Water, Water Everywhere, but Every Drop Unique: Challenges in the Science to Understand the Role of Contaminants of Emerging Concern in the Management of Drinking Water Supplies DOI Creative Commons
Susan T. Glassmeyer, Emily E. Burns, Michael J. Focazio

et al.

GeoHealth, Journal Year: 2023, Volume and Issue: 7(12)

Published: Dec. 1, 2023

Abstract The protection and management of water resources continues to be challenged by multiple ongoing factors such as shifts in demographic, social, economic, public health requirements. Physical limitations placed on access potable supplies include natural human‐caused aquifer depletion, aging infrastructure, saltwater intrusion, floods, drought. These factors, although varying magnitude, spatial extent, timing, can exacerbate the potential for contaminants concern (CECs) present sources drinking water, premise plumbing associated tap water. This monograph examines how current emerging scientific efforts technologies increase our understanding range CECs issues facing future populations. It is not intended read one sitting, but instead a starting point scientists wanting learn more about surrounding CECs. text discusses topical evolution over time (Section 1), improvements measuring chemical microbial CECs, through both analysis concentration toxicity 2) modeling CEC exposure fate 3), forms treatment effective at removing 4), human impacts from 5). paper concludes with changes quantity, scarcity surpluses, could affect quality 6). Taken together, these sections document past 25 years research regulatory response contaminants, work identify monitor mitigate exposure, challenges future.

Language: Английский

A risk based assessment approach for chemical mixtures from wastewater treatment plant effluents DOI Creative Commons
Saskia Finckh, Liza‐Marie Beckers, Wibke Busch

et al.

Environment International, Journal Year: 2022, Volume and Issue: 164, P. 107234 - 107234

Published: April 15, 2022

In this study, 56 effluent samples from 52 European wastewater treatment plants (WWTPs) were investigated for the occurrence of 499 emerging chemicals (ECs) and their associated potential risks to environment. The two main objectives (i) extend our knowledge on occurring in treated wastewater, (ii) identify prioritize compounds concern based three different risk assessment approaches identification consensus mixture drivers concern. Approaches include PNEC EQS-based regulatory quotients (RQs), species sensitivity distribution (SSD)-based hazard units (HUs) (iii) toxic (TUs) biological quality elements (BQEs) algae, crustacean, fish. For purpose, solid-phase extracts analysed with wide-scope chemical target screening via liquid chromatography high-resolution mass spectrometry (LC-HRMS), resulting 366 detected compounds, concentrations ranging < 1 ng/L > 100 µg/L. categorized respect critical information relevant management prioritization including: (1) frequency occurrence, (2) measured concentrations, (3) use groups, (4) persistence & bioaccumulation, (5) modes action. A comprehensive using RQ, HU TU indicated exceedance thresholds majority effluents RQ being most sensitive metric. total, 299 out identified as contributors one approaches, while 32 established high concern, including a percentage (66%) pesticides biocides. which have passed an advanced ozonation or activated carbon (AC), consistently much lower estimated.

Language: Английский

Citations

94
Identification and Prioritization of Environmental Organic Pollutants: From an Analytical and Toxicological Perspective DOI
Ting Ruan, Pengyang Li, Haotian Wang

et al.

Chemical Reviews, Journal Year: 2023, Volume and Issue: 123(17), P. 10584 - 10640

Published: Aug. 2, 2023

Exposure to environmental organic pollutants has triggered significant ecological impacts and adverse health outcomes, which have been received substantial increasing attention. The contribution of unidentified chemical components is considered as the most knowledge gap in understanding combined effects pollutant mixtures. To address this issue, remarkable analytical breakthroughs recently made. In review, basic principles on recognition are overviewed. Complementary methodologies (i.e., quantitative structure–activity relationship prediction, mass spectrometric nontarget screening, effect-directed analysis) experimental platforms briefly described. stages technique development and/or essential parts workflow for each then reviewed. Finally, plausible paths applications future screening methods, interdisciplinary techniques achieving toxicant identification, burgeoning strategies risk assessment cocktails discussed.

Language: Английский

Citations

88
Overarching issues on relevant pesticide transformation products in the aquatic environment: A review DOI
Kyriaki Anagnostopoulou, Christina Nannou, Εleni Εvgenidou

et al.

