Occurrence and bioaccumulation of organophosphate flame retardants in high-altitude regions: A comprehensive field survey in Qinghai Province, China

Ecotoxicology and Environmental Safety, Journal Year: 2025, Volume and Issue: 289, P. 117715 - 117715

Published: Jan. 1, 2025

Organophosphate flame retardants (OPFRs) are a class of substances that pose potential risks to human health and ecosystems due their large-scale production, wide range applications, ubiquitous presence in the environment. With for long-range atmospheric transport (LRAT), OPFR pollution high-altitude areas has become an increasing concern. Herein, general pretreatment method OPFRs across various sample matrices was established combined with gas chromatography-mass spectrometry (GC-MS), utilizing programmed temperature ramp vaporization chamber enable high-throughput detection environmental matrices. were quantified soil, grass, tree bark, wild rat liver samples collected from Qinghai, China (elevation: 2657-4635 m), occurrence bioaccumulation behaviors systematically investigated. All contaminated OPFRs, ∑OPFR concentrations showing trend (mean: 439 ng/g, median: 420 ng/g) > grass 338 273 soil 190 162 bark 125 116 ng/g). Paired Spearman correlation analysis showed ∑OPFRs significantly positively correlated (P = 0.0023), indicating is main source grass. Among samples, tris(2-chloroisopropyl) phosphate (TCIPP) tris(2-chloroethyl) (TCEP) had highest contribution rates ∑OPFRs, cumulative contributions 60.9 %, 48.6 76.5 71.1 respectively, proportion industrial sources reaching this area through LRAT relatively high. Biomagnification factor (BMF) revealed exhibited significant biomagnification effects within soil-grass-rat terrestrial food chain. The ecological risk assessment results indicated study high risk, aryl-OPFRs posing greatest risk. Our findings provide crucial foundation further investigation into contamination characteristics regions.

Language: Английский

---

Organophosphate ester flame retardants in sediments and marine fish species in Colombia: Occurrence, distribution, and implications for human risk assessment

Marine Pollution Bulletin, Journal Year: 2025, Volume and Issue: 213, P. 117654 - 117654

Published: Feb. 8, 2025

Exposure to organophosphate esters (OPEs) remains a significant concern, especially in aquatic systems where these compounds can bioaccumulate organisms. However, limited information exists regarding their potential health risks humans through the food web tropical ecosystems. This study investigated levels, bioaccumulation, and trophic transfer of OPEs sediments marine fish species from Cartagena Barbacoas bays, Colombia. Twenty target were quantified fish. The average concentrations ∑18OPEs ranged 2.80 115 ng/g dry weight (dw), while ∑20OPE 212 1968 lipid (lw), with highest found carnivorous species. Trophic magnification factors (TMF) for varied 11.0 25.8 such as 2-ethylhexyl diphenyl phosphate (EHDPP), 4-isopropylphenyl (4IPPDPP), tris(2-isopropylphenyl) (T2IPPP), tricresylphosphate (TCP), indicating biomagnification within web. Biota-sediment accumulation (BSAF) ∑11OPEs 0.340 4.32, showing Spearman correlation log Kow fish: Pargo chino (r = -0.78, p < 0.05), Mojarra blanca 0.79, Lisa 0.72, 0.05). suggests that bioaccumulation certain increase lipophilicity compounds. Despite findings, human risk OPE exposure via consumption was be minimal.

Language: Английский

---

Factors influencing the occurrence and distribution of organophosphate esters in sediments by cascade reservoirs of the Wujiang River in Southwest China

Acta Geochimica, Journal Year: 2025, Volume and Issue: unknown

Published: Feb. 19, 2025

Language: Английский

---

The acute toxicity of tripropyl phosphate and tributyl phosphate to Microcystis aeruginosa

Environmental Geochemistry and Health, Journal Year: 2025, Volume and Issue: 47(4)

Published: March 14, 2025

Language: Английский

---

Biogeochemical Impact on the Distribution Variations of Organophosphorus Flame Retardants in Estuarine Area and Insight into Climate Change

Journal of Hazardous Materials, Journal Year: 2025, Volume and Issue: unknown, P. 137993 - 137993

Published: March 1, 2025

Language: Английский

---

Organophosphate esters (OPEs) pollution characteristics, bioaccumulation and human consumption implication in wild marine organisms from the Yellow River Estuary, China

Marine Pollution Bulletin, Journal Year: 2024, Volume and Issue: 206, P. 116708 - 116708

Published: July 9, 2024

Language: Английский

---

Legacy and emerging Organophosphate flame retardants (OPFRs) in water and sediment from the Pearl River Delta to the adjacent coastal waters of the South China Sea: Spatioseasonal variations, flux estimation and ecological risk

Environmental Pollution, Journal Year: 2025, Volume and Issue: 367, P. 125633 - 125633

Published: Jan. 2, 2025

Language: Английский

---

Multimedia screening of conventional and emerging organophosphate esters alongside urbanized coasts

Marine Pollution Bulletin, Journal Year: 2025, Volume and Issue: 216, P. 117994 - 117994

Published: April 18, 2025

Language: Английский

---

Occurrence, spatial distribution and ecological risk assessment of Organophosphate Esters in surface water and sediments from the Ravi River and its tributaries

The Science of The Total Environment, Journal Year: 2024, Volume and Issue: 948, P. 174828 - 174828

Published: July 19, 2024

Language: Английский

---

Fate of organophosphate flame retardants (OPFRs) in the “Cambi® TH + AAD” of sludge in a WWTP in Beijing, China

Waste Management, Journal Year: 2023, Volume and Issue: 169, P. 363 - 373

Published: July 29, 2023

Language: Английский

---