Discovering Novel Organophosphorus Compounds in Wastewater Treatment Plant Effluents through Suspect Screening and Nontarget Analysis

Environmental Science & Technology, Journal Year: 2024, Volume and Issue: 58(14), P. 6402 - 6414

Published: March 28, 2024

Limited knowledge on the structure of emerging organophosphorus compounds (OPCs) hampers our comprehensive understanding their environmental occurrence and potential risks. Through suspect nontarget screening, combining data-dependent acquisition, data-independent parallel reaction monitoring modes, we identified 60 OPCs (17 traditional 43 compounds) in effluents 14 wastewater treatment plants (WWTPs) Beijing Qinghai, China. These comprise 26 organophosphate triesters, 17 diesters, 6 organophosphonates, 7 organothiophosphate esters, 4 other OPCs. Notably, were newly WWTP effluents, 16 discovered matrices. Specifically, cyclic phosphonate, (5-ethyl-2-methyl-1,3,2-dioxaphosphorinan-5-yl)methyl dimethyl phosphonate P-oxide (PMMMPn), consistently appeared all with semiquantitative concentrations ranging from 44.4 to 282 ng/L. Its analogue, di-PMMMPn, presented 93% samples. Compositional differences between two cities mainly attributed Hazard ecological risk assessment underscored substantial contribution chlorinated esters overall risks effluents. This study provides most OPC profiles date, highlighting need for further research occurrence, fate, risks, particularly

Language: Английский

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Lanthanum-doped Zinc-iron Spinel/Ulva lactuca Linnaeus Biochar: Enhanced electron transfer for superior phosphorus-containing contaminants adsorption

Environmental Technology & Innovation, Journal Year: 2025, Volume and Issue: 37, P. 104008 - 104008

Published: Jan. 1, 2025

Language: Английский

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The isolated Ca-Nx sites in biochar boosting Fe catalyzed Fenton-like oxidation of Tris(2-chloroethyl) phosphate: Properties, mechanisms, and applications

Applied Catalysis B Environment and Energy, Journal Year: 2025, Volume and Issue: 366, P. 125056 - 125056

Published: Jan. 11, 2025

Language: Английский

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Seasonal air concentration variability, gas–particle partitioning, precipitation scavenging, and air–water equilibrium of organophosphate esters in southern Canada

Atmospheric chemistry and physics, Journal Year: 2025, Volume and Issue: 25(1), P. 459 - 472

Published: Jan. 15, 2025

Abstract. In response to increasing production and application volumes, organophosphate esters (OPEs) have emerged as pervasively detected contaminants in various environmental media, with concentrations often exceeding those of traditional organic contaminants. Despite the recognition atmosphere's important role dispersing OPEs a substantial number studies quantifying air, investigations into atmospheric phase distribution processes are rare. Using measurements gas particle phase, precipitation, surface water collected southern Canada, we explored seasonal concentration variability, gas–particle partitioning behaviour, precipitation scavenging, air–water equilibrium status OPEs. Whereas consistent trends were not observed for OPE or particles, several elevated during summer suburban Toronto at two remote sites on Canada's eastern western coast. Apparent enthalpies air–surface exchange fell mainly within slightly above range air–octanol exchange, indicating influence local and/or seasonally variable source strength. While many present notable fraction both no clear relationship compound volatility was apparent, although there tendency higher particle-bound fractions lower temperature. High scavenging ratios measured coastal low association particles. Although beset by large uncertainties, calculations suggest net deposition gaseous from atmosphere Salish Sea St. Lawrence River Estuary. The variability is likely less reflection temperature-driven instead indicates that more enter formed summer. More research needed better understand behaviour how it may be influenced transformation reactions.

