Standard Guide for Conducting Acute Toxicity Tests on Aqueous Ambient Samples and Effluents with Fishes, Macroinvertebrates, and Amphibians

Importancia y uso:

5.1 An acute effluent toxicity test is conducted to obtain information concerning the immediate effects on test organisms of a short-term exposure to an effluent under specific experimental conditions. One can directly examine acute effects of complex mixtures of chemicals as occurs in effluents and some ambient waters. Acute effluent toxicity tests can be used to evaluate the potential for designated-use or aquatic life impairment in the receiving stream, lake, or estuary. An acute toxicity test does not provide information about whether delayed effects will occur, although a post-exposure observation period, with appropriate feeding if necessary, might provide such information.

5.2 Results of acute effluent tests might be used to predict acute effects likely to occur on aquatic organisms in field situations as a result of exposure under comparable conditions, except that (1) motile organisms might avoid exposure when possible, (2) toxicity to benthic species might be dependent on sorption or settling of components of the effluent onto the substrate, and (3) the effluent might physically or chemically interact with the receiving water.

5.3 Results of acute effluent tests might be used to compare the acute sensitivities of different species and the acute toxicities of different effluents, and to study the effects of various environmental factors on results of such tests.

5.4 Acute tests are usually the first step in evaluating the effects of an effluent on aquatic organisms.

5.5 Results of acute effluent tests will depend on the temperature, composition of the dilution water, condition of the test organisms, exposure technique, and other factors.

Subcomité:

E50.47

Referida por:

E0729-23E01, E1415-22, E0724-21, E1604-20, E1440-23, E1191-03AR23E01, E2591-22, E1022-22, E1241-22, E1711-20, E1193-20, E1850-04R19, E1218-21, E1366-23, E1611-21, E1295-22, E1563-21A, E1562-22, E1439-12R19

Volúmen:

11.09

Número ICS:

13.060.70 (Examination of water for biological properties)

Palabras clave:

acute toxicity; ambient samples; amphibians; EC50; effluents; freshwater fishes; freshwater invertebrates; LC50; saltwater fishes; saltwater invertebrates ;