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An integrated geophysical study of arsenic contaminated area in the peninsular Thailand
Luleå University of Technology, Department of Civil, Environmental and Natural Resources Engineering, Geosciences and Environmental Engineering.
Prince of Songkla University, HatYai.
Prince of Songkla University, HatYai.
2006 (English)In: Environmental Geology, ISSN 0943-0105, E-ISSN 1432-0495, Vol. 51, no 4, p. 595-608Article in journal (Refereed) Published
Abstract [en]

Geophysical surveys were carried out in an arsenic contaminated area, in the Ron Phibun District in southern Thailand. Here, tin and associated minerals, i.e. arsenopyrite and pyrite, have been extracted from granites and natural processes and the mining activities led to arsenic contamination in the environment. Electrical resistivity and self-potential (SP) were used to define the distribution of arsenic contamination in the groundwater. Resistivities of 25-100 Ωm and a positive SP anomaly of 66.0 mV were observed in an area where the arsenic content in auger water at 3.5-5.0 m depths was high, 0.5-5.0 mg/l. Integrated interpretation of resistivity, seismic refraction, GPR and gravity data gave a clear image of subsurface shallow structures (< 30 m depths). There was a good correlation between the resistivity and the gravity data. A subsurface rise was found, which possibly acts as a naturally buried dam, separating a high-contaminated area from a low contaminated area.

Place, publisher, year, edition, pages
2006. Vol. 51, no 4, p. 595-608
National Category
Geophysics
Research subject
Applied Geophysics
Identifiers
URN: urn:nbn:se:ltu:diva-9130DOI: 10.1007/s00254-006-0354-6ISI: 000242295200010Scopus ID: 2-s2.0-34548028013Local ID: 7b117320-d6fe-11db-8550-000ea68e967bOAI: oai:DiVA.org:ltu-9130DiVA, id: diva2:982068
Note
Validerad; 2006; 20070320 (ysko)Available from: 2016-09-29 Created: 2016-09-29 Last updated: 2018-07-10Bibliographically approved

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Wattanasen, KamhaengElming, Sten-åke

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