A ubiquitous tire rubber–derived chemical induces acute mortality in coho salmon

Science, Journal Year: 2020, Volume and Issue: 371(6525), P. 185 - 189

Published: Dec. 3, 2020

In U.S. Pacific Northwest coho salmon (

Language: Английский

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Ecological risk assessment of fifty pharmaceuticals and personal care products (PPCPs) in Chinese surface waters: A proposed multiple-level system

Environment International, Journal Year: 2020, Volume and Issue: 136, P. 105454 - 105454

Published: Feb. 4, 2020

Interest in the risks posed by trace concentrations of pharmaceuticals and personal care products (PPCPs) surface waters is increasing, particularly with regard to potential effects long-term, low-dose exposures aquatic organisms. In most cases, actual studies on PPCPs were risk assessments at screening-level, accurate estimates scarce. this study, exposure ecotoxicity data 50 collected based our previous studies, a multiple-level environmental assessment was performed. The selected are likely be frequently detected China, ranging from ng L-1 low-g L-1, quotients median ranged 2046 for nonylphenol 0 phantolide. A semi-probabilistic approach screened 33 that organisms, among which 15 chemicals (nonylphenol, sulfamethoxazole, di (2-ethylhexyl) phthalate, 17β-ethynyl estradiol, caffeine, tetracycline, 17β-estradiol, estrone, dibutyl ibuprofen, carbamazepine, tonalide, galaxolide, triclosan, bisphenol A) categorized as priority compounds according an optimized assessment, then refined probabilistic indicated 12 them low high ecosystem, maximum 1.54% 17.38%. Based these results, we propose appropriate screening contaminants national scale, when more estimation required, probability useful. methodology process might provide reference other research chemical evaluation management rivers, lakes, sea waters.

Language: Английский

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Statement on advancing the assessment of chemical mixtures and their risks for human health and the environment

Environment International, Journal Year: 2019, Volume and Issue: 134, P. 105267 - 105267

Published: Nov. 6, 2019

The number of anthropogenic chemicals, manufactured, by-products, metabolites and abiotically formed transformation products, counts to hundreds thousands, at present. Thus, humans wildlife are exposed complex mixtures, never one chemical a time rarely with only dominating effect. Hence there is an urgent need develop strategies on how exposure multiple hazardous chemicals the combination their effects can be assessed. A workshop, “Advancing Assessment Chemical Mixtures Risks for Human Health Environment” was organized in May 2018 together Joint Research Center Ispra, EU-funded research projects Commission Services relevant EU agencies. This forum researchers policy-makers created discuss identify gaps risk assessment governance mixtures as well state art science future needs. Based presentations discussions this workshop we want bring forward following Key Messages: We turning point: exposures combined require better management protect public health environment from mixtures. Regulatory initiatives should launched investigate opportunities all regulatory frameworks include prospective mixture consider (real-life) wildlife, across sectors. Precautionary approaches intermediate measures (e.g. Mixture Factor) already applied, although, definitive assessments cannot routinely conducted due significant knowledge data gaps. European strategy needs set, through stakeholder engagement, would aimed scientific advancement mechanistic understanding modelling techniques, address policy Without such clear strategy, specific objectives common priorities, research, policies will likely remain scattered insufficient.

Language: Английский

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Dyes adsorption from aqueous media through the nanotechnology: A review

Journal of Materials Research and Technology, Journal Year: 2021, Volume and Issue: 14, P. 2195 - 2218

Published: Aug. 2, 2021

The article aims to review the research findings on adsorption of dyes from aqueous media. It was observed that activated carbon and Polymer based nanomaterial are best class adsorbents for removal nano composite α-Fe2O3/graphene oxide (α-Fe2O3/GO) PAN–polyamidoamine nanoparticles dye media, with a capacity (qmax) 1998.14 2000 mg/g, respectively. A wide range values thermodynamic parameters (both negative positive) were reported across different studies. This suggested nature adsorbent important factor in determining thermodynamics adsorption. Dye uptake best-fit both Langmuir Freundlich isotherm models as well pseudo-second order kinetic model. Theoretical modelling has received lesser attention; therefore, further investigations needed understand adsorbent–adsorbate interactions at molecular level.

Language: Английский

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High resolution mass spectrometry-based non-target screening can support regulatory environmental monitoring and chemicals management

Environmental Sciences Europe, Journal Year: 2019, Volume and Issue: 31(1)

Published: July 15, 2019

Non-target screening (NTS) including suspect with high resolution mass spectrometry has already shown its feasibility in detecting and identifying emerging contaminants, which subsequently triggered exposure mitigating measures. NTS a large potential for tasks such as effective evaluation of regulations safe marketing substances products, prioritization monitoring programmes assessment environmental quality. To achieve this, further development methodology is required, including: (i) harmonized protocols quality requirements, (ii) infrastructures efficient data management, sharing (iii) sufficient resources appropriately trained personnel the research regulatory communities Europe. Recommendations achieving these three requirements are outlined following discussion paper. In particular, order to facilitate compound identification it recommended that relevant information interpretation spectra, well about compounds usage production tonnages, should be made accessible scientific community (via open-access databases). For many purposes, implemented combination effect-based methods focus on toxic chemicals.

