endocrine disruptor Articles
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Effects of dissolved organic matter in landfill leachate on photodegradation of environmental endocrine disruptors
The direct and indirect photolysis of Environmental Endocrine Disruptors (EEDs) was investigated with and without Dissolved Organic Matter (DOM) extracted from landfill leachates. The results indicate that degradation of EEDs followed a pseudo-first-order. Photosensitised transformation of EEDs occurred because of the light absorption of DOM under sunlight irradiation while distinctive ...
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Washington: Safe for Humans?
Hundreds of U.S. businesses have already received in the mail test orders issued by the U.S. Environmental Protection Agency (EPA) for initial endocrine screening under the Endocrine Disruptor Screening Program (EDSP). Hundreds more will receive orders later this year. How recipients respond to an EDSP test order can present challenging issues. This article explains ...
By Acta Group
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Endocrine Disruptors: Test Orders Abound
In April 2009, EPA identified a final list of 67 chemicals for initial screening under the Endocrine Disruptor Screening Program (EDSP). From October 2009 to April 2010, the agency issued more than 700 test orders. Responding to an EDSP test order can present challenging issues. The agency began implementing this mandate well over a decade ago through the ...
By Acta Group
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EC Begins Public Consultations on Fitness Check of EU Legislation Regarding Endocrine Disruptors
As part of its Fitness Check of European Union (EU) legislation regarding endocrine disruptors, the European Commission (EC) has begun two public consultations: a public consultation (designed from a citizen’s perspective), and a stakeholder consultation (designed for stakeholders and experts). The public consultation will close March 9, 2020, and targets the general public. The stakeholder ...
By Acta Group
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The Endocrine Disruptor Screening Program: Where are we?
The U.S. Environmental Protection Agency (EPA) issued its final list of chemicals in the first group of substances that will be screened under the Endocrine Disruptor Screening Program (EDSP).1 Development of this list caps a long, thoughtful, and arduous administrative process that spans over a decade. This “Washington Watch” column briefly reviews the development of the program, with emphasis ...
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Endocrine Disruptors: The Issue Hits Closer to Home
The U.S. Environmental Protection Agency (EPA) recently released for comment the approach it intends to use for selecting the first group of chemicals to be screened in its Endocrine Disruptor Screening Program (EDSP). EPA is following a tiered approach in implementing its mandate under Section 408(p) of the Federal Food,Drug and Cosmetic Act (FFDCA). Section 408(p) directs the agency to develop ...
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EPA Identifies Endocrine Disruptor Chemicals
EPA identified an initial list of 64 pesticide active ingredients and nine HPV/pesticide inert chemicals to undergo Tier 1 screening in the EDSP. On June 18, 2007, EPA issued its long-awaited draft list of chemicals selected for so-called “Tier 1” screening under the Endocrine Disruptor Screening Program (EDSP). EPA repeatedly emphasized in the notice, as well as in other statements it prepared ...
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FAQs on micropollutants in natural waters
Micropollutants and their transformation products are being increasingly detected in Swiss waters. This is attributable partly to ever more powerful analytical methods, but also to a steady rise in the use of man-made substances. Public awareness of this issue has been heightened in particular by the findings of research on endocrine disruptors – e.g. the feminization of male fish due to ...
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Endocrine Disruptors
Overview: Substances that mimic, influence, or interfere with the body's endocrine system at certain doses, and produce potentially adverse developmental, reproductive, neurological, and/or immune effects in both humans and wildlife, are called endocrine disruptors. These substances can be naturally-occurring or man-made. Endocrine issues have long been the subject of intense regulatory interest ...
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Legal lookout: endocrine disruptors: test orders abound
As EPA plans to require chemical screening, industry is concerned how the information will be released and possibly misinterpreted. In April 2009, EPA identified a final list of 67 chemicals for initial screening under the Endocrine Disruptor Screening Program (EDSP). From October 2009 to April 2010, the agency issued more than 700 test orders. Responding to an EDSP test order can present ...
