title: [Numerical simulation and application of electrical resistivity survey in heavy metal contaminated sites].
abstract: In order to analyze the effects of electrical resistivity in heavy metal contaminated sites, we established the resistivity model of typical contaminated sites and simulate the DC resistivity method with Wenner arrays using the finite element method. The simulation results showed that the electrical method was influenced by the contamination concentration and the location of pollution. The more serious the degree of pollution was, the more obvious the low resistivity anomaly, thus the easier the identification of the contaminated area; otherwise, if there was light pollution, Wenner array could not get obvious low resistivity anomalies, so it would be hard to judge the contaminated area. Our simulation results also showed that the closer the contaminated areas were to the surface, the more easily the pollution was detected and the low resistivity anomalies shown in the apparent resistivity diagram were influenced by the Layered medium. The actual field survey results using resistivity method also show that the resistivity method can correctly detect the area with serious pollution.
authors.affiliation: School of Computer Science and Technology, Shandong Institute of Business and Technology, Yantai 264005, China. anguingwyl@yahoo.com.cn
authors.forename: Yu-ling
authors.initials: YL
authors.lastname: Wang
authors.forename: Chang-xin
authors.initials: CX
authors.lastname: Nai
authors.forename: Yan-wen
authors.initials: YW
authors.lastname: Wang
authors.forename: Lu
authors.initials: L
authors.lastname: Dong
mesh_terms: D000465:Algorithms; D002681:China; D003198:Computer Simulation; D017097:Electric Impedance; D004563:Electrochemistry / Q000379:methods; D004566:Electrodes; D004784:Environmental Monitoring / Q000379:methods; D004785:Environmental Pollutants / Q000032:analysis*; D007220:Industrial Waste / Q000032:analysis; D019216:Metals, Heavy / Q000032:analysis*; D012037:Refuse Disposal; D012989:Soil Pollutants / Q000032:analysis
chemical_list: D004785:Environmental Pollutants; D007220:Industrial Waste; D019216:Metals, Heavy; D012989:Soil Pollutants