Heavy Metal Pollution in City Topsoil Fuzzy Clustering Model

2012 ◽  
Vol 459 ◽  
pp. 199-202
Author(s):  
Xing Wang ◽  
Xue Jiao Li ◽  
Pu Ke ◽  
She Sheng Zhang
Keyword(s):  
Heavy Metal ◽  
Metal Pollution ◽  
Heavy Metal Pollution ◽  
Pollution Source ◽  
Metal Distribution ◽  
Dimension Theory ◽  
Surrounding Area ◽  
High Concentration ◽  
Heavy Metal Distribution ◽  
Clustering Model

It is a hot research project to find the heavy metal distribution in city topsoil and the level of pollution in city function region. Based on two dimension theory of Weiersreas, the eight heavy metal distribution is obtained, and the number of function region is calculated. Considering longitude and latitude of the polluted region, the high concentration distribution of heavy metals in area and the surrounding area is get. The pollution domain is found by using reverse Markov chain. The heavy metal pollution source is calculated from Gaussian diffusion model.

Heavy Metal Pollution in City Topsoil Fuzzy Clustering Model

2012 ◽  
Vol 459 ◽  
pp. 199-202
Author(s):  
Xing Wang ◽  
Xue Jiao Li ◽  
Pu Ke ◽  
She Sheng Zhang
Keyword(s):  
Heavy Metal ◽  
Fuzzy Clustering ◽  
Metal Pollution ◽  
Heavy Metal Pollution ◽  
Clustering Model

An Sample Analysis of Heavy Metal Pollution to Urban Surface Soil Based on Transfer Function Theory

2013 ◽  
Vol 446-447 ◽  
pp. 1516-1522
Author(s):  
Yang Shu ◽  
Hu Shu
Keyword(s):  
Heavy Metal ◽  
Transfer Function ◽  
Metal Pollution ◽  
Heavy Metal Pollution ◽  
Surface Soil ◽  
Function Theory ◽  
Pollution Index ◽  
Pollution Source ◽  
Spreading Process ◽  
Nemerow Integrated Pollution Index

The degree of heavy-metal pollution of different district in city area is discussed by improved Nemerow model and further topographic maps are drawn .From the improved Nemerow model, the Nemerow integrated pollution index is determined . The main reason of pollution is found according to weight, then the corresponding heavy-metal pollution things portion in the overall district is computed by using the model . The element that corresponds the maximum weight is found .And it proves that the heavy-metal pollution element Hg is the main pollution reason .The pollution source is determined by heavy metal spreading features using transfer function theory. Thinking of the main pollution elements as the researched object ,the spreading features are analized using transfer function characteristics. And the spreading process is described using flow chart.

Detection Model of Heavy Metal Pollution Source of City Surface Soil

2013 ◽  
Vol 329 ◽  
pp. 56-60
Author(s):  
Lian Qiu Wei
Keyword(s):  
Heavy Metal ◽  
Metal Pollution ◽  
Heavy Metal Pollution ◽  
Surface Soil ◽  
Rapid Development ◽  
Pollution Source ◽  
Detection Model ◽  
City Population ◽  
The Impact ◽  
The City

With the rapid development of city economy and increasing of city population , the impact of human activities on the environmental quality of the city is becoming more and more serious. The influence of human activity under the evolution model of city geological environment,has increasingly become the focus of attention. To make the analysis of these data through the concentration of heavy metals in the surface soil of the city, the location of sampling points and heavy metal concentrations of background value, establish a detection model of heavy metal pollution source about city surface soil.

Gradient Lattice Algorithm of Heavy Metal Pollution

2012 ◽  
Vol 459 ◽  
pp. 207-210
Author(s):  
Rui Gao ◽  
Xin Yun Liu ◽  
Xue Jiao Li ◽  
She Sheng Zhang
Keyword(s):  
Heavy Metal ◽  
Metal Pollution ◽  
Heavy Metal Pollution ◽  
Matrix Theory ◽  
Pollution Source ◽  
Search Model ◽  
Propagation Characteristics ◽  
Pollution Effects ◽  
Lattice Algorithm ◽  
Improved Model

A ladder search model is established by analyzing distribution and propagation characteristics of heavy metal in city topsoil. Based on matrix theory and graph theory, the ladder lattice path algorithm is given, the heavy metal pollution source points are found in industry region and other city zone. Considering the altitude, wind, rivers, time of heavy metal pollution effects, new improved model is get for the more accurate data of topsoil pollution

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