Insights into organophosphate esters (OPEs) in aquatic ecosystems: Occurrence, environmental behavior, and ecological risk

Yang, Ya; Meng, Ying; Liu, Shuang; Wei, Lai; Huang, Qinghui

doi:10.1080/10643389.2023.2266311

Cited by 6 publications

(3 citation statements)

References 215 publications

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“…The ∑ 7 aryl-OPE concentrations in the sediment cores were in the ranges of 0.16–2.24 ng g –1 at site C1, 0.26–2.07 ng g –1 at site C2, 0.22–3.17 ng g –1 at site C3, and 0.23–1.23 ng g –1 at site C4. With high organic carbon–water partition coefficient values (log K oc > 3.5), aryl-OPEs exhibit limited potential to undergo vertical migration in sediment layers through the pore water pathway . Therefore, the vertical patterns of aryl-OPEs within sediment cores can serve as reliable indicators of changing input over recent decades.…”

Section: Resultsmentioning

confidence: 99%

“…With high organic carbon−water partition coefficient values (log K oc > 3.5), aryl-OPEs exhibit limited potential to undergo vertical migration in sediment layers through the pore water pathway. 43 Therefore, the vertical patterns of aryl-OPEs within sediment cores can serve as reliable indicators of changing input over recent decades. Apart from site C2, the sediment cores at other sampling sites generally exhibited a trend of increasing ∑ 7 aryl-OPE concentration with decreasing depth, indicating that aryl-OPE inventories have gradually increased in PRE sediments (Figure 3).…”

Section: ■ Materials and Methodsmentioning

confidence: 99%

“…35 Given this finding, the considerable IDDPP amount present in the surface sediments from the inner region of the PRE calls for close attention to its potential impact on the health of coastal and marine ecosystems. As IDDPP is commonly used as a plasticizer for PVC and flame retardant in PVC/nitrile rubber in the fields of building, construction, and transportation, 17 43 Therefore, the vertical patterns of aryl-OPEs within sediment cores can serve as reliable indicators of changing input over recent decades. Apart from site C2, the sediment cores at other sampling sites generally exhibited a trend of increasing ∑ 7 aryl-OPE concentration with decreasing depth, indicating that aryl-OPE inventories have gradually increased in PRE sediments (Figure 3).…”

Section: ■ Materials and Methodsmentioning

confidence: 99%

See 2 more Smart Citations

Aggravating Pollution of Emerging Aryl Organophosphate Esters in Urban Estuarine Sediments of South China

Lao,

Huang,

et al. 2024

Environ. Sci. Technol.

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Emerging aryl organophosphate esters (aryl-OPEs) have been employed as substitutes for organohalogen flame retardants in recent years; however, their environmental occurrence and associated impacts in urban estuarine sediments have not been adequately investigated, impeding regulatory decision-making. Herein, field-based investigations and modeling based on surface sediment and sediment core analysis were employed to uncover the historical pollution and current environmental impacts of aryl-OPEs in the Pearl River Estuary, South China. Our results revealed a substantial increase in aryl-OPE emission, particularly emerging aryl-OPEs, through sediment transport to the estuary since the 2000s. The emerging aryl-OPEs comprised 83% of the total annual input in the past decade, with an average annual input of 155,000 g. Additionally, the emerging-to-traditional aryl-OPE concentration ratios increased with decreasing distance from the shore, peaking in the highly urbanized riverine outlets. These findings indicate that inventories of emerging aryl-OPEs are likely increasing in estuarine sediments and their emissions are surpassing those of traditional aryl-OPEs. Our risk-based priority screening approach indicates that some emerging aryl-OPEs, particularly bisphenol A bis(diphenyl phosphate), can pose a higher environmental risk than traditional aryl-OPEs in estuarine sediments. Overall, our study highlights the importance of recognizing the environmental impacts of emerging aryl-OPEs.

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Section: Resultsmentioning

confidence: 99%

Section: ■ Materials and Methodsmentioning

confidence: 99%