A review on environmental monitoring of water organic pollutants identified by EU guidelines

Journal of Hazardous Materials, Год журнала: 2017, Номер 344, С. 146 - 162

Опубликована: Окт. 4, 2017

Язык: Английский

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Critical review: Grand challenges in assessing the adverse effects of contaminants of emerging concern on aquatic food webs

Environmental Toxicology and Chemistry, Год журнала: 2018, Номер 38(1), С. 46 - 60

Опубликована: Окт. 8, 2018

Much progress has been made in the past few decades understanding sources, transport, fate, and biological effects of contaminants emerging concern (CECs) aquatic ecosystems. Despite these advancements, significant obstacles still prevent comprehensive assessments environmental risks associated with presence CECs. Many center around extrapolation single chemicals observed laboratory or found individual organisms species field to impacts multiple stressors on food webs. In present review, we identify 5 challenges that must be addressed promote studies CECs from singular exposure events multispecies web interactions. There needs be: 1) more detailed information complexity mixtures environment, 2) a greater sublethal wide range organisms, 3) an ascertaining consequences variable duration CEC exposures within across generations species, 4) linkage systems, 5) documenting trophic We examine current literature show how can fill knowledge gaps. Environ Toxicol Chem 2019;38:46-60. © 2018 SETAC.

Язык: Английский

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Occurrence of caffeine in the freshwater environment: Implications for ecopharmacovigilance

Environmental Pollution, Год журнала: 2020, Номер 263, С. 114371 - 114371

Опубликована: Март 17, 2020

Язык: Английский

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Contaminants of emerging concern in tributaries to the Laurentian Great Lakes: I. Patterns of occurrence

PLoS ONE, Год журнала: 2017, Номер 12(9), С. e0182868 - e0182868

Опубликована: Сен. 27, 2017

Human activities introduce a variety of chemicals to the Laurentian Great Lakes including pesticides, pharmaceuticals, flame retardants, plasticizers, and solvents (collectively referred as contaminants emerging concern or CECs) potentially threatening vitality these valuable ecosystems. We conducted basin-wide study identify presence CECs other interest in 12 U.S. tributaries during 2013 2014. A total 292 surface-water 80 sediment samples were collected analyzed for approximately 200 chemicals. 32 28 detected at least 30% water samples, respectively. Concentrations ranged from 0.0284 (indole) 72.2 (cholesterol) μg/L 1.75 (diphenhydramine) 20,800 μg/kg (fluoranthene) sediment. Cluster analyses revealed that frequently co-occurred such pharmaceuticals retardants sites receiving similar inputs wastewater treatment plant effluent. Comparison environmental concentrations sediment-quality benchmarks polycyclic aromatic hydrocarbon often exceeded both Additionally, bis(2-ethylhexyl) phthalate dichlorvos water-quality several rivers. Results this can be used understand organism exposure, prioritize river basins future management efforts, guide detailed assessments factors influencing transport fate Basin.

Язык: Английский

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Structural Transformation of MnO₂ during the Oxidation of Bisphenol A

Environmental Science & Technology, Год журнала: 2017, Номер 51(11), С. 6053 - 6062

Опубликована: Апрель 26, 2017

Bisphenol A (BPA) is an endocrine-disrupting compound widely used in the plastic industry and found natural waters at concentrations considered harmful for aquatic life. BPA susceptible to oxidation by Mn(III/IV) oxides, which are commonly near-surface environments. Here, we quantify rates formation of its predominant product, 4-hydroxycumyl alcohol (HCA), tandem with transformation a synthetic, Mn(III)-rich δ-MnO2. To investigate effect Mn oxide structural changes on rate, 12 sequential additions 80 μM performed pH 7. During additions, rate decreases 3 orders magnitude, HCA yield from 40% 3%. This attributed accumulation interlayer Mn(II/III) produced during reaction, as observed using X-ray absorption spectroscopy, well additional spectroscopic wet chemical techniques. oxidized that 12.6 times slower than accumulates solution. These results demonstrate degradation environmentally relevant oxides inhibited buildup solid-phase Mn(II/III), specifically sites. Nevertheless, may limit migration environments have potential use drinking wastewater treatment.

Язык: Английский

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Prioritizing chemicals of ecological concern in Great Lakes tributaries using high-throughput screening data and adverse outcome pathways

The Science of The Total Environment, Год журнала: 2019, Номер 686, С. 995 - 1009

Опубликована: Июнь 5, 2019

Chemical monitoring data were collected in surface waters from 57 Great Lakes tributaries 2010 to 13 identify chemicals of potential biological relevance and sites at which these occur. Traditional water-quality benchmarks for aquatic life based on vivo toxicity available 34 67 evaluated chemicals. To expand evaluation effects, measured chemical concentrations compared chemical-specific activities determined high-throughput (ToxCast) vitro assays. Resulting exposure-activity ratios (EARs) used prioritize the greatest concern: 4‑nonylphenol, bisphenol A, metolachlor, atrazine, DEET, caffeine, tris(2‑butoxyethyl) phosphate, tributyl triphenyl benzo(a)pyrene, fluoranthene, benzophenone. Water-quality unavailable five chemicals, but remaining seven, EAR-based prioritization was consistent with that quotients calculated benchmarks. identified three additional PAHs (anthracene, phenanthrene, pyrene) not prioritized using EARs. Through this analysis, an EAR 10-3 as a reasonable threshold above might be concern. better understand apical hazards potentially associated captured ToxCast assays, bioactivity matched adverse outcome pathway (AOP) information. The 49 assays via analysis aligned 23 potentially-relevant AOPs present AOP-Wiki. Mixture effects monitored estimated by summation values multiple individual assay or AOP. Commonly predicted outcomes included impacts reproduction mitochondrial function. approach provided screening-level assessment evidence-based effects. aids future provides testable hypotheses help focus those efforts. This also expands fraction detected biologically-based benchmark are contextualize results.

