Bioactive contaminants of emerging concern in National Park waters of the northern Colorado Plateau, USA

The Science of The Total Environment, Journal Year: 2018, Volume and Issue: 636, P. 910 - 918

Published: May 2, 2018

Language: Английский

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Toxicity identification fractionation of environmental estrogens in waste water and sludge using gas and liquid chromatography coupled to mass spectrometry and recombinant yeast assay

Analytical and Bioanalytical Chemistry, Journal Year: 2008, Volume and Issue: 393(3), P. 957 - 968

Published: Dec. 4, 2008

Language: Английский

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Environmental contaminants in freshwater fish and their risk to piscivorous wildlife based on a national monitoring program

Environmental Monitoring and Assessment, Journal Year: 2008, Volume and Issue: 152(1-4)

Published: July 1, 2008

Language: Английский

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Sources and Distribution of Organic Compounds Using Passive Samplers in Lake Mead National Recreation Area, Nevada and Arizona, and Their Implications for Potential Effects on Aquatic Biota

Journal of Environmental Quality, Journal Year: 2010, Volume and Issue: 39(4), P. 1161 - 1172

Published: July 1, 2010

The delineation of lateral and vertical gradients organic contaminants in lakes is hampered by low concentrations nondetection many compounds water. Passive samplers (semipermeable membrane devices [SPMDs] polar chemical integrative [POCIS]) are well suited for assessing because they can detect synthetic (SOCs) at pg L −1 concentrations. Semi‐permeable POCIS were deployed Lake Mead, two sites Las Vegas Wash, four across the Colorado River downstream from Hoover Dam. Concentrations hydrophobic SOCs highest Wash waste water urban inputs 8 m depth Bay (LVB) where enters Mead. distribution showed a 10 km Mead LVB to Boulder Basin. To assess possible SOCs, SPMDs 4‐m intervals 18 LVB. Fragrances legacy found greatest deepest depth. gradient indicated that generally confined within 6 lake bottom during deployment interval. high SOC concentrations, warmer temperatures, higher total dissolved solids indicative plume moving along bottom. discussed context other studies have shown impaired health fish exposed SOCs.

Language: Английский

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Ecotoxicology of polychlorinated biphenyls in fish—a critical review

Critical Reviews in Toxicology, Journal Year: 2015, Volume and Issue: 45(8), P. 643 - 661

Published: May 6, 2015

Polychlorinated biphenyls (PCBs) are widespread persistent anthropogenic contaminants that can accumulate in tissues of fish. The toxicity PCBs and their transformation products has been investigated for nearly 50 years, but there is a lack consensus regarding the effects these environmental on wild fish populations. objective this review to critically examine investigations evaluate publicly available databases evidence Biological activity limited small proportion PCB congeners [e.g., dioxin-like (DL-PCBs)] occurs at concentrations typically orders magnitude higher than levels detected Induction biomarkers consistent with exposure (e.g., induction cytochrome P450 monooxygenase system) evaluated frequently shown be induced from some environments, does not appear reports damage (i.e., effect) biomolecules oxidative injury) Numerous endocrine system dysfunction or other organ systems have conducted fish, collectively no Early life stage DL-PCBs occur reported embryos, results do support an association between decreased survival early stages Overall, appears little had any effect health

Language: Английский

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Vitellogenin levels and others biomarkers show evidences of endocrine disruption in fish species from Iguaçu River - Southern Brazil

Chemosphere, Journal Year: 2017, Volume and Issue: 186, P. 88 - 99

Published: July 24, 2017

Language: Английский

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Estrogenic Compounds: Chemical Characteristics, Detection Methods, Biological and Environmental Effects

Water Air & Soil Pollution, Journal Year: 2018, Volume and Issue: 229(5)

Published: April 22, 2018

Language: Английский

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Site-Specific Profiles of Estrogenic Activity in Agricultural Areas of California’s Inland Waters

Environmental Science & Technology, Journal Year: 2009, Volume and Issue: 43(24), P. 9110 - 9116

Published: Nov. 18, 2009

To evaluate the occurrence and sources of compounds capable feminizing fish in agriculturally impacted waterways Central Valley California, water samples were extracted subjected to chemical analyses as well vitro vivo measurements vitellogenin juvenile rainbow trout (Oncorhynchus mykiss). Among 16 sites sampled, 6 locations frequently exhibited elevated concentrations estrogenic substances with 17beta-estradiol equivalents up 242 ng/L 12 microg/kg vivo. The patterns activity varied among sites, two showing only vitro, vivo, both assays. Sequential elution solid-phase extraction (SPE) disks followed by bioassay-guided fractionation was used characterize from where observed bioassays. highest most nonpolar fractions (80-100% methanol eluent) Napa River, while Sacramento River Delta eluted 60% eluent. Quantitative SPE extracts additional HPLC GC-MS/MS LC-MS/MS indicated steroid hormones, alkylphenol polyethoxylates, herbicides that at least 1-3 orders magnitude below bioassay equivalent calculations. Given different properties compounds, it appears these surface waters is attributable multiple compounds. Further investigation needed identify causing determine potential impacts on feral fish.

Language: Английский

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Plasma vitellogenin in male teleost fish from 43 rivers worldwide is correlated with upstream human population size

Environmental Pollution, Journal Year: 2010, Volume and Issue: 158(10), P. 3279 - 3284

Published: Aug. 14, 2010

Language: Английский

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Concentration of organic contaminants in fish and their biological effects in a wastewater-dominated urban stream

The Science of The Total Environment, Journal Year: 2012, Volume and Issue: 420, P. 191 - 201

Published: Feb. 15, 2012

Language: Английский

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