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Detection of hydrocarbons in clay soils: A laboratory experiment using spectroscopy in the mid- and thermal infrared
Institution:1. Japan Atomic Energy Agency, 4-33, Muramatsu, Tokai-mura, Ibaraki 319-1194, Japan;2. Japan Atomic Energy Agency, 1-1-1, Kouto, Sayo-cho, Sayo-gun, Hyogo 679-5148, Japan;3. Shibaura Institute of Technology, 3-7-5, Toyosu, Koutouku, Tokyo 135-8548, Japan;4. Tokyo City University, 1-28-1, Tamazutsumi, Setagayaku, Tokyo 158-8557, Japan;5. National Institute for Quantum and Radiological Science and Technology, 1233, Watanukicho, Takasaki, Gunma 370-1292, Japan;1. School of Geosciences, China University of Petroleum(East China), Qingdao, 266580, China;2. China Coal Research Institute Xi''an Science and Industry Group, Xi''an, 710000, China;1. Low Level Radioactivity Laboratory, Institute of Nature and Environmental Technology, Kanazawa University, Nomi, Ishikawa 923-1224, Japan;2. Department of Environmental Biology and Chemistry, Faculty of Science, University of Toyama, Gofuku, Toyama 930-8555, Japan
Abstract:Remote sensing has been used for direct and indirect detection of hydrocarbons. Most studies so far focused on indirect detection in vegetated areas. We investigated in this research the possibility of detecting hydrocarbons in bare soil through spectral analysis of laboratory samples in the short wave and thermal infrared regions. Soil/oil mixtures were spectrally measured in the laboratory. Analysis of spectra showed development of hydrocarbon absorption features as soils became progressively more contaminated. The future application of these results airborne seems to be a challenge as present and future sensors only cover the diagnostic regions to a limited extent.
Keywords:Hydrocarbon  Soils  Hyperspectral  Pollution  Thermal infrared
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