Per- and Poly-Fluoroalkyl Substances, and Organophosphate Flame Retardants in the Upper Yangtze River: Occurrence, Spatiotemporal Distribution, and Risk Assessment

Toxics, Journal Year: 2025, Volume and Issue: 13(2), P. 116 - 116

Published: Feb. 1, 2025

Contaminants of Emerging Concern (CECs), including per- and polyfluoroalkyl substances (PFASs) organophosphate flame retardants (OPFRs), have raised global concerns due to their persistence, bioaccumulation potential, toxicity. This study presents a comprehensive investigation the occurrence, spatiotemporal distribution, potential sources, ecological human health risks associated with 18 PFASs 9 OPFRs in surface waters upper Yangtze River, China. The water samples were collected from main stream five major tributaries (Min, Jinsha, Tuo, Jialing, Wu Rivers) 2022 2023. total concentration ranged 16.07 927.19 ng/L, 17.36 190.42 respectively, consistently higher observed compared tributaries. Ultra-short-chain (e.g., TFMS) halogenated TCPP) predominant compounds, likely originating industrial discharges, wastewater effluents, other anthropogenic sources. Ecological risk assessments indicated low-to-moderate at most sampling sites, near discharge points. Human evaluations suggested negligible non-carcinogenic but identified carcinogenic OPFR exposure for adults specific locations, particularly Leshan city. highlights importance understanding fate impacts provides valuable insights developing targeted pollution control strategies management measures.

Language: Английский

---

Visible light photocatalytic degradation of pesticides and antibiotics by H3PO4-activated biochar combined with g-C3N4: Effects, mechanism, degradation pathway, and toxicity assessment

Journal of Environmental Management, Journal Year: 2025, Volume and Issue: 380, P. 124929 - 124929

Published: March 17, 2025

Language: Английский

---

Comprehensive Analysis of Pesticide Pollution across the Yangtze River Basin: Spatiotemporal Distribution, Socio-Economic Correlations, and Ecological Risk Assessment

ACS ES&T Water, Journal Year: 2025, Volume and Issue: unknown

Published: March 28, 2025

Language: Английский

---

Per- and polyfluoroalkyl substances in coastal plain water network areas: shifting management focus to sediments

Frontiers in Marine Science, Journal Year: 2025, Volume and Issue: 12

Published: May 6, 2025

Introduction Per- and poly-fluoroalkyl substances (PFAS) are of great concern due to harm human wildlife health. Local-scale studies, especially those focused on ecologically important or densely populated areas, critical effective management, such as prioritizing resource allocation. Methods To prioritize management efforts, we investigated the distribution PFAS in a coastal plain water network area east China, followed by health ecological risk assessments. Results demonstrated that ∑18PFAS (212.86-406.73 ng/L) had non-significant seasonal weak spatial variations. Individual congeners, not ∑PFAS concentrations, were significantly correlated with some quality parameters. sediments, surface water, significant negative relationship river width. The perfluoroalkyl carboxylic acids (PFCAs) dominated (water: 84.9%; sediments: 76.9%), while sediments harbored more sulfonic than (PFSAs; 23.1% vs. 15.1%). Spatial variation was much profound (CV: 83.7% 14.1-46.3%). Despite low-moderate birds (RQ: 0.069-0.16), found neither evident risks other aquatic organisms (RQ < 0.01) nor PFAS. Discussion Our findings revealed divergent pattern versus likely presumable well-mixed conditions caused tidal cycles local level regulations. work suggests focus pollution should be shifted optimize allocation areas.

Language: Английский

---

In situ enhanced catalytic degradation behavior of antibiotics by graphite anodes from spent lithium-ion batteries: the unique role of self-doped metals

Journal of Cleaner Production, Journal Year: 2024, Volume and Issue: unknown, P. 144495 - 144495

Published: Dec. 1, 2024

Language: Английский

---