Bridging knowledge gaps in human chemical exposure via drinking water with non-target screening

Critical Reviews in Environmental Science and Technology, Journal Year: 2024, Volume and Issue: unknown, P. 1 - 25

Published: Sept. 1, 2024

Fundamental knowledge gaps still exist in the exposome, especially regarding analytical space coverage, mapping and prioritization of a very large number diverse chemical structures. This review focuses on contributions suspect non-target screening (NTS) to contaminants characterization toxicity assessment drinking water. A comprehensive publications from 2013-2024 revealed only 172 substances identified with certainty using NTS 17 countries. The approaches, their complementarity, effectiveness use compound identification frameworks are discussed. 'intelligent' tools (including machine learning) aid substance identification, is emerging. Strategies for integration epidemiology also considered, including re-use existing data. holds great potential exposure water its contribution exposome.

Language: Английский

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Critical Evaluation and Meta-Analysis of Ecotoxicological Data on Per- and Polyfluoroalkyl Substances (PFAS) in Freshwater Species

Environmental Science & Technology, Journal Year: 2024, Volume and Issue: unknown

Published: Sept. 24, 2024

Despite the increasing concern regarding ecological risks posed by per- and polyfluoroalkyl substances (PFAS), a lack of comprehensive understanding their actual ecotoxicity remains. Through meticulous examination 91 peer-reviewed studies investigating effects at population level constructing probabilistic species sensitivity distributions (PSSDs), we present state-of-the-science hazard assessment PFAS in freshwater species. Using data subsets containing suboptimal led to an overestimation predicted no-effect concentrations (PNECs) PFAS. We report PNECs perfluoroalkyl carboxylic acids (PFCAs) sulfonates (PFSAs) be 4.8-2000 μg/L 0.4-8.9 μg/L, respectively, derived from high-quality data. Statistical analyses revealed that both functional groups carbon chain length significantly influenced (

Language: Английский

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Comprehensive Review of Global Perspectives on Per- and Polyfluoroalkyl Compounds: Occurrence, Fate, and Remediation in Groundwater Systems

Water, Journal Year: 2024, Volume and Issue: 16(11), P. 1583 - 1583

Published: May 31, 2024

Groundwater contamination with per- and polyfluoroalkyl compounds (PFASs) has become a growing worldwide environmental issue. The current review comprehensively evaluates the global perspective of PFAS pollution in groundwater. Data from 224 recent research articles covering various land use source types were reviewed, including industrial facilities, landfills, biosolids applications, firefighting training sites. bibliographic analysis shows an exponential increase publications on groundwater last five years, more than 50% coming USA, followed by Australia, Canada, China, Sweden. provides insight into analytical techniques, absorbing materials, treatment strategies, field tests, enhanced natural attenuation. Nevertheless, identified significant gaps areas precursor characterization, subsurface behavior, model validation data, long-term sustainable solutions. Moreover, cross-disciplinary approach is required to reduce regulate PFASs’ risks humans ecological system. This presents case study PFASs Saudi Arabian groundwater, revealing elevated levels PFOA PFOS highlighting need for region-specific studies remediation strategies. results will guide efforts protect drinking water supplies life-threatening contaminants.

Language: Английский

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Revealing the factors resulting in incomplete recovery of perfluoroalkyl acids (PFAAs) when implementing the adsorbable and extractable organic fluorine methods

Water Research, Journal Year: 2023, Volume and Issue: 244, P. 120497 - 120497

Published: Aug. 17, 2023

Language: Английский

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Perfluoroalkyl substances in Romanian wastewater treatment plants: Transfer to surface waters, environmental and human risk assessment

The Science of The Total Environment, Journal Year: 2023, Volume and Issue: 892, P. 164576 - 164576

Published: June 1, 2023

Language: Английский

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Identification and quantification of per- and polyfluorinated alkyl substances (PFAS) migrating from food contact materials (FCM)

Chemosphere, Journal Year: 2024, Volume and Issue: 360, P. 142360 - 142360

Published: May 16, 2024

Per- and polyfluorinated alkyl substances (PFAS) can be added to food contact materials (FCM) increase their water and/or grease repellent properties. Some well-known PFAS are perfluoroalkyl carboxylic acids (PFCA), sulfonic (PFSA), telomer alcohols (FTOH). Due the strength of carbon-fluorine bond, chemically very stable highly resistant biological degradation, posing a risk human health environment. To examine presence in paper-based FCM, various samples were collected, including popcorn bags, muffin cups, pizza boxes with high total organic fluorine (TOF) content from Danish Spanish markets. The FCM composition was characterised by FTIR. Quantification some such as PFCA, PFSA, FTOH performed simulants using LC-MS/MS, addition non-targeted screening approach LC-Orbitrap-HRMS. Among analysed samples, highest concentrations found cup made cellulose (PFCA ∼ 1.41 μg kg

Language: Английский

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Performance of pitcher-type POU filters for the removal of 75 PFAS from drinking water: comparing different water sources

Frontiers in Environmental Chemistry, Journal Year: 2024, Volume and Issue: 5

Published: June 4, 2024

This study presents a comprehensive assessment of the performance popular pitcher-type point-of-use (POU) water filters to remove PFAS contaminants from tap waters. The evaluated filters, Brita (Elite and Standard), ZeroWater, Aquagear, ClearlyFiltered, were tested for their efficacy in removing 75 targeted PFAS, total organic carbon (TOC), dissolved solids (TDS), chloride, sulfate two Canadian waters with background Σ concentrations 13 56 ng/L. Overall, performances varied depending on structure filter media, source, specific present. ZeroWater was top performer case removal. volume-weighted average removal after 160 L filtration using Saint-Donat 99% 77% 20% (Elite). In Montreal water, which had different characteristics lower levels, ≈100% 96% 60% 48% (Elite), 38% (Standard). Both laboratory home tests involving yielded similar high-performance results water. Although exhibited high (99%) TDS TOC desorption significant drop pH observed 80 L, phenomenon explained by higher concentration anions this contrast, no due anions. Aquagear demonstrated an unusual increase initial 20 needs further evaluation. discusses individual performance, influence characteristics, potential meet new NSF guidelines, provides valuable insights consumers seeking choose appropriate easy-to-use system ensure safe clean drinking regions.

Language: Английский

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Crowdsourcing citizens for statewide mapping of per- and polyfluoroalkyl substances (PFAS) in Florida drinking water

The Science of The Total Environment, Journal Year: 2024, Volume and Issue: 926, P. 171932 - 171932

Published: March 23, 2024

Language: Английский

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Fluorotelomer betaines and sulfonic acid in aerobic wetland soil: Stability, biotransformation, and bacterial community response

Journal of Hazardous Materials, Journal Year: 2024, Volume and Issue: 477, P. 135261 - 135261

Published: July 18, 2024

Language: Английский

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Synthesis, purification and characterisation of novel PFAS following nontarget analysis

Journal of Fluorine Chemistry, Journal Year: 2025, Volume and Issue: 282, P. 110398 - 110398

Published: Jan. 25, 2025

Language: Английский

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