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Method for recognizing heavy metal pollution source in soil

A technology for pollution sources and heavy metals, applied in the field of heavy metal pollution source analysis, can solve the problem that the contribution rate of emission sources cannot be given, and achieve the effect of strong practicability and widespread application value.

Inactive Publication Date: 2016-06-01
NORTH CHINA INST OF AEROSPACE ENG
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Problems solved by technology

[0004] The purpose of the present invention is to provide a method for identifying the source of heavy metals in soil based on the K-means cluster analysis method, which overcomes the defect that the traditional heavy metal pollution source analysis method cannot give the contribution rate of the specific emission source

Method used

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  • Method for recognizing heavy metal pollution source in soil
  • Method for recognizing heavy metal pollution source in soil
  • Method for recognizing heavy metal pollution source in soil

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Experimental program
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Embodiment

[0061] Step 1. The Jinjiang River Basin is used as the investigation area for heavy metal pollution.

[0062] Step 2, the data comes from the heavy metal content in the sediments of the Jinjiang River Basin, and the surface sediment samples of 10 stations were collected with a grab sampler.

[0063] Step 3: According to the survey area, determine the heavy metals to be investigated as As, Hg, Cd, Cr, and Pb, and take a total of 10 monitoring points.

[0064] Steps 4 to 7 refer to the following data analysis, in which data standardization processing and clustering analysis are completed with the help of SPSS statistical analysis software and programs edited by Matlab. The main analysis is as follows:

[0065] This data analysis mainly carried out K-means cluster analysis on As, Hg, Cd, Cr, and Pb, and the results are as follows:

[0066] Table 1 and Table 2 are the initial classification center and final classification center respectively, which are actually 2 types of classif...

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Abstract

The invention discloses a method for recognizing a heavy metal pollution source in soil on the basis of a K-means clustering method. The method is applied to the pollution source recognition on a pollution source recognition composite model through K-means clustering-main ingredient analysis; the sources of heavy metal contaminants can be fast and accurately traced; the contribution rate of each contaminant is given; the reliable technical guarantee is provided for an environment management department to deal with pollution accidents and to control the pollution risk; and the defects that in the prior art, the contribution rate of a concrete discharging source on a receptor cannot be given, and practical guidance significance cannot be realize on the pollution control work are overcome.

Description

technical field [0001] The invention belongs to the technical field of heavy metal pollution source analysis, and in particular relates to a method for identifying heavy metal sources in soil based on a K-means cluster analysis method. Background technique [0002] Pollution source identification technology is a method to identify, analyze and evaluate the source of pollutants. The current pollution source identification technology can be roughly divided into three types: inventory analysis method, diffusion model and receptor model. The inventory analysis method is a source apportionment method to establish a list model by observing and simulating the source emissions, emission characteristics, and geographical distribution of pollutants; the diffusion model is a predictive model, which is input by inputting the emission data of each pollution source and Relevant parameter information is used to predict the spatial and temporal changes of pollutants; the receptor model is ...

Claims

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Application Information

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IPC IPC(8): G06F19/00
CPCG16Z99/00
Inventor 陈锋张云峰曹张伟戈源运刘晓立王红梅
Owner NORTH CHINA INST OF AEROSPACE ENG
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