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Found Toxicity 3 times.

Displaying results 1 to 10.

1. Toxicity
The term "toxicity" is used in two different senses. * Capacity to cause injury to a living organism; * Any adverse effects of a chemical on a living organism (see adverse effect ). The severity of toxicity produced by any chemical is directly proportional to the exposure concentration and the exposure time. This relationship varies with the developmental stage of an organism and with its physiological status.

2. Toxicity assessment
This is the process of defining the nature of injuries that may be caused to an organism by exposure to a given chemical and the exposure concentration and time dependence of the chemically induced injuries. The aim of the assessment is to establish safe exposure concentration limits in relation to possible time of exposure.

3. Toxicity test
Controlled laboratory test to determine the toxicity of a chemical to an organism in terms of specific chemical concentrations. An acute toxicity test establishes the concentration required to kill a predetermined proportion of test organisms within a relatively short period of time, typically 4 d or less. A chronic toxicity test reveals the effects of a sublethal concentration applied throughout all or part of the life cycle.

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