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Assessment of endocrine disruptors – DDTs and DEHP (plasticizer) in source water: a case study from Selangor, Malaysia
The presence of endocrine disruptors in source water is of great concern because of their suspected adverse effects on humans, even when present at very low levels. As the main source of potable water supply, rivers in Malaysia are highly susceptible to contamination by various endocrine disruptors originating from anthropogenic activities. In this study, the contamination levels of ...
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Reproductive impacts of tributyltin (TBT) and triphenyltin (TPT) in the hermaphroditic freshwater gastropod Lymnaea stagnalis
Tributyltin (TBT) and triphenyltin (TPT) are emblematic endocrine disruptors, which have been mostly studied in gonochoric prosobranchs. Although both compounds can simultaneously occur in the environment, they have mainly been tested separately for their effects on snail reproduction. Because large discrepancies in experimental conditions occurred in these tests, the present study aimed at ...
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Biodegradation of bisphenol A, 17 β-estradiol, and 17 α-ethynylestradiol in river water
The degradation of bisphenol A (BPA), 17 β-estradiol (E2), and 17 α-ethynylestradiol (EE2) in river water was investigated. Moreover, the effects of temperature, nutrient salts, easily degraded coexisting organic matter, and the addition of municipal wastewater, were studied. The half-lives of E2 are six days at 20°C and three days at 30°C in river water, respectively. BPA is degraded ...
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Improved analyte recovery with keeper solvents
Syncore Analyst: Evaporation to a defined volume with appendix, chiller and keeper solvent Polychlorinated biphenyls are suspected endocrine disruptors. They are enriched in the food chain which can result in elevated concentrations in fish and meat. The concentration of some PCBs is the subject of regulations and must be analyzed by reliable methods. Often, PCBs are extracted from a matrix. The ...
By BUCHI
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Ultrasonic degradation of 1-H-benzotriazole in water
This paper reports on the effect of different parameters of ultrasonic power, pollutant initial concentration, pH and the presence of co-existing chemical species (oxygen, nitrogen, ozone, and radical scavengers) on the ultrasonic degradation of the endocrine disruptor 1-H-benzotriazole. Increasing the 1-H-benzotriazole initial concentration from 41.97 to 167.88 μM increased the ...
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Update of the guidance about the preparation of dossiers for Annex XV of REACH
SVHC substances: what is the guidance update? ECHA published on the website an update of the guidance after a consultation process and taking into account both the modifications to the Annex XIII of REACH (according to Regulation N. 253/2011) and the experience of the competent authorities of Member States and of ECHA. The first version of the guidance dated back to 2007. The update involved a ...
By Selerant srl
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TEDx Woods Hole: Ecological Design and Water Reuse
Water is the basis of all life, and our planet faces deepening challenges related to water purity and availability. Jonathan Todd will discuss advanced ecological design projects, including future directions of sustainable wastewater and water management. This will include harvesting the carbon and nutrients from wastewater and converting them to energy and new resources. He will evaluate the ...
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Testosterone levels and fecundity in the hermaphroditic aquatic snail Lymnaea stagnalis exposed to testosterone and endocrine disruptors
Endocrine disruptors are known to alter endogenous free and esterified levels of androgenic and estrogenic steroid hormones in aquatic mollusks. The origin of steroids in these animals, however, remains controversial. In the present study, free and esterified testosterone concentrations were measured in the hermaphroditic aquatic gastropod Lymnaea stagnalis exposed to molecules known for their ...
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Effect of wastewater chlorination on endocrine disruptor removal
Endocrine disrupting chemicals (EDCs) are compounds of mainly anthropogenic origin that interfere with the endocrine system of animals and humans thus causing a series of disorders. Wastewater treatment plants are one of the major routes for transporting such chemicals to the water courses. In the context of this study, several chlorination batch tests were performed in order to assess the ...
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Endocrine disruptor screening program: Data sharing, compensation, protection
Now that EPA has published its list of the first chemicals to be screened under the EndocrineDisruptor Screening Program, the authors of this article say all technical registrantsof listed active ingredients, and all manufacturers and importers of listed inert ingredients,must begin to prepare for how they will address joint data development, cost sharing, datacompensation, and data protection. ...
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