The Science of The Total Environment, Journal Year: 2022, Volume and Issue: 815, P. 152863 - 152863

Published: Jan. 4, 2022

Language: Английский

Citations

71
Mapping chemical footprints of organic micropollutants in European streams DOI Creative Commons
Saskia Finckh, Eric Carmona, Dietrich Borchardt

et al.

Environment International, Journal Year: 2023, Volume and Issue: 183, P. 108371 - 108371

Published: Dec. 5, 2023

There is increasing awareness that chemical pollution of freshwater systems with complex mixtures chemicals from domestic sources, agriculture and industry may cause a substantial footprint on water organisms, pushing aquatic ecosystems outside the safe operating space. The present study defines footprints as risk or will have adverse effects specific group organisms. aim to characterise these in European streams based unique uniform screening more than 600 445 surface samples, derive site- compound-specific information for management prioritisation purposes. In total, 504 pesticides, biocides, pharmaceuticals other compounds been detected, including frequently occurring site-specific concentrations up 74 µg/L. Key finding three-quarter investigated sites 22 river basins exceed established thresholds freshwater, leading expected acute chronic impacts largest were recorded invertebrates, followed by algae fish. More 70 invertebrates. For all organism groups, pesticides biocides main drivers footprints, while mixture particularly relevant No clear significant correlation was found between urban discharge fractions, suggesting effluent-specific quality rather total load treated wastewater environment contribution diffuse e.g. agriculture, determine footprints.

Language: Английский

Citations

26
A comprehensive review on toxicological mechanisms and transformation products of tebuconazole: Insights on pesticide management DOI
Bizhang Dong

The Science of The Total Environment, Journal Year: 2023, Volume and Issue: 908, P. 168264 - 168264

Published: Oct. 31, 2023

Language: Английский

Citations

23
Forever Pesticides: A Growing Source of PFAS Contamination in the Environment DOI Creative Commons
Nathan Donley, Caroline Cox,

K. P. Bennett

et al.

Environmental Health Perspectives, Journal Year: 2024, Volume and Issue: 132(7)

Published: July 1, 2024

Environmental contamination by fluorinated chemicals, in particular chemicals from the per- and polyfluoroalkyl substances (PFAS) class, has raised concerns around globe because of documented adverse impacts on human health, wildlife, ecosystem quality. Recent studies have indicated that pesticide products may contain a variety meet PFAS definition, including active ingredients themselves. Given pesticides are some most widely distributed pollutants across world, legacy addition into could be widespread wide-ranging implications agriculture food water contamination, as well presence rural environments.

Language: Английский

Citations

14
Incorporating Transformation Products for an Integrated Assessment of Antibiotic Pollution and Risks in Surface Water DOI
Jingrun Hu,

Yitao Lyu,

Yi Liu

et al.

Environmental Science & Technology, Journal Year: 2025, Volume and Issue: 59(5), P. 2815 - 2826

Published: Jan. 30, 2025

The widespread presence of antibiotics in aquatic ecosystems is a global challenge, yet the occurrence and risks associated with their transformation products (TPs) remain poorly understood. This study investigated potential TPs water along Chaobai River Beijing. We used high-resolution mass spectrometry an integrated target, suspect, nontarget screening approach to identify 21 parent 78 among 90 samples, majority from macrolides sulfonamides. Notably, target quantification machine-learning-assisted semiquantification revealed that cumulative concentrations were higher than compounds, average contributions ranging between 50.7 63.7%. Most downstream samples largely influenced by domestic sewage, as indicated significantly proportions TPs, well greater diversity composition profiles compared upstream reservoir samples. Moreover, 26.9, 67.9, 6.4% exhibited persistence, mobility, or toxicity antibiotics, respectively. Sixteen macrolide presented both ecological organisms resistance selection antibiotics. contributed substantially overall antibiotic-related 31.2 54.1%. highlights antibiotic river water, underscoring need consider comprehensive risk assessments

Language: Английский

Citations

1
Pesticides in US Rivers: Regional differences in use, occurrence, and environmental toxicity, 2013 to 2017 DOI Creative Commons
S. M. Stackpoole, Megan E. Shoda, Laura Medalie

et al.

