Ecological risk assessment method of polycyclic aromatic hydrocarbon compound and mixture thereof in marine water environment

A polycyclic aromatic hydrocarbon, ecological risk technology, applied in the field of environmental science and ecological risk assessment

Inactive Publication Date: 2014-06-11
NATIONAL MARINE ENVIRONMENTAL MONITORING CENTRE
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0004] Aiming at the problems existing in the existing ecological risk assessment methods for polycyclic aromatic hydrocarbons in the marine water environment, the present invention establishes an ecological risk assessment method system for polycyclic aromatic hydrocarbons and their mixtures in the Chinese marine wate

Method used

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  • Ecological risk assessment method of polycyclic aromatic hydrocarbon compound and mixture thereof in marine water environment
  • Ecological risk assessment method of polycyclic aromatic hydrocarbon compound and mixture thereof in marine water environment
  • Ecological risk assessment method of polycyclic aromatic hydrocarbon compound and mixture thereof in marine water environment

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Embodiment 1

[0048] Ecological risk of polycyclic aromatic hydrocarbons and their mixtures in subsurface waters of Daya Bay, South China Sea

[0049] (1) Conduct chemical analysis on the water samples collected from the target sea area to determine the types and concentrations of polycyclic aromatic hydrocarbons existing in the marine water environment:

[0050] The concentration data of polycyclic aromatic hydrocarbons (phenanthrene, pyrene and benzo[a]pyrene) in the subsurface waters of Daya Bay in the South China Sea were collected (Table 1) (Qiu Yaowen et al., 2004).

[0051]Table 1 Exposure concentrations (ng / L) of three PAHs at different stations in Daya Bay, South China Sea (Qiu Yaowen et al., 2004)

[0052]

[0053] (2) To test the normality of PAHs concentration distribution:

[0054] The Komogrov-Smirnov test was used to test the goodness of fit of the fitting distribution model results. When α=0.05, the test statistic was less than the critical value, indicating that the nul...

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Abstract

The invention discloses an ecological risk assessment method of a polycyclic aromatic hydrocarbon compound and a mixture thereof in a marine water environment. The assessment method comprises the following steps of determining the type and concentration of the polycyclic aromatic hydrocarbon in the marine water environment; screening the representative biological species having the flora characteristics of the creatures of the China sea area; acquiring the chronic toxicity data of polycyclic aromatic hydrocarbon in the water body of a target sea area; using a statistical extrapolation method to calculate the predicted no effect concentration of polycyclic aromatic hydrocarbon; using a joint probability curve method to calculate the level of the ecological risk of single polycyclic aromatic hydrocarbon in the water body of the target sea area; using a toxicity equivalent factor method to calculate the joint ecological risk of the polycyclic aromatic hydrocarbon mixture in the water body of the target sea area; identifying the risk of the monomer and the mixture of the polycyclic aromatic hydrocarbon according to the above results. The ecological risk assessment method of the polycyclic aromatic hydrocarbon compound and the mixture thereof in the marine water environment provided by the invention realizes the ecological risk assessment of the polycyclic aromatic hydrocarbon monomer and the mixture thereof in the China marine water environment by using the toxicity equivalent and the probability risk assessment method based on the species sensitivity distribution theory, and provides a decision basis for the marine ecological risk management of the China organic pollutants.

Description

technical field [0001] The invention relates to the fields of environmental science and ecological risk assessment, and more specifically relates to an ecological risk assessment method for polycyclic aromatic hydrocarbon compounds and mixtures thereof in marine water environments. Background technique [0002] In order to meet the management needs of China's marine environmental protection, support scientific decision-making of marine environmental protection, and promote a virtuous cycle of the ecosystem, it is necessary to improve the evaluation method system of China's marine environmental quality and carry out forward-looking research on ecological risk assessment of toxic and harmful organic pollutants . Ecological risk assessment is developed under the framework of risk management, focusing on evaluating the adverse changes in the ecosystem caused by human activities, and finally providing decision support for risk management. The ecological risk assessment of organi...

Claims

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Application Information

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IPC IPC(8): G06F19/00G01N33/00
Inventor 王莹姚子伟林忠胜王菊英穆景利
Owner NATIONAL MARINE ENVIRONMENTAL MONITORING CENTRE
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