Ecotoxicology Articles
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What Are Phosphate Magnetic Particles?
Phosphonates or phosphonic acids are organic compounds containing C–PO(OH)2 or C–PO(OR)2 groups (where R = alkyl, aryl). Most phosphonates are highly water-soluble, while phosphonic acids are only sparingly soluble. Phosphonates are not volatile and are poorly soluble in organic solvents. Normally they are more efficient FRs than phosphates, but raw materials for phosphonates are more ...
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Project - Regulatory Risk R&D - Substance Tox and Legal Status Study
Client Producer of materials for automotive industry. Background Developing and implementing a new product/material for automotive industry is time consuming and costly process, so it is important that all parts including chemical substances are not under restrictions/authorisation or other regulatory preasure. Project goals Ekotox Centers were asked to analyse the risk for the key substance ...
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Polyacrylate Nanoparticles You Don’t Want to Miss
What are polyacrylates nanoparticles? Polyacrylates are an important class of soft, tough and rubbery polymers, which are known for their high transparency, good impact toughness and elasticity. Polyacrylates and their copolymers are one of the polymeric nanoparticles (NPs). Polymeric nanoparticles are particles within the size range from 1 to 1000 nm and can be loaded with active compounds ...
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Polyacrylate Nanoparticles You Don't Want to Miss
What are polyacrylates nanoparticles? Polyacrylates are an important class of soft, tough and rubbery polymers, which are known for their high transparency, good impact toughness and elasticity. Polyacrylates and their copolymers are one of the polymeric nanoparticles (NPs). Polymeric nanoparticles are particles within the size range from 1 to 1000 nm and can be loaded with active compounds ...
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Biodegradability Study on Filming Amines - FINEAMIN 06 - Case Study
Study conducted by Eurofins Ecotoxicologie France In a study conducted by Eurofins Ecotoxicologie France, FINEAMIN 06 has proved to be readily biodegradable, with a biodegradability rate of 90% after 28 days of test. To be considered as ready biodegradable, a product (mainly, a pure substance) must show a biodegradation rate of at least 70% in the 10-day interval which has to fall within the ...
By Fineamin SA
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Understanding Safety Data Sheets
In the last couple of decades, regulations concerning chemicals or other dangerous substances have been rapidly developing around the globe. Regulations prescribe several different obligations and requirements for the safe handling of chemicals. One of such obligations is a requirement for safety data sheets. While there are some differences between different regions and markets, it is an almost ...
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Biological Toxicity Monitoring of Seawater (Itoxcontrol)
Biological toxicity monitoring of Seawater The recorded death of fish in the river that flows out of the industrial zone of Scarlino has created the need of the installation of a biological alarm system. The decision was made to work with an automatic system, iTOXcontrol created by microLAN-The Netherlands represented in Italy by Ecotox Lds, which uses marine bacteria. The system compares the ...
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The Predictive Potential of a Battery of Ecotoxicological Tests for Human Acute Toxicity, as Evaluated with the First 50 MEIC Chemicals
Abstract : The acute toxicities of the first 50 chemicals (dextropropoxyphene hydrochloride excluded) of the multicentre evaluation of in vitrocytotoxicity (MEIC) programme were determined on four aquatic invertebrates and a bacterial strain (Photobacterium phosphoreumfor the MicrotoxTM test) commonly used in ecotoxicology testing. Three of the aquatic invertebrate tests consisted of cyst-based ...
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The use of Algae in Ecotoxicological Testing : a Review
Abstract :An intensive review on the use of algae in ecotoxicological testing is herein described. The state of the art in algal toxicity testing is given and the currently applied algal tests in hazard assessment schemes are emphasized. However, the need of an alternative, rapid and cost-effective algal tests is underscored considering the inequality between the plethora of new chemicals being ...
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Modelling of Human Acute Toxicity from Physicochemical Properties and Non-Vertebrate Acute Toxicity of the 38 Organic Chemicals of the MEIC Priority List by PLS Regression and Neural Network
Abstract :Linear and non-linear modelling of human acute toxicity (as human lethal concentrations; HLCs) of the 38 organic chemicals from the 50 priority compounds of the Multicentre Evaluation ofIn VitroCytotoxicity (MEIC) programme was investigated. The models obtained were derived either from a set of 23 physicochemicals properties of the compounds of from their acute toxicities to five ...