The Science of The Total Environment, Journal Year: 2021, Volume and Issue: 787, P. 147147 - 147147

Published: April 17, 2021

Pesticides pose a threat to the environment, but because of substantial number compounds, comprehensive assessment pesticides and an evaluation risk that they human aquatic life is challenging. In this study, improved analytical methods were used quantify 221 pesticide concentrations in surface waters over time period from 2013 2017. Samples collected 74 river sites conterminous US (CONUS). Potential toxicity was assessed by comparing water standard are considered have adverse effects on health or organisms. The majority use related agriculture, agricultural production varies across CONUS. Therefore, our results summarized region (Northeast, South, Midwest, West Pacific), with expectation crop differences would drive variability use, detection frequency, benchmark exceedance patterns. Although at least 2.5 times higher Midwest (49 kg km-2) than any other four regions West, Pacific, 3 21 average detected 1.5 (n = 25) 8 n 16), potential more evenly distributed. At 50% within each 5 had 1 chronic exceedance. Imidacloprid posed greatest total 245 exceedances 60 sites. These show persist environment beyond site application expected use. Continued monitoring research needed improve understanding life.

Language: Английский

Citations

49
Contaminant Exposure and Transport from Three Potential Reuse Waters within a Single Watershed DOI Creative Commons
Jason R. Masoner, Dana W. Kolpin, Isabelle M. Cozzarelli

et al.

Environmental Science & Technology, Journal Year: 2023, Volume and Issue: 57(3), P. 1353 - 1365

Published: Jan. 10, 2023

Global demand for safe and sustainable water supplies necessitates a better understanding of contaminant exposures in potential reuse waters. In this study, we compared load contributions to surface from the discharge three waters (wastewater effluent, urban stormwater, agricultural runoff). Results document substantial varying organic-chemical contribution effluent discharges (e.g., disinfection byproducts [DBP], prescription pharmaceuticals, industrial/household chemicals), stormwater polycyclic aromatic hydrocarbons, pesticides, nonprescription pharmaceuticals), runoff pesticides). Excluding DBPs, episodic storm-event organic concentrations loads were comparable often exceeded those daily wastewater-effluent discharges. We also assessed if irrigation corn resulted measurable effects on rain-induced harvested feedstock. Overall, target-organic 491 g study field during 2019 growing season did not produce dissolved organic-contaminant subsequent events. Out 140 detected organics source irrigation, only imidacloprid estrone had that observable differences between effluent-irrigated nonirrigated fields. Analyses pharmaceuticals per-/polyfluoroalkyl substances at-harvest corn-plant samples two antibiotics, norfloxacin ciprofloxacin, at 36 70 ng/g, respectively, samples; no contaminants noneffluent irrigated samples.

Language: Английский

Citations

20
Complete Reductive Dechlorination of 4-Hydroxy-chlorothalonil by Dehalogenimonas Populations DOI
Wenjing Qiao, Guiping Liu,

Mengya Li

et al.

Environmental Science & Technology, Journal Year: 2022, Volume and Issue: 56(17), P. 12237 - 12246

Published: Aug. 11, 2022

Chlorothalonil (2,4,5,6-tetrachloroisophthalonitrile, TePN) is one of the most widely used fungicides all over world. Its major environmental transformation product 4-hydroxy-chlorothalonil (4-hydroxy-2,5,6-trichloroisophthalonitrile, 4-OH-TPN) more persistent, mobile, and toxic frequently detected at a higher concentration in various habitats compared to its parent compound TePN. Further microbial 4-OH-TPN has never been reported. In this study, we demonstrated that underwent complete reductive dehalogenation 4-hydroxy-isophthalonitrile via 4-hydroxy-dichloroisophthalonitrile 4-hydroxy-monochloroisophthalonitrile. 16S rRNA gene amplicon sequencing Dehalogenimonas species was enriched from 6% 17–22% after dechlorination 77.24 μmol 4-OH-TPN. Meanwhile, copies increased by order magnitude obtained yield 1.78 ± 1.47 × 108 cells per Cl– released (N = 6), indicating served as terminal electron acceptor for organohalide respiration species. A draft genome assembled through metagenomic sequencing, which harbors 30 putative dehalogenase genes. Syntrophobacter, Acetobacterium, Methanosarcina spp. were found be non-dechlorinating populations community, who might play important roles This study first reports sp. can also respire on seemingly dead-end TePN, paving way biotransformation present TePN broadening substrate spectrum polychlorinated hydroxy-benzonitrile.

Language: Английский

Citations

27