Legacy and Emerging Per- and Polyfluoroalkyl Substances in a Subtropical Marine Food Web: Suspect Screening, Isomer Profile, and Identification of Analytical Interference

Environmental Science & Technology, Год журнала: 2023, Номер 57(22), С. 8355 - 8364

Опубликована: Май 23, 2023

The ban/elimination of legacy per- and polyfluoroalkyl substances (PFASs) has led to a dramatic increase in the production use various emerging PFASs over past decade. However, trophodynamics many aquatic food webs remain poorly understood. In this study, samples seawaters marine organisms including 15 fish species, 21 crustacean two cetacean species were collected from northern South China Sea (SCS) investigate trophic biomagnification potential PFASs. Bis(trifluoromethylsulfonyl)imide was found seawater via suspect screening (concentration up 1.50 ng/L) but not biota, indicating its negligible bioaccumulation potential. A chlorinated perfluorooctane sulfonate (PFOS) analytical interfering compound identified with predicted formula C

Язык: Английский

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Distribution and Fate of Ultraviolet Absorbents and Industrial Antioxidants in the St. Lawrence River, Quebec, Canada

Environmental Science & Technology, Год журнала: 2022, Номер 56(8), С. 5009 - 5019

Опубликована: Апрель 8, 2022

Ultraviolet absorbents (UVAs) and industrial antioxidants (IAs) are contaminants of emerging concern. In this study, we investigated the distribution partitioning these in surface water, suspended particulate matter (SPM), sediment, various tissues lake sturgeon (Acipenser fulvescens) northern pike (Esox lucius) from St. Lawrence River (SLR), Quebec, Canada. Results indicated that 2,6-di-tert-butyl-1,4-benzoquinone (BHTQ) was dominant contaminant dissolved phase with median concentrations 43, 15, 123 ng/L for three sampling sites, respectively. Surface water collected downstream a major city showed higher levels UVAs, BHTQ, diphenylamine compared to upstream, suggesting influence urban activities on contamination SLR. SPM greater sorption capacities most target those sediment. Different profiles were found pike, implying accumulation UVAs IAs fish depends their feeding behavior. The field-based tissue-specific bioaccumulation factors (BAFs) frequently detected (log BAF 1.5-4.2) generally comparable or lower than Estimation Program Interface modeling results (1.4-5.0), indicating some may be less bioaccumulative previously expected.

Язык: Английский

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Benzotriazole UV stabilizers (BUVs) as an emerging contaminant of concern: a review

Environmental Science and Pollution Research, Год журнала: 2023, Номер 30(58), С. 121370 - 121392

Опубликована: Ноя. 24, 2023

Язык: Английский

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Size-dependent vector effect of microplastics on the bioaccumulation of polychlorinated biphenyls in tilapia: A tissue-specific study

The Science of The Total Environment, Год журнала: 2024, Номер 915, С. 170047 - 170047

Опубликована: Янв. 11, 2024

Язык: Английский

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Controlling factors and toxicokinetic modeling of antibiotics bioaccumulation in aquatic organisms: A review

Critical Reviews in Environmental Science and Technology, Год журнала: 2022, Номер 53(15), С. 1431 - 1451

Опубликована: Ноя. 11, 2022

Antibiotics are emerging pollutants widely existing in the aquatic environment with adverse effects on both humans and organisms. Understanding bioaccumulation of antibiotics organisms is important for their risk assessment. Observations metrics (including bioconcentration factor, biomagnification trophic magnification biota-sediment accumulation factor) reviewed this contribution. It revealed that close attention should be paid to enrofloxacin, sulfamethiazole, doxycycline, sulfadimidine, clarithromycin, azithromycin, chloramphenicol, because they have high potential logarithm factor values beyond a threshold (3.3 L/kg) stipulated REACH regulation. Physicochemical properties (e.g., pH-dependent octanol-water partition coefficient liposome-water distribution coefficient), biological characteristics lipid content, biotransformation potential, growth stages, feeding habits) as well environmental factors presence sediment, pH, salinity, exposure concentrations, co-existence dissolved organic matter, heavy metals, microplastics) can control One-compartment multi-compartment toxicokinetic models summarized. The mainly focused fish, suggesting more efforts needed construct other species. Knowledge gaps critical research directions were highlighted.

