toxicity testing Articles
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Developing a national water quality criteria system in China
Water quality criteria (WQC) form a scientific basis for the development of water quality standards. The study of WQC in China has been insufficient. This mini review introduces the progress that has been made towards the establishment of a WQC system in China. A systematic WQC study has been ongoing in China for several years, mainly referring to the WQC system in the United States. Some ...
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Evaluation of Toxkits as Methods for Monitoring Water Quality in New Zealand
Abstract :The Resource Management Act 1991, of New Zealand, requires local authorities and industry to apply for consent to discharge effluent to water or land. The requirement for whole effluent toxicity testing is now being included in these Resource Consents. The Ministry for the Environment (MfE) has encouraged research which evaluates technology used to monitor environmental parameters (e.g. ...
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Modern water`s toxicity monitor used for river clean-up research case study
Modern Water pic (AIM:MWG), the owner of leading water technologies for the production of fresh water and monitoring of water quality, has collaborated with the Unwersity of Central Florida (UCF) to supply a Microtox® M500 toxicity monitor. The monitor will assist with research into acVanced treatment techniques which could provide a solution to the removal of Total Phosphorus from the Middle ...
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Increasing uranium exposure durations to the aquatic snail, Amerianna cumingi, does not result in lower toxicity estimates
Reproductive inhibition (egg production) of the aquatic snail, Amerianna cumingi, over 4 d has been used to derive toxicity estimates for toxicants of concern in tropical Australia. Toxicity estimates from this test have been used as chronic data points in Species Sensitivity Distributions (SSD) for deriving site‐specific guideline values (GVs). However, revised guidance for the Australian and ...
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Toxicity Monitoring of the Scheldt and Meuse Rivers in Wallonia (Belgium) by Conventional Tests and Microbiotests
Abstract : The Microtox acute toxicity test using the luminescent bacterium Vibrio fischeri, was chosen as a complementary descriptive parameter of toxic pollution in the framework of monitoring surface water quality in Wallonia, Belgium. In order to examine the samples on a routine basis, ensure a cost-effective approach adapted to the dilution effects, and enhance the sensitivity of the system, ...
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Optical bioassay for measuring sublethal toxicity of insecticides in Daphnia pulex
Many emerging contaminants tend to be biologically active at very low concentrations, occur in water as part of complex mixtures, and impact biota in ways that are not detected using traditional toxicity tests (e.g., median lethal concentration). To evaluate emerging contaminants, the authors developed a method for detecting sublethal behavioral effects by quantifying the swimming behavior of ...
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Comparative study on toxicity evaluation of anaerobically treated parboiled rice manufacturing wastewater through fish bioassay
Short term aquatic bioassay has been developed into a useful tool in water quality management. These tests give information on comparative toxicity of several compounds. The objective of this study was to evaluate the acute toxicity of raw and anaerobically treated effluents of the parboiled rice manufacturing industry. The acute toxicity test was carried out by using the fish Lebistes ...
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The common ecotoxicology laboratory strain of Hyalella azteca is genetically distinct from most wild strains sampled in eastern North America
The amphipod Hyalella azteca is commonly used as a model for determining safe concentrations of contaminants in freshwaters. We sequenced the mitochondrial cytochrome c oxidase subunit I (COI) gene for representatives of 38 populations of this species complex from US and Canadian toxicology research laboratories and eastern North American field sites to determine their genetic relationships. ...
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Toxicity Evaluations of Wastewaters in Austria with Conventional and Cost-Effective Bioassays
Abstract : The acute toxicity of 42 samples of different types of domestic and industrial discharges was assessed with a battery tests comprising the standard Daphnia magna bioassay and three cost-effective new microbiotests (cyst-based Toxkits) : the Rotoxkit F with the freshwater rotifer Brachionus calyciflorus and the Streptoxkit F and Thamnotoxkit F tests with the freshwater fairy shrimps ...
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Use of Daphnia spp. for the Ecotoxicological Assessment of Water Quality in an Agricultural Watershed in South-Central Chile
Because of the importance of surface waters from the Chillán River watershed (Chile) for recreation, agricultural irrigation, and the production of drinking water, local concern about river water quality has increased considerably during the last decade. Agricultural and forestry activities in the watershed, characterized by an intensive use of pesticides, are thought to play an important role in ...
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Realistic environmental mixtures of micropollutants in surface, drinking and recycled water: Herbicides dominate the mixture toxicity towards algae
Mixture toxicity studies with herbicides have focused on a few priority components that are most likely to cause environmental impacts and experimental mixtures were often designed as equipotent mixtures; however, real world mixtures are made up of chemicals with different modes of toxic action at arbitrary concentration ratios. The toxicological significance of environmentally realistic ...
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Down with road dust
There are more than 3.9 million miles of roadway in the United States, according to the Federal Highway Administration, and, depending on the area of the country you're in, as much as 70% of that road mileage is unpaved. The 1997 U.S. Environmental Protection Agency (EPA) National Air Quality and Emissions Trends Report states that those unpaved roads--which can cover a wide range of ...
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