Expanded Target-Chemical Analysis Reveals Extensive Mixed-Organic-Contaminant Exposure in U.S. Streams

Environmental Science & Technology, Год журнала: 2017, Номер 51(9), С. 4792 - 4802

Опубликована: Апрель 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.

Язык: Английский

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Hormones and Pharmaceuticals in Groundwater Used As a Source of Drinking Water Across the United States

Environmental Science & Technology, Год журнала: 2019, Номер 53(6), С. 2950 - 2960

Опубликована: Март 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.

Язык: Английский

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Urban Stormwater: An Overlooked Pathway of Extensive Mixed Contaminants to Surface and Groundwaters in the United States

Environmental Science & Technology, Год журнала: 2019, Номер 53(17), С. 10070 - 10081

Опубликована: Авг. 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.

Язык: Английский

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

Photochemical & Photobiological Sciences, Год журнала: 2017, Номер 16(2), С. 107 - 145

Опубликована: Янв. 26, 2017

Язык: Английский

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Active pharmaceutical ingredients entering the aquatic environment from wastewater treatment works: A cause for concern?

The Science of The Total Environment, Год журнала: 2017, Номер 613-614, С. 538 - 547

Опубликована: Сен. 26, 2017

Язык: Английский

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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

Environmental Science Processes & Impacts, Год журнала: 2017, Номер 19(9), С. 1185 - 1196

Опубликована: Янв. 1, 2017

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

Язык: Английский

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Occurrence and indicators of pharmaceuticals in Chinese streams: A nationwide study

Environmental Pollution, Год журнала: 2018, Номер 236, С. 889 - 898

Опубликована: Март 8, 2018

Язык: Английский

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Occurrence, toxic effects and removal of metformin in the aquatic environments in the world: Recent trends and perspectives

The Science of The Total Environment, Год журнала: 2019, Номер 702, С. 134924 - 134924

Опубликована: Ноя. 2, 2019

Язык: Английский

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Fate of Trace Organic Compounds in the Hyporheic Zone: Influence of Retardation, the Benthic Biolayer, and Organic Carbon

Environmental Science & Technology, Год журнала: 2019, Номер 53(8), С. 4224 - 4234

Опубликована: Март 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.

Язык: Английский

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Extended suspect screening to identify contaminants of emerging concern in riverine and coastal ecosystems and assessment of environmental risks

Journal of Hazardous Materials, Год журнала: 2020, Номер 404, С. 124102 - 124102

Опубликована: Окт. 2, 2020

Язык: Английский

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