endocrine disrupter Articles
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Enhanced treatment of endocrine disrupting chemicals by a granular bed electrochemical reactor
Continuous treatments of trace endocrine disrupting chemicals (EDCs) such as 17β-estradiol (E2), bisphenol-A, nonylephenol, 4-t-octyl phenol and pentachlorophenol were carried out using a granular bed electrolytic reactor. Experimental results showed that the EDCs were removed by the reactor over 150 days and removal efficiencies were nearly the same in the presence and absence of humic ...
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Effect of humic acid on the oxidation of phenolic endocrine disrupting chemicals by permanganate
The effect of dissolved humic acid on the oxidation of phenolic endocrine disrupting chemicals (EDCs) by potassium permanganate was studied. It was found that the degradation of phenolic EDCs is promoted to various extents by the addition of humic acid. Results show that the removal rate of estrone by permanganate within 3 min of reaction time is increased from approximately 10% in control ...
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Regulating endocrine disrupting chemicals - a success story?
Are you aware of which substances are classified as endocrine disrupting chemicals (EDC)? Do you carry out any operations involving EDC? These are the types of questions that are being considered by many companies in light of significant consumer, government and industry concern for EDC. In order to further delve into this topic, several companies and organisations attended an Enhesa webinar on ...
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Distinct mechanisms of endocrine disruption of DDT‐related pesticides toward ER α and ERR γ
Dichlorodiphenyl‐trichloroethane (DDT) is ubiquitous in the environment, and the exposure to DDT and its related pesticides has long been linked to endocrine disruption. The mechanism of endocrine disruption toward targeted receptors, however, remains unclear. Probing the molecular recognition of DDT analogs by targeted receptors at the atomic level is critical for deciphering this mechanism. ...
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Effects of 17α‐ethynylestradiol, fluoxetine and the mixture on life history traits and population growth rates in a freshwater gastropod
Pharmaceutical and personal care products (PPCPs), some of which have endocrine disrupting effects at environmentally relevant concentrations, have been detected in many surface waters. We evaluated the effects of two common endocrine disrupting PPCPs on the life history traits of the snail, Physa pomilia, using a life table response experiment with snails raised in environmentally relevant ...
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The application of membrane bioreactors as decentralised systems for removal of endocrine disrupting chemicals and pharmaceuticals
The concentrations of some important endocrine disrupting chemicals and pharmaceuticals after various stages of wastewater treatment were investigated. The endocrine disrupting chemicals included natural and synthetic estrogenic and androgenic steroids. The pharmaceuticals included a series of sulfonamide antibiotics and trimethoprim. The removal efficiency of a membrane bioreactor (MBR) was ...
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Organotin Compounds in the Three Gorges Reservoir Region of the Yangtze River
Tributyltins (TBT) are known endocrine disrupting chemicals (EDCs). It was reported that TBT at concentrations of more than 7 ng Sn/l would induce juvenile Buccium undatum to develop a penis and a vas deferens, i.e. imposex (Ten Hallers-Tjabbes et al. 2003). TBT in aquatic systems were also reported to be related to various symptoms such as thickening of shell and failure of spat in oyster ...
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Metformin exposure at environmentally relevant concentrations causes potential endocrine disruption in adult male fish
Pharmaceuticals and personal care products (PPCPs) are emerging contaminants that have been found ubiquitously in wastewater and surface waters around the world. A major source of these compounds is incomplete metabolism in humans and subsequent excretion in human waste, resulting in discharge into surface waters by wastewater treatment plant (WWTP) effluent. One pharmaceutical found in ...
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Tissue explant co‐culture model of the hypothalamic‐pituitary‐gonadal‐liver axis of the fathead minnow (Pimephales promelas) as a predictive tool for endocrine disruption
Endocrine disrupting compounds (EDCs) can impact the reproductive system by interfering with the hypothalamic‐pituitary‐gonadal (HPG) axis. While in vitro testing methods have been developed to screen chemicals for endocrine disruption, extrapolation of in vitro response to in vivo action shows inconsistent accuracy. We describe here our tissue co‐culture of the fathead minnow (Pimephales ...
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Screening of pharmaceuticals and endocrine disrupting compounds in water supplies of Cyprus
Cyprus is currently the leading country in antibiotic consumption among all European Union member countries and is likely to have a high consumption of pharmaceuticals overall. This reconnaissance type of project sought to investigate the occurrence of 16 pharmaceuticals, six known or suspected endocrine disrupting compounds (EDCs), two flame retardants, one insect repellant, and one fragrance ...
