in order to understand its area of application in terrestrial ecosystems, the ways of applicability and the reported actual usage. In the case of diffuse pollution, where all the criteria of the triad approach can differ in their indication, we show that some improvements have to be made in either the chemical, ecological or ecotoxicological approaches to be able to clearly identify the risk and to address the uncertainties linked to the low, sublethal contents of contaminants.

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Section: Real Life Applications Of the Triad Approachsupporting

confidence: 72%

State of the Art of Triad-Based Ecological Risk Assessment: Current Limitations and Needed Implementations in the Case of Soil Diffuse Contamination

Grassi

Lamy

Pucheux

et al. 2022

Front. Environ. Sci.

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“…D5 and D6 are widely added to commercial detergents for various uses (Horii and Kannan, 2008;Wang et al, 2013a), and are also widely added to consumer products, such as toothpaste, hair conditioners, skin care products, cosmetics, and sunscreen products (Lu et al, 2011;Gobas et al, 2015;Zhang et al, 2018). The higher contributions of D5 and D6 observed in our study may be due to intensive industrial activities and rapid urban development in the coastal areas (Lee et al, 2018b). The contributions of individual linear siloxanes (L8-L13) in sediment ranged from 1% to 9% of the ƩSiloxane concentrations, without any significant changes depending on the sampling years.…”

Section: Composition Profiles and Pollution Sources Of Siloxanesmentioning

confidence: 55%

Spatial distribution and temporal trends of cyclic and linear siloxanes in sediment from semi-enclosed and industrialized bays of Korea, in 2013 and 2021

et al. 2023

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Although siloxanes are contaminants of emerging concerns, limited studies have been conducted on contamination and time trends in siloxanes from aquatic environments worldwide. To date, most previous studies have focused on the environmental relevance of cyclic siloxanes in coastal environments. In the present study, cyclic and linear siloxanes were measured in sediment collected from semi-enclosed bays in Korea in 2013 and 2021 to assess occurrence, spatial distribution, temporal trends, and ecological risks. Almost all siloxanes were detected in all sediment samples, indicating continuous contamination for the last decade. The concentrations of cyclic siloxanes in sediment were approximately two times higher than those of linear siloxanes. Decamethylcyclopentasiloxane (D5) and dodecamethylcyclohexasiloxane (D6) were predominantly detected in all sediment samples, possibly due to their high consumption and strong resistance. The overall concentrations of siloxanes in sediment gradually decreased from inner to outer parts of the bays, suggesting that industrial activities largely contributed to siloxane contamination. Moreover, the highest concentrations of siloxanes in both sampling years were observed in sediment near the outfall of wastewater treatment plant, implying a potential source in the coastal environment. Siloxane concentrations in sediment were significantly correlated with sedimentary organic carbon. The concentrations of siloxanes in sediment were not significantly different between 2013 and 2021, indicating ongoing contamination. The concentrations of D5 and D6 in our sediment samples showed a limited potential to pose a threat to benthic organisms.

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“…Concentrations of SOs were also low with 35 and 56 ng g –1 dm at S1 and S2, respectively (Table S5). It was recently reported the historical pollution of SOs in Masan Bay sediments by analysis of 1998 archived and 2014 collected samples . A drastic decrease in sedimentary concentrations of 10 SOs in the region from 1998 (mean = 4940 ng g –1 dm; n = 7) to 2014 (mean = 128 ng g –1 dm; n = 7).…”

Section: Resultsmentioning

confidence: 99%

“…The development of highly sensitive target analyses allows precise and accurate quantification of chemical contaminations in sediments . However, due to technical limitations, such analyses often provide little information about the toxicity of chemical mixtures and/or bioavailability. , More importantly, chemical concentrations are not sufficient to demonstrate biological effects, because they do not provide information about the potential adverse effects on aquatic organisms. ,, For a comprehensive assessment, bioassays combined with chemical analyses are needed to infer probable adverse biological effects . However, it is not practical to identify the potential toxic effects of all chemicals, primarily due to mixture effects, in the environments of aquatic organisms.…”

Section: Introductionmentioning

confidence: 99%

“…Severe pollution of sediments and associated significant toxic effects have been reported for Masan Bay since the 1990s (Figure S1 of the Supporting Information, SI). ,, Bioassays utilized in the present study cover three mechanisms of actions, including specific-, baseline-, and reactive-toxicity . In vitro bioassays comprise receptor gene assays for measuring “specific toxicity” of AhR agonists, such as polycyclic aromatic hydrocarbons (PAHs) (H4IIE- luc bioassay), and the bacterial test ( Vibrio fischeri assay), which is related to the energy metabolism of a bacterium, was used for “baseline toxicity” measurements. − In vitro bioassays are characterized by being rapid, cost-effective, sensitive, and reproducible assays .…”

Section: Introductionmentioning

confidence: 99%

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Multiple Bioassays and Targeted and Nontargeted Analyses to Characterize Potential Toxicological Effects Associated with Sediments of Masan Bay: Focusing on AhR-Mediated Potency

Lee

Hong

Kim

et al. 2020

Environ. Sci. Technol.

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An enhanced, multiple lines of evidence approach was applied to assess potential toxicological effects associated with polluted sediments. Two in vitro bioassays (H4IIE-luc and Vibrio f ischeri) and three in vivo bioassays (microalgae: Isochrysis galbana and Phaeodactylum tricornutum; zebrafish embryo: Danio rerio) were applied. To identify causative chemicals in samples, targeted analyses (polycyclic aromatic hydrocarbons (PAHs), styrene oligomers (SOs), and alkylphenols) and nontargeted full-scan screening analyses (FSA; GC-and LC-QTOFMS) were performed. First, great AhR-mediated potencies were observed in midpolar and polar fractions of sediment extracts, but known and previously characterized AhR agonists, including PAHs and SOs could not fully explain the total potencies of samples. Enoxolone was identified as a novel AhR agonist in a highly potent sediment fraction by use of FSA. Enoxolone has a relative potency of 0.13 compared to benzo[a]pyrene (1.0) in the H4IIE-luc bioassay. Nonylphenols associated with membrane damage that influenced the viability of the microalgae were also observed. Finally, inhibitions of bioluminescence of V. f ischeri and lethality of D. rerio embryos were strongly related to nonpolar compounds. Overall, the present work addressed assay-and end point-specific variations and sensitivities for potential toxicities of mixture samples, warranting a significant utility of the "multiple lines of evidence" approach in ecological risk assessment.

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Integrated assessment of persistent toxic substances in sediments from Masan Bay, South Korea: Comparison between 1998 and 2014

Cited by 23 publications

References 39 publications

State of the Art of Triad-Based Ecological Risk Assessment: Current Limitations and Needed Implementations in the Case of Soil Diffuse Contamination

State of the Art of Triad-Based Ecological Risk Assessment: Current Limitations and Needed Implementations in the Case of Soil Diffuse Contamination

Spatial distribution and temporal trends of cyclic and linear siloxanes in sediment from semi-enclosed and industrialized bays of Korea, in 2013 and 2021

Multiple Bioassays and Targeted and Nontargeted Analyses to Characterize Potential Toxicological Effects Associated with Sediments of Masan Bay: Focusing on AhR-Mediated Potency

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