Watershed-Scale Risk to Aquatic Organisms from Complex Chemical Mixtures in the Shenandoah River DOI
Larry B. Barber, Kaycee E. Faunce, David W. Bertolatus

et al.

Environmental Science & Technology, Journal Year: 2022, Volume and Issue: 56(2), P. 845 - 861

Published: Jan. 3, 2022

River waters contain complex chemical mixtures derived from natural and anthropogenic sources. Aquatic organisms are exposed to the entire composition of water, resulting in potential effects at organismal through ecosystem level. This study applied a holistic approach assess landscape, hydrological, chemical, biological variables. On-site mobile laboratory experiments were conducted evaluate exposure Shenandoah Watershed. A suite 534 inorganic organic constituents analyzed, which 273 detected. watershed-scale accumulated wastewater model was developed predict environmental concentrations chemicals treatment plants (WWTPs) aquatic organism for all stream reaches watershed. Measured modeled generally within factor 2. Ecotoxicological individual components mixture evaluated using risk quotients (RQs) based on measured or predicted no effect chronic toxicity threshold values. Seventy-two percent compounds had RQ values <0.1, indicating limited chemicals. However, when RQs aggregated into index, most receiving WWTP effluent posed mixtures.

Language: Английский

Expanded Target-Chemical Analysis Reveals Extensive Mixed-Organic-Contaminant Exposure in U.S. Streams DOI Creative Commons
Paul M. Bradley, Celeste A. Journey, Kristin M. Romanok

et al.

Environmental Science & Technology, Journal Year: 2017, Volume and Issue: 51(9), P. 4792 - 4802

Published: April 12, 2017

Surface water from 38 streams nationwide was assessed using 14 target-organic methods (719 compounds). Designed-bioactive anthropogenic contaminants (biocides, pharmaceuticals) comprised 57% of 406 organics detected at least once. The 10 most-frequently anthropogenic-organics included eight pesticides (desulfinylfipronil, AMPA, chlorpyrifos, dieldrin, metolachlor, atrazine, CIAT, glyphosate) and two pharmaceuticals (caffeine, metformin) with detection frequencies ranging 66–84% all sites. Detected contaminant concentrations varied less than 1 ng L–1 to greater μg L–1, 77 278 having median 100 respectively. Cumulative detections ranged 4–161 compounds (median 70) 8.5–102 847 respectively, correlated significantly wastewater discharge, watershed development, toxic release inventory metrics. Log10 widely monitored HHCB, triclosan, carbamazepine explained 71–82% the variability in total number (linear regression; p-values: < 0.001–0.012), providing a statistical inference tool for unmonitored contaminants. Due multiple modes action, high bioactivity, biorecalcitrance, direct environment application (pesticides), designed-bioactive 41 per site cumulative concentrations) developed watersheds present aquatic health concerns, given their acknowledged potential sublethal effects sensitive species lifecycle stages low L–1.

Language: Английский

Citations

298
Hormones and Pharmaceuticals in Groundwater Used As a Source of Drinking Water Across the United States DOI Creative Commons
Laura M. Bexfield, Patricia L. Toccalino, Kenneth Belitz

et al.

Environmental Science & Technology, Journal Year: 2019, Volume and Issue: 53(6), P. 2950 - 2960

Published: March 5, 2019

This is the first large-scale, systematic assessment of hormone and pharmaceutical occurrence in groundwater used for drinking across United States. Samples from 1091 sites Principal Aquifers representing 60% volume pumped drinking-water supply had final data 21 hormones 103 pharmaceuticals. At least one compound was detected at 5.9% 844 resource public entirety 15 Aquifers, 11.3% 247 domestic over subareas nine Aquifers. Of 34 compounds detected, plastics component (bisphenol A), three pharmaceuticals (carbamazepine, sulfamethoxazole, meprobamate), caffeine degradate 1,7-dimethylxanthine were more than 0.5% samples. Hydrocortisone a concentration greater human-health benchmark 1 site. Compounds with high solubility low Koc most likely to be detected. Detections common shallow wells recent recharge, particularly crystalline-rock mixed land-use settings. Results indicate vulnerability water U.S. contamination by these generally limited, exposure concentrations unlikely have adverse effects on human health.

Language: Английский

Citations

222
Urban Stormwater: An Overlooked Pathway of Extensive Mixed Contaminants to Surface and Groundwaters in the United States DOI Creative Commons
Jason R. Masoner, Dana W. Kolpin, Isabelle M. Cozzarelli

et al.

Environmental Science & Technology, Journal Year: 2019, Volume and Issue: 53(17), P. 10070 - 10081

Published: Aug. 21, 2019

Increasing global reliance on stormwater control measures to reduce discharge surface water, increase groundwater recharge, and minimize contaminant delivery receiving waterbodies necessitates improved understanding of stormwater–contaminant profiles. A multiagency study organic inorganic chemicals in urban from 50 runoff events at 21 sites across the United States demonstrated that transports substantial mixtures polycyclic aromatic hydrocarbons, bioactive contaminants (pesticides pharmaceuticals), other known or suspected pose environmental health concern. Numerous organic-chemical detections per site (median number detected = 73), individual concentrations exceeding 10 000 ng/L, cumulative up 263 ng/L suggested concern for potential effects during events. Organic concentrations, loads, yields were positively correlated with impervious surfaces highly developed catchments. Episodic storm-event loads comparable often exceeded those daily wastewater plant discharges. Inorganic chemical generally dilute concentration did not exceed chronic aquatic life criteria. Methylmercury was measured 90% samples ranged 0.05 1.0 ng/L.

