Method for measuring and calculating half-effect concentration of ecological toxicity effect of environmental pollutant

Abstract

The invention discloses a method for measuring and calculating half-effect concentration of an ecological toxicity effect of an environmental pollutant. The method is based on toxicity effect experiment results of single species, and comprises the following steps: constructing a community model by utilizing the ecological relationship among the populations; combining a plurality of reaction endpoints at different nutritional levels and population levels, and calculating the half-effect concentration of the ecological toxicity effect of the pollutants by taking the degree that a simplified planktonic community steady-state biomass array (P*, Q*, R*) deviates from an original steady-state biomass array (P0, Q0, R0) under a certain pollutant concentration as a criterion. According to the method. The ecological correlation of the toxic effect of the pollutants is considered, so that the accuracy and scientificity of measurement and calculation are improved; a large amount of existing single species toxicity effect experimental data can be fully utilized, and the cost is saved.

Description

technical field [0001] The invention relates to the field of environment, in particular to a method for measuring and calculating the half-effective concentration of the ecological toxicity effect of environmental pollutants. Background technique [0002] The scientific establishment of water quality standards is the basis for water ecosystem protection and environmental management, and the establishment of water quality standards is the scientific basis for the establishment of water quality standards. The scientific basis for the establishment of water quality standards is the relatively complete ecotoxicological data of pollutants of indigenous aquatic organisms and the indicators for scientifically judging the toxicity intensity of pollutants. The half-effective concentration with high sensitivity and good repeat stability is an important index to measure the toxicity intensity of pollutants. According to toxicological data, determining the half-effective concentration ...

AI Technical Summary

Problems solved by technology

Therefore, the current research on the half-effective concentration of the ecotoxicity effect of pollutants is mostly limited to single-species toxicity experiments, without considering the ecological correlation between ecosystem populations, which reduces the authenticity and reliability of the research results.

[0003] At present, there are no relevant reports on the scientific calculation of the half-effective concentration of the ecotoxicity effect of water environment pollutants that reflect the ecological relationship using the toxicity effect data at the population level of a single species.

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