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EU Endocrine Disrupting criteria will have various implications for industry
In this article we examine the legal and political moves to regulate endocrine disruptors over the past 20 years and the most recent developments in this regard… There is growing concern in the EU and worldwide about the negative human health and environmental impacts possibly caused by endocrine disruptors. So, what are endocrine disruptors (ED)? They are chemicals that may interfere ...
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Sorption and toxicity reduction of pharmaceutically active compounds and endocrine disrupting chemicals in the presence of colloidal humic acid
This study investigated the toxicity changes and sorption of pharmaceuticals and endocrine disrupters in the presence of humic acid (HA). For the sorption experiment, a dead end filtration (DEF) system was used to separate bound and free-form target compounds. An algae growth inhibition test and E-screen assay were conducted to estimate the toxic effect of pharmaceutically active compounds ...
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Removal of pharmaceuticals and endocrine disrupting compounds through pilot- and full-scale riverbank filtration
Removal of a large suite of pharmaceuticals and endocrine disrupting compounds (EDCs) was measured through both pilot- and full-scale riverbank filtration (RBF) facilities. The pilot-scale RBF effectively reduced low ng/L concentrations of most compounds by greater than 90% following a 36-day experiment. Breakthrough of the conservative tracer occurred after 10 days and reached 90% recovery after ...
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Removal of endocrine disrupting compounds from wastewater using polymer particles
This study evaluated the use of particles of molecularly imprinted and non-imprinted polymers (MIP and NIP) as a wastewater treatment method for endocrine disrupting compounds (EDCs). MIP and NIP remove EDCs through adsorption and therefore do not result in the formation of partially degraded products. The results show that both MIP and NIP particles are effective for removal of EDCs, and NIP ...
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Estrogenic effects along the river Saale
Sediments along the river Saale, one of the main tributaries of the river Elbe, were characterized with the yeast estrogen screen to elucidate possible sources of endocrine‐disrupting compounds that might contribute to the downstream contamination of the river Elbe. At two sampling sites, elevated levels of estrogenic activity up to 55,000 ng ethinylestradiol equivalents per kilogram sediment ...
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Endocrine disrupting effect of the UV filter benzophenone‐3 in zebrafish, Danio rerio
The chemical UV filter benzophenone‐3 (BP‐3) is suspected to be an endocrine disruptor based on results from in vitro and in vivo testing. However, studies including endpoints of endocrine adversity are lacking. The present study investigated the potential endocrine disrupting effects of BP‐3 in zebrafish (Danio rerio) in the Fish Sexual Development Test (OECD TG 234) and a 12 day adult male ...
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Removal of Active Pharmaceutical Ingredients via Nyex Rosalox
Removal of API’s, EC’s & EDC’s via Nyex Rosalox™ Technology We recently discussed the removal of active pharmaceutical ingredients (API’s) and emerging contaminants (EC’s) in the environment – see Removal of Active Pharmaceutical Ingredients from Water . Endocrine Disrupting Chemicals (EDCs) is another category of compounds whose presence in the ...
By Coftec
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Reproductive Endocrine Disruption in a Sentinel Species (Chrysemys picta) on Cape Cod, Massachusetts
Freshwater turtles (Chrysemys picta) were collected from two sites on Cape Cod, MA. One site (Moody Pond), adjacent to the Massachusetts Military Reservation (MMR), was considered potentially impacted by toxic agents deriving from contaminant point sources on the MMR. The second (reference) site (Washburn Pond), to the east of the MMR, was considered not impacted by these pollutants and was ...
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Multiphase partitioning and risk assessment of endocrine‐disrupting chemicals in the Pearl River, China
Multiphase partitioning of endocrine‐disrupting chemicals (EDCs) in the Pearl River (China) were investigated. The colloidal concentrations for 4‐tert‐octylphenol, 4‐nonylphenol, bisphenol A (BPA), and estrone (E1) were in the ranges of 0.2 ng/L to 0.8 ng/L, 23.2 ng/L to 108 ng/L, 2.3 ng/L to 97.6 ng/L, and not detectable (nd) to 0.32 ng/L, respectively; for truly dissolved concentrations, the ...
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Impacts of pH-dependent metal speciation on the decomposition of triclosan by sulfate radicals
The presence of triclosan (TCS) in water resources has drawn significant attention due to its endocrine disruption potential. Sulfate radicals (SRs), generated particularly by the metal-mediated activation of peroxymonosulfate (PMS), have been proposed to effectively decompose TCS and many other pharmaceuticals and personal care products. In spite of its significance for understanding the ...
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