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http://dx.doi.org/10.9727/jmsk.2016.30.1.31

Heavy Metal Contamination Characteristics and Spectral Characteristics of White Precipitation occurring at Miin Falls Drainage  

Lim, Jeong Hwa (Department of Astronomy, Space Science and Geology, Chungnam National University)
Yu, Jaehyung (Department of Geology and Earth Environmental Sciences, Chungnam National University)
Shin, Ji Hye (Department of Astronomy, Space Science and Geology, Chungnam National University)
Jeong, Yong Sik (Department of Astronomy, Space Science and Geology, Chungnam National University)
Koh, Sang-Mo (Convergence Research Center for Development of Mineral Resources, Korea Institute of Geoscience and Mineral Resources)
Park, Gyesoon (Convergence Research Center for Development of Mineral Resources, Korea Institute of Geoscience and Mineral Resources)
Publication Information
Journal of the Mineralogical Society of Korea / v.30, no.1, 2017 , pp. 31-43 More about this Journal
Abstract
This study investigated mineralogy, spectral characteristics and heavy metal contamination including Cd, Ni, Al, Fe, Mn and S for white precipitation in Miin falls based on XRF, XRD, and spectrometer. As a result, Al concentration was abnormally high at all samples, and most of the samples showed high contamination level in Cd and Ni. XRD results detected quartz, kaolinite, rhomboclase, aluminocoquimbite, and gibbsite which infers that heavy metal elements are distributed by adsorption with clay minerals. Spectral characteristics of white precipitation can be described by increasing pattern of reflectance in visible spectrum and decreasing pattern of reflectance in longer wave length including near infrared and shortwave infrared spectrum. The absorption features reveals that spectral characteristics of white precipitation is mainly controlled by kaolinite, rhomboclase, aluminocoquimbite, and gibbsite. The relationship between heavy metal concentration and absorption depth showed high positive correlation for Al concentration and absorption feature at 2202 nm of Al-OH absorption. This spectral characteristics indicates that absorption depth could be effectively used for estimation of heavy metal concentration.
Keywords
Miin falls; whitening event; heavy metal contamination characteristics; spectral characteristics;
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Times Cited By KSCI : 9  (Citation Analysis)
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