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Sunday, May 17, 2020 | History

4 edition of The acute and chronic toxicity of chlorobenzenes to Ceriodaphnia found in the catalog.

The acute and chronic toxicity of chlorobenzenes to Ceriodaphnia

Scott Gordon Abernethy

The acute and chronic toxicity of chlorobenzenes to Ceriodaphnia

by Scott Gordon Abernethy

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Published by National Library of Canada = Bibliothèque nationale du Canada in Ottawa .
Written in English


Edition Notes

SeriesCanadian theses = Thèses canadiennes
The Physical Object
FormatMicroform
Pagination1 microfiche.
ID Numbers
Open LibraryOL16499360M
ISBN 100315583118
OCLC/WorldCa30971301

  This study evaluated acute and chronic nickel (Ni) toxicity to Ceriodaphnia dubia and Hyalella azteca with the objective of generating information for the development of a biotic ligand model for Ni. Testing with C. dubia was used to evaluate the effect of ambient hardness on Ni toxicity, whereas the larger H. azteca was used to derive lethal body burden information for . Hazard Class 6 contains poisonous materials () and infectious agents (). Division Poisonous material is a material, other than a gas, which is .

Chronic Toxicity Bioassay with Ceriodaphnia dubia: (1) An Evaluation of a Toxicity Test-Based Approach for Determining the Source of Chronic Toxicity and (2) An Evaluation of Culture/Dilution Waters and Diet as Determinants of Test Outcomes. Show full item record. Title:Cited by: 1. Acute Toxicity of Thallium to Daphnia magna and Ceriodaphnia dubia T.-S. Lin,1 P. Meier,2 J. Nriagu2 1 Department of Environmental Engineering and Health, Yuanpei University of Science and Technology, Yuan-Pei Street, Hsih-Chu City, , Taiwan 2 Department of Environmental Health Sciences, School of Public Health, University of Michigan, Ann Arbor, MI .

This method measures the chronic toxicity of effluents and receiving waters to the daphnid, Ceriodaphnia dubia, using less than 24h old neonates during a three-brood (seven-day), static renewal test. The effects include the synergistic, atagonistic, and additive effects of all the chemical, physical, and biological components which adversely. ecotoxicity, for the acute and chronic toxicity endpoints, 3 pH categories were distinguished within the acute and chronic ecotoxicity database: pH , > and > The lowest species-specific acute L(E)C 50 and chronic NOEC was selected as final hazard classification entry at the three pH levels and across pHs.


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The acute and chronic toxicity of chlorobenzenes to Ceriodaphnia by Scott Gordon Abernethy Download PDF EPUB FB2

Developed a less expensive modification of this test called the NC Ceriodaphnia Mini-Chronic Pass/Fail Toxicity Test. These tests are used to monitor discharges from wastewater treatment plants.

Failure to satisfy the requirements (evidence of either acute or chronic toxicity) of the discharge permit constitutes an effluent violation.

Chronic Toxicity to Freshwater Organisms This manual describes four- to seven-day methods for estimating the chronic toxicity of effluents and receiving waters to three species. The methods are approved under Clean Water Act section (h) and specified at 40 CFRTable I–A. Ceriodaphnia dubia, Survival and Reproduction Test; Chronic Toxicity.

Excerpt from: Short-term Methods for Estimating the Chronic Toxicity of Effluents and Receiving Waters to Freshwater Organisms.

4th edition () EPAR Modeling Acute and Chronic Toxicity of Nonpolar Narcotic Chemicals and Mixtures toCeriodaphnia dubia Renewal Toxicity Tests with Ceriodaphnia dubia, E –89, Am. Soc. Testing and Materials, Philadelphia () J.E.

Richter, S.F. Peterson, C.F. KleinerAcute and chronic toxicity of some chlorinated benzenes, chlorinated ethanes, Cited by: Theodore B. Henry and Marsha C. Black, Mixture and single‐substance acute toxicity of selective serotonin reuptake inhibitors in Ceriodaphnia dubia, Environmental Toxicology and Chemistry, 26, 8, (), ().

CHARACTERIZING THE CHRONIC TOXICITY OF ION MIXTURES TO CERIODAPHNIA DUBIA USING TWO EXPERIMENTAL DESIGNS A Thesis Presented to the Graduate School of Clemson University In Partial Fulfillment of the Requirements for the Degree Master of Science Environmental Toxicology by Katherine Anne Johnson May Accepted by.

Ceriodaphnia a good organism for testing the toxicity of freshwater. Natural waters can become poisonous to the organisms that live in those waters when pollutants enter the water in too high a concentration.

Toxicity refers to the effect on aquatic organisms, rather than to the concentration of the pollutants. This study evaluated acute and chronic nickel (Ni) toxicity to Ceriodaphnia dubia and Hyalella azteca with the objective of generating information for the development of a biotic ligand model for Ni.

