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Ecotoxicity Testing Articles & Analysis
56 articles found
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 ...
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 ...
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 ...
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. ...
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 ...
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 ...
Abstract : In this study a comparative chemical and toxicological analysis of 8 phenolic river water and wastewater samples originating from the Kohtla-Järve oil shale industry region (north-western part of Estonia) was made. The total phenolic content of the samples ranged from 0.01 to 195 mg/l. For 5 wastewaters the corresponding synthetic phenolic analogues were prepared. A battery of ...
Abstract : In the framework of the multicentre evaluation ofin vitrocytotoxicology (MEIC) programme, the first ten chemicals of the prescribed list were tested for acute toxicity in four standardised cyst-based aquatic invertebrate tests, consisting of two rotifer species (the estuarineBrachionus plicatilisand the freshwaterBrachionus calyciflorus) and two crustacean species (the halophilic ...
Abstract : The acute toxicity data of the first 50 chemicals of the Multicentre Evaluation of In Vitro Cytotoxicity (MEIC) programme is compared for three cyst-based toxicity tests (Artoxkit M with Artemia salina, Streptoxkit F with Streptocephalus proboscideusand Rotoxkit F with Brachionus calyciflorusand two other tests (the Daphnia magnaand the Photobacterium ...
Abstract :The influence of the dilution medium quality on the ecotoxicological response of test organisms using microbiotests was studied. The toxicity of reference toxicants (potassium dichromate, zinc sulfate, phenol) and of a landfill leachate and a process water discharged from a metal finishing plant was assessed in various dilution media including standard test media, 3 mineral waters and ...
Abstract : Management of toxic chemicals in the aquatic environment is performed in Japan by setting environmental standards by law. Forty-nine chemicals are regulated and measured once a month at specific sites in rivers and lakes. Many of these chemicals are detected at various places in Japan, but in concentrations below the standard values. Dioxins, which are not regulated, have been detected ...
Six Toxkit tests with a protozoan, micro-algae, rotifers and crustacean test species, and the IQ Toxicity Test™ (a rapid microbiotest using fluorescing enzyme split substrate) were used in the comparison. ...
Operators seeking next-generation hydraulic fluids typically expect to find products with a low-impact environmental footprint that meets both current and future regulations without skimping on the high-performance requirements some systems need. As a possible solution, EnBio Industries offers its EnBio fluids, a polyalkylene glycol-based lubricant with five characteristics that differentiate it ...
As an idea for the next scrimmage, participants suggested looking at common consumer products (g., sunscreen, antimicrobial textiles, carbon nanotubes in electronics) to determine if there is agreement among the CORs on exposure implications, as well as on potential impacts on human health or the environment. Ecotoxicity COR: The two main topics discussed during the ...
It includes the following changes, and the following section numbers refer to the updated numbering of the guidance: New advisory note (section 1.1) on testing for ecotoxicity and fate to provide overall advice for conducting ecotoxicity and environmental fate testing for nanomaterials; Update of section 1.2.1 on aquatic ...
Standard ecotoxicity tests are conducted under constant and favorable experimental conditions. ...
Pilot tests as basis for the design, implementation and operation of a future full-scale oxidation plant completing the existing sewage treatment in Linköping, Sweden, were performed. Using an ozonation step between bio-sedimentation and post-denitrification processes, the primary goal was the removal of the highest priority substances to effluent water levels that will not cause adverse ...
The sediment testing program was a multi‐institutional collaboration that involved extensive laboratory testing, field validation of laboratory findings, characterization of Ni behavior in natural and laboratory conditions, and examination of solid phase Ni speciation in sediments. The laboratory testing initiative was conducted in three phases ...
The ecotoxicity testing of chemicals for prospective environmental safety assessment is an area where a high number of vertebrates are used across a variety of industry sectors. Refining, reducing and replacing the use of animals such as fish, birds and amphibians for this purpose addresses the ethical concerns and the increasing legislative requirements to ...