Язык: Английский

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Occurrence, effects, and ecological risks of chemicals in sanitizers and disinfectants: A review

Environmental Chemistry and Ecotoxicology, Год журнала: 2023, Номер 5, С. 62 - 78

Опубликована: Янв. 1, 2023

In response to the novel coronavirus referred as severe acute respiratory syndrome 2 (SARS-CoV-2) – a virus that causes COVID-19 disease has led wide use of sanitizers and disinfectants. This, in turn, triggered concerns on their potential deleterious effects human health environment due numerous chemicals incorporated both product categories. Here, current state science regarding occurrence ecological different classes these products (e.g., ultraviolent filters, fragrances, etc.) are summarized natural rivers) engineered wastewater treatment plants) systems. Data collected literature suggests disinfectants present environment, large portion toxic fish, algae, daphnia. Using risk quotient approach based data, we found eight posed highest aquatic organisms freshwater systems were benzalkonium chloride, 4-chloro-m-cresol, sodium ortho phenyl phenate, hydrogen peroxide, 1, 2-propanediol, 4-Methyl-benzilidine-camphor, ethylhexyl methoxy cinnamate, octocrylene. Considering limited information for most chemicals, further studies environmental monitoring consequences long-term exposure ecosystems recommended.

Язык: Английский

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Potential for biological effects of per- and polyfluoroalkyl substances (PFAS) in Great Lakes tributaries and associations with land cover and wastewater effluent

Environmental Toxicology and Chemistry, Год журнала: 2025, Номер unknown

Опубликована: Янв. 6, 2025

Abstract Surface water concentrations of per- and polyfluoroalkyl substances (PFAS) potential for resulting biological effects were estimated in a study using Polar Organic Chemical Integrative Samplers (POCIS) from 60 tributary sites within 20 watersheds the Great Lakes Basin 2018. Sites represented range urban to agricultural, forested, wetland land uses included gradient wastewater treatment effluent zero 44% annual streamflow. Several also had airport influence. Twenty-one 32 targeted PFAS compounds detected POCIS samplers, which, 16 available sampling rates enabling time-weighted concentration estimates comparison with data. Estimated compared published quality guidelines (available nine PFAS), effect reported primary literature ECOTOX Knowledgebase apical endpoints (10 PFAS) non-apical vitro high-throughput screening data ToxCast (14 PFAS). Based on conservative evaluation approach that was weighted persistence limitations toxicological information, five individual PFAS, including Perfluorooctanesulfonic acid, Perfluorohexanesulfonic Perfluorobutanesulfonic Perfluorooctanoic Perfluorononanoic acid identified as warranting additional investigation. Possible increased potency mixtures over chemical effects, by summation exposure-activity ratios (EARs) chemicals influence common assays specified gene targets, indicated EAR values up 5.6-fold 14 contributing mixture predictions. Potential summed ratios, correlated use proportion streamflow contributed effluent.

Язык: Английский

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Current-Use Flame Retardants in the Water of Lake Michigan Tributaries

Environmental Science & Technology, Год журнала: 2017, Номер 51(17), С. 9960 - 9969

Опубликована: Авг. 17, 2017

In this study, we measured the concentrations of 65 flame retardants in water samples from five Lake Michigan tributaries. These included organophosphate esters (OPEs), brominated (BFRs), and Dechlorane-related compounds. A total 59 samples, including both particulate dissolved phases, were collected Grand, Kalamazoo, Saint Joseph, Lower Fox rivers Indiana Harbor Ship Canal (IHSC) 2015. OPEs most abundant among targeted compounds with geometric mean ranging 20 to 54 ng/L; OPE comparable BFR about 1 ng/L, most-abundant bis(2-ethylhexyl) tetrabromophthalate, 2-ethylhexyl 2,3,4,5-tetrabromobenzoate, decabromodiphenyl ether. The highest either IHSC or Joseph River. dechlorane-related detected at low (<1 pg/L). fraction target phase relative varied by chemical tended increase their octanol-water partition coefficient. loading all tributaries into <10 kg/year for BFRs 500 OPEs.

Язык: Английский

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Consumption of freshwater fish: A variable but significant risk factor for PFOS exposure

Environmental Research, Год журнала: 2020, Номер 192, С. 110284 - 110284

Опубликована: Окт. 3, 2020

PFOS, PFOA, PFNA and PFHxS are the PFAS substances that currently contribute most to human exposure, in 2020 European Food Safety Authority (EFSA) presented a draft opinion on tolerable intake of 8 ng/kg/week for sum these four (equaling 0.42 μg/kg if expressed as an annual dose). Diet is usually dominating exposure pathway, particular PFOS has been shown be strongly related consumption fish seafood. Those who eat freshwater may especially at risk since its biota typically display higher concentrations than marine systems. In this study, we estimated range among average Swedish "normal" "high" consumers fish. By mean persons weight average-sized portions. The "normal consumers" were assumed 3 times per year, "high once week. Under assumptions, yearly reached when equals 59 3.4 μg kg meat. For muscle tissue edible-sized perch, pike pikeperch retrieved from three different datasets, covering both rural urban regions total 78 inland waters. Mean sites varied 0.3 750 μg/kg. From available data, min-max dietary male was found 0.0021–5.4 μg/kg/yr evaluated scenarios, with median values 0.02–0.16 μg/kg/yr. consumers", 0.04–93 μg/kg/yr, being 0.27–1.6 women, estimates slightly lower, about 79% men. Despite highly variable sites, conclude commonly consumed species Sweden constitute important source even people kind only few year. analyses showed which all below detection limit, their contribution via negligible comparison PFOS.

Язык: Английский

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