Language: Английский

Citations

217
Environmental effects of ozone depletion and its interactions with climate change: Progress report, 2016 DOI

Environmental Effects Assessment Panel

Photochemical & Photobiological Sciences, Journal Year: 2017, Volume and Issue: 16(2), P. 107 - 145

Published: Jan. 26, 2017

Language: Английский

Citations

208
Active pharmaceutical ingredients entering the aquatic environment from wastewater treatment works: A cause for concern? DOI
Sean Comber, Michael Gardner,

Pernilla Sörme

et al.

The Science of The Total Environment, Journal Year: 2017, Volume and Issue: 613-614, P. 538 - 547

Published: Sept. 26, 2017

Language: Английский

Citations

135
Development of suspect and non-target screening methods for detection of organic contaminants in highway runoff and fish tissue with high-resolution time-of-flight mass spectrometry DOI
Bowen Du‌,

Jonathan M. Lofton,

Katherine T. Peter

et al.

Environmental Science Processes & Impacts, Journal Year: 2017, Volume and Issue: 19(9), P. 1185 - 1196

Published: Jan. 1, 2017

Processing of paired water and tissue samples facilitated contaminant prioritization aided investigation chemical bioavailability uptake processes.

Language: Английский

Citations

109
Occurrence and indicators of pharmaceuticals in Chinese streams: A nationwide study DOI
Bo Yao, Shuwen Yan,

Lushi Lian

et al.

Environmental Pollution, Journal Year: 2018, Volume and Issue: 236, P. 889 - 898

Published: March 8, 2018

Language: Английский

Citations

101
Fate of Trace Organic Compounds in the Hyporheic Zone: Influence of Retardation, the Benthic Biolayer, and Organic Carbon DOI
Jonas Schaper, Malte Posselt, Camille Bouchez

et al.

Environmental Science & Technology, Journal Year: 2019, Volume and Issue: 53(8), P. 4224 - 4234

Published: March 24, 2019

The fate of 28 trace organic compounds (TrOCs) was investigated in the hyporheic zone (HZ) an urban lowland river Berlin, Germany. Water samples were collected hourly over 17 h and three depths HZ using minipoint samplers. four relatively variable time series subsequently used to calculate first-order removal rates retardation coefficients via a one-dimensional reactive transport model. Reversible sorption processes led substantial many TrOCs along flow path. Some TrOCs, such as dihydroxy-carbamazepine, O-desmethylvenlafaxine, venlafaxine, found be stable HZ. Others readily removed with half-lives first 10 cm ranging from 0.1 ± 0.01 for iopromide 3.3 0.3 tramadol. Removal rate constants majority highest HZ, where biodegradable dissolved matter also highest. Because conditions oxic top 30 path, we attribute this finding high microbial activity typically associated shallow Frequent short vertical exchange flows could therefore more important reach-scale TrOC than long, lateral paths.

Language: Английский

Citations

83
Occurrence, toxic effects and removal of metformin in the aquatic environments in the world: Recent trends and perspectives DOI
Gustavo Axel Elizalde-Velázquez, Leobardo Manuel Gómez‐Oliván

The Science of The Total Environment, Journal Year: 2019, Volume and Issue: 702, P. 134924 - 134924

Published: Nov. 2, 2019

Language: Английский

Citations

83
Heterogeneous Electro-Fenton as “Green” Technology for Pharmaceutical Removal: A Review DOI Open Access
Jéssica Meijide, Psm Dunlop, Marta Pazos

et al.

Catalysts, Journal Year: 2021, Volume and Issue: 11(1), P. 85 - 85

Published: Jan. 9, 2021

The presence of pharmaceutical products in the water cycle may cause harmful effects such as morphological, metabolic and sex alterations aquatic organisms selection/development resistant to antimicrobial agents. compounds’ stability persistent character hinder their elimination by conventional physico-chemical biological treatments thus, development new purification technologies has drawn great attention from academic industrial researchers. Recently, electro-Fenton process been demonstrated be a viable alternative for removal these hazardous, recalcitrant compounds. This occurs under action suitable catalyst, with majority current scientific research focused on heterogeneous systems. A significant area centres working an appropriate catalyst able overcome operating limitations associated homogeneous is concerned short service life difficulty separation/recovery polluted water. review highlights present trend use different materials catalysts compound environments. main challenges facing revolve around enhancement performance, long-term use, life-cycle analysis considerations cost-effectiveness. Although treatment efficiency improved significantly, ongoing efforts need deliver economic viability at larger scale due high costs, primarily related energy consumption.

Language: Английский

Citations

64