Язык: Английский

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44-Year Retrospective Analysis of Ultraviolet Absorbents and Industrial Antioxidants in Seabird Eggs from the Canadian Arctic (1975 to 2019)

Environmental Science & Technology, Год журнала: 2022, Номер 56(20), С. 14562 - 14573

Опубликована: Окт. 5, 2022

Ultraviolet (UV) absorbents and industrial antioxidants are contaminants of emerging concern (CECs), but little is known about their distribution in Arctic wildlife, as well how these vary over time, across regions, between species. We used archived egg samples to examine the temporal patterns 26 UV three seabird species (black-legged kittiwakes Rissa tridactyla, thick-billed murres Uria lomvia, northern fulmars Fulmarus glacialis) sampled Canada 1975 2019. Various synthetic phenolic antioxidants, aromatic secondary amines, benzotriazole stabilizers, organic filters were detected eggs. Overall, had higher levels several antioxidants. Most target reached peak concentrations at different points during 44-year study period or did not significantly time. None contaminant have increased recent years. The antioxidant 2-6-di-tert-butyl-4-methylphenol (BHT) was most frequently eggs, its level declined course kittiwake eggs change fulmars. Future research should effects CECs on health avian species, sources, exposure pathways contaminants.

Язык: Английский

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Tissue-specific accumulation, bioaccumulation, and depuration of liquid crystal monomers (LCMs) in adult zebrafish (Danio rerio)

The Science of The Total Environment, Год журнала: 2022, Номер 859, С. 160267 - 160267

Опубликована: Ноя. 17, 2022

Язык: Английский

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Near-Infrared-II In Vivo Visualization and Quantitative Tracking of Micro/Nanoplastics in Fish

ACS Nano, Год журнала: 2023, Номер 17(19), С. 19410 - 19420

Опубликована: Окт. 2, 2023

As emerging contaminants, micro/nanoplastics (MNPs) are widely present in aquatic environments and often ingested by organisms. However, the vivo trafficking fate of MNPs remain largely unknown. Here, we developed near-infrared (NIR) aggregated-induced emission (AIE) fluorophore-labeled microplastics (2 μm) nanoplastics (100 nm) as models MNPs. This model was based on NIR-AIE technique with strong at second (NIR-IIII) window, which overcomes interference autofluorescence observation artifacts detection commercial fluorescent-labeled particles. Due to its deep tissue penetration noninvasiveness, dynamic process accumulation transport individuals can be tracked NIR imaging. We then directly visualized quantified uptake depuration processes MPs NPs zebrafish. The results showed that were mainly accumulated fish gut, distribution heterogeneous. tended accumulate more fore mid areas gut compared NPs. Besides, both could large quantities locally might cause intestinal obstruction. slowly during initial exposure followed rapid sustained gut. Based these kinetic depuration, a refined toxicokinetic (TK) describe changes Overall, this study proposed MNP technique, provided reliable tracer technology for visualization, tracking quantification vivo.

Язык: Английский

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Predicting the Metal Mixture Toxicity with a Toxicokinetic–Toxicodynamic Model Considering the Time-Dependent Adverse Outcome Pathways

Environmental Science & Technology, Год журнала: 2024, Номер 58(8), С. 3714 - 3725

Опубликована: Фев. 13, 2024

Chemicals mainly exist in ecosystems as mixtures, and understanding predicting their effects are major challenges ecotoxicology. While the adverse outcome pathway (AOP) toxicokinetic–toxicodynamic (TK–TD) models show promise mechanistic approaches chemical risk assessment, there is still a lack of methodology to incorporate AOP into TK–TD model. Here, we describe novel approach that integrates predict mixture toxicity using metal mixtures (specifically Cd–Cu) case study. We preliminarily constructed an through temporal transcriptome analysis together with confirmatory bioassays. The revealed prolonged exposure time activated more key events outcomes, indicating different modes action over time. selected potential event proxy for damage used it measurable parameter replace theoretical (scaled damage) This refined model, which connects molecular responses organism effectively predicts Cd–Cu can be extended other even multicomponent mixtures. Overall, our results contribute better provide insights integrating improve assessment

Язык: Английский

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Exposure to resorcinol bis (diphenyl phosphate) induces colonization of alien microorganisms with potential impacts on the gut microbiota and metabolic disruption in male zebrafish

The Science of The Total Environment, Год журнала: 2024, Номер 932, С. 172892 - 172892

Опубликована: Май 7, 2024

Язык: Английский

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