Testing with C. dubia was used to evaluate the effect of ambient hardness on Ni toxicity, whereas the larger H. azteca was used to derive lethal body burden information for Ni by: Food is added to exposure solutions in cladoceran chronic toxicity tests and sometimes in acute toxicity tests, but its effects on the bioavailability of toxicants have not been studied extensively.

We compared the toxicity of waterborne Ag and Cu to Ceriodaphnia dubia in the presence or absence of food (a mixture of a yeast–Cerophyll Cited by: Acute and chronic toxicity of some chlorinated benzenes, chlorinated ethanes, and tetrachloroethylene to Daphnia magna.

Richter JE, Peterson SF, Kleiner CF. PMID: [PubMed - indexed for MEDLINE] Publication Types: Research Support, Non-U.S. Gov't; Research Support, U.S. Gov't, Non-P.H.S. MeSH Terms. Animals; Chlorobenzenes/toxicity Cited by:   The acute and chronic toxicity of nitrate (NO 3-N) to Ceriodaphnia dubia, Daphnia magna, and Pimephales promelas was investigated in h to d laboratory exposures.

The h median lethal concentration (LC50) of nitrate to C. dubia and D. magna neonates was mg/L NO 3 -N and mg/L NO 3 -N. The toxicity of chlorobenzenes to Tetrahymena growth metabolism was studied by microcalorimetry.

The growth constant (k), peak time (T) and generation times (T G) were 50 of chlorobenzenes was obtained through the kinetic parameters. The results suggested that the order of toxicity was 1,2,4-trichlorobenzene > o-dichlorobenzene > p Cited by: Comparative acute toxicity values for Ceriodaphnia dubia, Scapholeberis sp.

and Pimephales promelas exposed to copper were used to calculate water effect ratios (e.g., site. Chronic toxicity of chlordane, an organochlorine insecticide, was assessed on Ceriodaphnia dubia under standardized conditions of testing.

Results were. Based on previous research on the acute toxicity of major ions (Na+, K+, Ca2+, Mg2+, Cl, SO42, and HCO3/CO32) to C. dubia, two mathematical models were developed for predicting the LC50 for any ion mixture, excluding those dominated by K toxicity.

One model addresses a mechanism of general ion toxicity to which all ions contribute, and describes osmolarity-based LC50s as a. This instruction sheet is provided to aid in filling out the Acute or Chronic Whole Effluent Toxicity (WET) Test report forms as required by your National Pollutant Discharge Elimination System (NPDES) Permit.

If your permit requires acute WET testing, there will be one form to fill Size: 99KB. Food is added to exposure solutions in cladoceran chronic toxicity tests and sometimes in acute toxicity tests, but its effects on the bioavailability of toxicants have not been studied extensively.

We compared the toxicity of waterborne Ag and Cu to Ceriodaphnia dubia in the presence or absence of food (a mixture of a yeast--Cerophyll--trout Cited by: Fipronil is a phenylpyrazole pesticide that has greatly increased in popularity in recent years. As a chiral molecule, fipronil is released into the environment as a mixture (called a racemate) of its two enantiomers.

Previous toxicity work has indicated that the enantiomers of fipronil exhibit significantly different levels of acute toxicity to the nontarget organism Ceriodaphnia by:   The toxicities of 2,3,4,6-tetrachlorophenol (TeCP) and pentachlorophenol (PCP) were determined in standardized, single-species laboratory toxicity tests using daphnids and rotifers.

For Daphnia magna, h LC50 estimates with neonates indicated that PCP was more toxic than TeCP. The commercial TeCP formulation DIATOX®, containing a ratio of Cited by: Daphnia Toxicity Tests Ceriodaphnia Toxicity Test.

The CERIODAPHTOXKIT F Toxicity Test Kit is a 24h toxicity test for screening of pure compounds, effluents, sediments, surface, ground and waste waters. Like the Daphnia magna and Daphnia pulex the Ceriodaphnia toxicity testing kit contains all the materials necessary to perform six acute toxicity tests with the freshwater.

The LC50 values listed in Table E-1 are for toxicity associated with sodium chloride. The toxicity of chloride can vary depending upon the cations with which it is associated. Sodium chloride-based deicers were shown to have lower toxicity to rainbow trout, the water flea Ceriodaphnia dubia, and the alga Selenastrum capricornatum thanFile Size: 70KB.

Impact/Purpose: This paper is the first in a series regarding the toxicity of major geochemical ions to aquatic organisms. It covers initial efforts regarding how background water chemistry affects the acute toxicity of individual major ion salts to one test species, the principal findings being that calcium affects the toxicity of sodium and magnesium salts and sodium .Whole Effluent Toxicity Tests Required in Discharge Permit 48 -h acute whole effluent toxicity (WET) test using water flea Ceriodaphnia dubia 96 -h acute WET test using the fathead minnow (Pimephales promelas) WET Limit: median lethal concentration (LC 50) .