Language: Английский

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(Eco)toxicological tests for assessing impacts of chemical stress to aquatic ecosystems: Facts, challenges, and future

The Science of The Total Environment, Journal Year: 2021, Volume and Issue: 795, P. 148776 - 148776

Published: July 1, 2021

Monitoring of chemicals in the aquatic environment by chemical analysis alone cannot completely assess and predict effects on species ecosystems. This is primarily because increasing number (unknown) stressors mixture present environment. In addition, ability ecological indices to identify underlying causing negative limited. Therefore, additional complementary methods are needed that can address biological a direct manner provide link exposure, i.e. (eco)toxicological tests. (Eco)toxicological tests defined as test systems expose components (cells, individuals, populations, communities) (environmental mixtures of) register effects. These measure responses at sub-organismal (biomarkers vitro bioassays), whole-organismal, population, or community level. We performed literature search obtain state-of-the-art overview ecotoxicological available for assessing impacts biota reveal datagaps. total, we included 509 biomarkers, 207 bioassays, 422 measuring whole-organismal level, 78 population- community- ecosystem-level. Tests level biomarkers were most abundant invertebrates fish, whilst bioassays mostly based mammalian cell lines. ecosystem-level almost missing organisms other than microorganisms algae. an various extrapolation challenges faced using data from these suggest some forward looking perspectives. Although extrapolating measured relevant protection goals remains challenging, combination experiments models key more comprehensive assessment

Language: Английский

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A new toxicity mechanism of N-(1,3-Dimethylbutyl)-N′-phenyl-p-phenylenediamine quinone: Formation of DNA adducts in mammalian cells and aqueous organisms

The Science of The Total Environment, Journal Year: 2023, Volume and Issue: 866, P. 161373 - 161373

Published: Jan. 5, 2023

Language: Английский

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Hydrophilic trace organic contaminants in urban stormwater: occurrence, toxicological relevance, and the need to enhance green stormwater infrastructure

Environmental Science Water Research & Technology, Journal Year: 2019, Volume and Issue: 6(1), P. 15 - 44

Published: Nov. 22, 2019

Urban stormwater transports hydrophilic trace organic contaminants that need study to ensure safe discharge or harvesting for water supply.

Language: Английский

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Water quality and ecological risks in European surface waters – Monitoring improves while water quality decreases

Environment International, Journal Year: 2021, Volume and Issue: 152, P. 106479 - 106479

Published: March 7, 2021

Aquatic ecosystems are at risk of being impaired by various organic chemicals, however comprehensive large-scale evaluations waterbodies' status and trends rare. Here, surface water monitoring data, gathered as part the EU Water Framework Directive comprising occurrence 352 contaminants (>8.3 mil. measurements; 2001–2015; 8213 sites) in 31 European countries, was used to evaluate past current environmental risks for three aquatic species groups: fish, invertebrates, plants. Monitoring quality indices were defined per country found improve over time. Relationships became apparent between countries' index their success detecting contaminants. Across EU, more frequently recent years. Overall, 35.7% (n = 17,484) sites exceeded least one acute regulatory threshold level (RTL) each year, average significantly increased time fish (τ 0.498, p 0.01) invertebrates 0.429, 0.03). This indicates an chemical pressure Europe's waterbodies overall exceedances. Pesticides identified main drivers (>85% RTL exceedances) with most acutely Europe. Agricultural land-use clearly primary spatial driver observed throughout waters. Issues data heterogeneity highlighted also followed subsequent improvement recommendations, strengthening future assessments. ecosystem integrity remains across Europe, signaling demand continued improvements.

Language: Английский

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The Adsorption of Methylene Blue on Eco-Friendly Reduced Graphene Oxide

Nanomaterials, Journal Year: 2020, Volume and Issue: 10(4), P. 681 - 681

Published: April 4, 2020

Recently, green-prepared oxidized graphenes have attracted huge interest in water purification and wastewater treatment. Herein, reduced graphene oxide (rGO) was prepared by a scalable eco-friendly method, its potential use for the removal of methylene blue (MB) from systems, explored. The present work includes green protocol to produce rGO respective spectroscopical morphological characterizations, as well several kinetics, isotherms, thermodynamic analyses successfully demonstrate adsorption MB. pseudo-second-order model appropriated describe kinetics MB onto rGO, suggesting an equilibrium time 30 min. Otherwise, Langmuir more suitable indicating maximum capacity 121.95 mg g−1 at 298 K. In addition, demonstrated that can be treated mixed physisorption–chemisorption process described H-bonding, electrostatic, π − interactions. These results show remove cationic dyes systems.

Language: Английский

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