Language: Английский

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Recycling process of decoration and demolition waste is a neglected source for emerging concerns in particulate phase: PAHs as an example

Environment International, Journal Year: 2025, Volume and Issue: unknown, P. 109393 - 109393

Published: March 1, 2025

Language: Английский

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Multimedia-Based Source Apportionment and Health Implications of Indoor Organophosphate Esters in Various Scenes of Urban Beijing, China

Environmental Science & Technology, Journal Year: 2025, Volume and Issue: unknown

Published: April 7, 2025

Studies on source apportionment of indoor OPEs rarely involve multiple media and characteristic markers emissions. Herein, we present a novel framework for quantitative integrative appointment by integrating OPE concentrations in multimedia into equivalent (EICs) using Utility was demonstrated applying it to five types microenvironments where the 13 were ubiquitous (indoor dust: 993-14000 ng/g; air: 0.549-14.1 ng/m3). The paired dust air samples adopted construct "Measured-Paired-EICs" data set apportionments via positive matrix factorization (PMF). Moreover, an alternative model method constructing EIC sets from single-medium measurements established improve applicability framework. Accordingly, "Modeled-Paired-EICs", "Dust-Only", "Air-Only" constructed comparison. extracted factors exhibited consistent contributions "Modeled-Paired-EICs" solutions (RSD: 0.14-5.4%), while solution identified incomplete "Dust-Only" showed errors 40.6-262%. Specifically, PMF analysis resolved seven known sources other unknown sources. Furthermore, heterogeneities identification observed across various exposure scenarios; probabilistic carcinogenic risk TCEP (up 7.19 × 10-7) close acceptable level (1 10-6) demands further attention.

Language: Английский

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Source traceability of microplastics in road dust using organic/inorganic plastic additives as chemical indicators

The Science of The Total Environment, Journal Year: 2024, Volume and Issue: 932, P. 172808 - 172808

Published: May 6, 2024

Language: Английский

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Seasonal Air Concentration Variability, Gas/Particle Partitioning, Precipitation Scavenging, and Air-Water Equilibrium of Organophosphate Esters in Southern Canada

Published: Aug. 1, 2024

Abstract. In response to increasing production and application volumes, organophosphate esters (OPEs) have emerged as pervasively detected contaminants in various environmental media, with concentrations often exceeding those of traditional organic contaminants. Despite the recognition atmosphere's important role dispersing OPEs a substantial number studies quantifying air, investigations into atmospheric phase distribution processes are rare. Using measurements gas particle phase, precipitation surface water collected Southern Canada, we explored seasonal concentration variability, gas/particle partitioning behaviour, scavenging, air-water equilibrium status OPEs. Whereas consistent trends were not observed for or particles, several elevated during summer suburban Toronto at two remote sites on Canada's east west coast. Apparent enthalpies air-surface exchange fell mainly within slightly above range air/water air/octanol exchange, indicating influence local and/or seasonally variable source strength. While many present notable fraction both no clear relationship compound volatility was apparent, although there tendency higher particle-bound fractions lower temperature. High scavenging ratios measured coastal low association particles. Although beset by large uncertainties, calculations suggest net deposition gaseous from atmosphere Salish Sea St. Lawrence River Estuary. The variability is likely less reflection temperature driven instead indicates that more OPE enter, formed in, summer. More research needed better understand gas-particle behaviour how it may be influenced transformation reactions.

Language: Английский

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Organophosphate esters in terrestrial environments of Fildes Peninsula, Antarctica: Occurrence, potential sources, and bioaccumulation

Journal of Hazardous Materials, Journal Year: 2024, Volume and Issue: 478, P. 135519 - 135519

Published: Aug. 14, 2024

Language: Английский

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Occurrence and Distribution of Organophosphate Flame Retardants in Tap Water System—Implications for Human Exposure from Shanghai, China

Toxics, Journal Year: 2024, Volume and Issue: 12(10), P. 696 - 696

Published: Sept. 26, 2024

The pollution of organophosphate flame retardants (OPFRs) is global concern, but the site-specific data OPFR concentrations in drinking water are scarce for many areas world outside Europe and US. This study aimed to investigate occurrence profiles OPFRs tap treatment delivery process Shanghai.

Language: Английский

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