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Vol. 26 No. 22 (2014): Vol 26 Issue 22

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FTIR of Soils from Different Areas of China

https://doi.org/10.14233/ajchem.2014.16889
Shuaiqun Zhao
School of Physics and Electronic Information, Yunnan Normal University, Kunming 650500, P.R. China
Gang Liu
School of Physics and Electronic Information, Yunnan Normal University, Kunming 650500, P.R. China
Quanhong Ou
School of Physics and Electronic Information, Yunnan Normal University, Kunming 650500, P.R. China
Xingxiang Zhao
School of Physics and Electronic Information, Yunnan Normal University, Kunming 650500, P.R. China
Jing Ren
School of Physics and Electronic Information, Yunnan Normal University, Kunming 650500, P.R. China
Juan Xu
School of Physics and Electronic Information, Yunnan Normal University, Kunming 650500, P.R. China
Jianming Hao
School of Physics and Electronic Information, Yunnan Normal University, Kunming 650500, P.R. China

Corresponding Author(s) : Gang Liu

gliu66@163.com

Asian Journal of Chemistry, Vol. 26 No. 22 (2014): Vol 26 Issue 22

Abstract

Fourier transform infrared spectroscopy (FTIR) was used to study five different types of soil. The results showed that the infrared spectra of soil were mainly composed of the absorption band of inorganic salts, such as carbonate, nitrate, phosphate, manganatem, etc., clay minerals and the organic matter. FTIR spectra of five types of soils are similar on the whole, but they present obvious difference in the range of 1600-750 cm-1. According to the first derivative spectra of five types of soils, the differences were mainly found displaying in the range of 1440, 875 and 798-780 cm-1. The first derivative data of the range of 1600-750 cm-1 were selected to use the Matlab 2010 to implement the principal component analysis, the contributing rates of the first two principal components had reached 90.14 %, which can reflect the main information in the spectra. The two-dimensional distribution was made by plotting these two principal components as scores plots, which provided a reliable and rapid method for the identification of soil type. It is demonstrated that FTIR technique is rapid, nondestructive, convenient, accurate and has a great potential for application.

Keywords

FTIR Soil Principal component analysis Soil identification
Zhao, S., Liu, G., Ou, Q., Zhao, X., Ren, J., Xu, J., & Hao, J. (2014). FTIR of Soils from Different Areas of China. Asian Journal of Chemistry, 26(22), 7581–7583. https://doi.org/10.14233/ajchem.2014.16889
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