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Sensitivity of Microscale Ecotoxicity Tests and their Suitability to Measure Toxicity of Environmental Samples
Abstract : Aquatic microbiotests were selected and evaluated for their potential usefulness in measuring ecotoxicity in monitoring programs. Microbiotests are tests with aquatic invertebrates that demand a shorter exposure period and a smaller test volume than conventional aquatic ecotoxicity test methods. Microbiotests evaluated were the Thamnotox F test, the Rotox F test, the Algaltoxkit F ...
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Bioassays used for Detection of Ecotoxicity at Contaminated Areas
Abstract : Ten bioassays were used for the evaluation of acute, (sub)chronic toxicity and genotoxicity of an unknown soil from a military base and six model soils that were contaminated at former military bases with the major pollutants : kerosene, petroleum and used motor oil. The test species represented algae and higher plants, invertebrates and bacteria. The ability to detect toxicants in ...
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Microbiotests in Aquatic Ecotoxicology : Characteristics, Utility and Prospects
Abstract :Small-scale biological tests (microbiotests) have steadily increased in development and application over the last 30 years in the field of aquatic ecotoxicology. Multitrophic level assessment requirements, attractive features of microbiotests, and the constant search for simplicity and cost efficiency of testing are reasons explaining the expanding use of microbiotests. In this article, ...
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Ecotoxicity Assessment of Landfill Leachates using a Battery of Bioassay and Toxicity Characterization of the Leachates
Abstract : The western part of Teshima Island in the Seto Inland Sea (Japan) had been used as an illegal dumping ground for more than 10 years and the accumulated waste was estimated to be about 510.000 tons. There has been no systematic toxicity assessment conducted on this waste. In this study, a battery of bioassays was applied to the collected leachates. Toxicity of the leachates was ...
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Assessing the Quality of Natural Waters in Magnesia Prefecture in Greece using Toxkits
Abstract : In this study, the results of water quality analyses in the reservoir of the former Lake Karla in Magnesia prefecture in Greece are presented. Physical, chemical and ecotoxicological parameters were examined, the latter by application of 2 Toxkit microbiotests with crustaceans (Daphnia magna) and micro-algae (Selenastrum capricornutum). According to the classification criteria used for ...
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Ecotoxicology and Water Quality Standards
Abstract : The establishment of water quality objectives (WQO) for individual chemicals is a complex process fraught with many uncertainties. WQO should (in principle) be derived from no-observed-effect-concentrations (NOEC\'s) determined experimentally on selected test species and even preferably on biological communities in field situations. In practice this is seldom the case. The number of ...
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Suitability of Microscale Ecotoxicity Tests for Environmental Monitoring
Abstract : Aquatic microbiotests were selected and evaluated for their potential usefulness in measuring ecotoxicity in monitoring programs. In comparison with conventional aquatic ecotoxicity test methods they have the advantage of a shorter exposure period, a smaller test volume and (for many of them) the independence of culturing/maintenance of live stocks of test biota. The microbiotests ...
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A Procedure to assess Contaminated Soil Ecotoxicity
Abstract :Two polluted soil samples were assessed for both acute (Microtox®,Daphnia magna,Thamnocephalus platyurus) and chronic (Pseudokirchneriella subcapitata) toxicity, as well as for genotoxicity (Mutatox®). Bioassays were performed on soil water leachates and on soil solvent extracts to characterize not only the water soluble pollutants but also to evaluate less soluble pollutants or ...
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Cyst-Based Toxicity Tests. - II. Report of an International Intercalibration Exercise with 3 Cost-Effective Toxkits
Abstract : What very likely constituted the largest bioanalytical round robin exercise ever conducted in modern times was undertaken in Europe, the United States, and Canada to appraise the interlaboratory reliability and reproducibility of three new cost-efficient cyst-based toxicity test procedures. Close to 500 pre-packaged toxicity kits (Toxkits) of either freshwater Brachionus ...
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Toxicity Monitoring of Waste Waters from Tanneries with Microbiotests
Abstract : Waste waters from tanneries pose one of the most difficult problems for the treatment and subsequent discharge of such industrial effluents in surface waters. The biological breakdown of these wastes must be preceded by flocculation to prevent biomass inhibition from exposure to the toxicants present. Residual toxicity, however, persists in the supernatant after the chemical treatment, ...
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