Research Article | OPEN ACCESS
Mechanism Analysis and Propagation Model of Heavy Metals Contamination in Urban Topsoil
1Zhao-wei Wang, 2Yuan-biao Zhang, 3Zi-yue Chen, 4Ke-jia Li, 4Jia-lin Hu and 4Yu-jie Liu
1Electrical Information College
2Mathematical Modeling Innovative Practice Base, Packaging Engineering Institute and
Key Laboratory of Product Packaging and Logistics of Guangdong Higher Education Institutes
3International Business School
4Electrical Information College, Jinan University, Zhuhai, 519070, China
Research Journal of Applied Sciences, Engineering and Technology 2013 5:1750-1755
Received: July 31, 2012 | Accepted: September 08, 2012 | Published: February 11, 2013
Abstract
In order to further research on the polluting condition and spreading features of heavy metals in urban surface soil, this study makes statistical analysis on indexes of 8 heavy metal concentrations. Then Are GIS geo-statistical analyst was used for Kriging interpolation of each kind of heavy metal concentration before figuring out the spatial distribution. Firstly, heavy metal contamination was analyzed by single-element pollution evaluation and multi-element pollution evaluation, before rationality analysis. Then, correlation extents between heavy polluting metals were calculated in each region by rationality analysis, leading to the correlations between the heavy metals. Finally, based on propagating features of different heavy metals, propagation models in water and atmosphere were established. Additionally, according to heavy metal distribution map, distribution point of high concentration was searched. With the assumption of the number of pollution source, theoretical concentration of sample point could be figured out, after the superposition of pollution intensity using propagation model based on data of the distribution points. Thus, the optimization model was established for locating the pollution source by minimizing the difference between theoretical value and actual value.
Keywords:
Diffusion model, heavy metal contamination, kriging interpolation, pollution evaluation,
Competing interests
The authors have no competing interests.
Open Access Policy
This article is distributed under the terms of the Creative Commons Attribution 4.0 International License (http://creativecommons.org/licenses/by/4.0/), which permits unrestricted use, distribution, and reproduction in any medium, provided you give appropriate credit to the original author(s) and the source, provide a link to the Creative Commons license, and indicate if changes were made.
Copyright
The authors have no competing interests.
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ISSN (Online): 2040-7467
ISSN (Print): 2040-7459 |
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