Spatiotemporal variations and the ecological risks of organophosphate esters in Laizhou Bay waters between 2019 and 2021: Implying the impacts of the COVID-19 pandemic

Lian, Maoshan; Wang, Jing; Wang, Baodong; Xin, Ming; Lin, Chunye; Gu, Xiang; He, Mengchang; Liu, Xitao; Ouyang, Wei

doi:10.1016/j.watres.2023.119783

Cited by 18 publications

(1 citation statement)

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“…where MEC is the concentration of OPFRs (ng/L) in the effluent water of the WWTP, and PNEC is the predicted concentration of no effect (ng/g). To estimate the possible ecological threat caused by the total OPFRs, the risk quotient RQ mix is calculated, which is the sum of the RQ for each OPFRs [29].…”

Section: Ecological Risk Assessmentmentioning

confidence: 99%

Occurrence, Fate, and Mass Balance Analysis of Organophosphate Flame Retardants in a Municipal Wastewater Treatment Plant in Hunan Province, China

Liu,

Song,

et al. 2024

Water

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The occurrence, distribution, removal, and mass loadings of common organophosphate flame retardants (OPFRs) in an advanced municipal wastewater treatment plant (WWTP) were comprehensively investigated. The OPFRs were mainly partitioning in the dissolved phase, and the total concentrations ranged from 1364 to 1701 ng/L in influent, 678~1064 in effluent, and 177~470 ng/g dw in residual sludge. Tributoxyethyl phosphate and tris(2-chloroethyl) phosphate were the abundant compounds in both the dissolved phase and adsorbed phase. The removal frequencies and mechanisms of the OPFRs were highly associated with the properties of compounds. According to the mass balance analysis, 14.9%, 13.0%, and 11.2% of the total OPFR loads were removed in the traditional treatment, tertiary treatment, and to the sludge, respectively. The mass loadings and environmental emissions of the OPFRs were 0.67~291 μg/d/person and 0.57~107 μg/d/person, respectively. The effluent discharged from the WWTP posed ecological risks to the receiving river, which requires being paid more attention.

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Section: Ecological Risk Assessmentmentioning

confidence: 99%