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Nonparametric kernel density determination method for emergent environment event emergency disposal limit values

A non-parametric kernel density, emergency response technology, applied in data processing applications, electrical digital data processing, special data processing applications, etc., to achieve the effect of good distribution characteristics

Inactive Publication Date: 2017-07-04
CHINESE RES ACAD OF ENVIRONMENTAL SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0005] The purpose of the present invention is to provide a non-parametric method for constructing a species sensitivity distribution curve against the shortcomings of the current species sensitivity distribution parameter method modeling, thereby establishing a non-parametric kernel density estimation method based on a Gaussian kernel function to assess risk , and then determine the environmental concentration limit, and solve the standard determination technology in the emergency response to environmental emergencies

Method used

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  • Nonparametric kernel density determination method for emergent environment event emergency disposal limit values
  • Nonparametric kernel density determination method for emergent environment event emergency disposal limit values
  • Nonparametric kernel density determination method for emergent environment event emergency disposal limit values

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Embodiment 1

[0041] The method for determining the non-parametric kernel density of emergency response limits for environmental emergencies includes the following steps:

[0042] (1) Mercury (Hg) is an important heavy metal and a toxic pollutant of concern. It has a strong affinity with ligands of different insoluble cell structures, especially the nucleus and lysosomes, so its toxicity very big. Hg exists mainly in inorganic forms in natural water bodies, and Hg is mainly collected 2+ Toxicity data to freshwater aquatic organisms in China. Toxicity data comes from the US Environmental Protection Agency's ECOTOX database (http: / / cfpub.epa.gov / ecotox / ) and the literature included in China National Knowledge Network (http: / / www / cnki / net / ). Filtered out Hg 2+ The acute toxicity data of the compounds are for 90 species, including 9 plants, 33 vertebrates, including 26 fish, 7 amphibians; 48 invertebrates, including 25 crustaceans, and 23 other invertebrates.

[0043] Among them, the screen...

Embodiment 2

[0055] The method for determining the non-parametric kernel density of emergency response limits for environmental emergencies includes the following steps:

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Abstract

The invention relates to a determination method for emergent environment event emergency disposal limit values and specifically discloses a nonparametric kernel density determination method for emergent environment event emergency disposal limit values. The method comprises following steps: step 1. toxicity data screening; step 2. Gauss kernel function window width selecting; step 3. Gauss kernel function calculating of toxicity data; step 4. nonparametric kernel density estimation and determination of the toxicity data of distribution of species sensitivity based on Gauss kernel function; step 5. model verifying; and step 6. environment concentration limit values determination. According to the method of the invention, the fitting method of distribution curves of species sensitivity is improved; due to the improvement, the distribution features of toxicity data can be well estimated unbiasedly and accurate environment concentration limit values can be obtained so as to realize standard determination in emergent environment event emergency disposal.

Description

technical field [0001] The invention relates to a method for determining the emergency response limit value of an environmental emergency, in particular to a non-parameter kernel density determination method for the emergency response limit value of an environmental emergency. Background technique [0002] China is in the period of rapid industrialization and urbanization, and environmental emergencies occur frequently. Due to the complexity and uncertainty of the characteristic pollutants of emergent water environment incidents, the current national standards cannot fully meet the emergency response to emergent water environment incidents. and damage identification needs. After an emergency occurs, if there is no basis for relevant standards, if it is not disposed of in a timely and effective manner, it will cause serious environmental hazards; on the contrary, in the absence of relevant standards and blindly citing unreasonable standards, it may lead to excessive emergenc...

Claims

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Application Information

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IPC IPC(8): G06F19/00G06Q50/26
CPCG06F2219/10G06Q50/26G16Z99/00
Inventor 王颖郭飞武暕张琛白英臣王国静吴丰昌
Owner CHINESE RES ACAD OF ENVIRONMENTAL SCI
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