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THz Spectroscopy of Food, Industrial and Pharmaceutical Paraffin Wax

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Abstract:

The absorption coefficient spectra and refractive index spectra of food grade, industrial grade and pharmaceutical grade paraffin wax, the three different types of paraffin wax within the terahertz frequency range from 0.2 to 2.2 THz are measured using transmission-type terahertz time-domain spectroscopy. The average refractive indexes of food grade, industrial grade and pharmaceutical grade paraffin wax in the frequency range are respectively 1.50, 1.49 and1.46. The three different types of paraffin wax all have weak absorption for terahertz waves and each paraffin wax have several obvious absorption peaks. However, all found absorption peak positions of the three different types of paraffin wax are so close that the three are relatively difficult to be identified using transmission-type terahertz technique in present experimental conditions.

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Periodical:

Applied Mechanics and Materials (Volumes 602-605)

Pages:

2675-2679

DOI:

https://doi.org/10.4028/www.scientific.net/AMM.602-605.2675

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Online since:

August 2014

Authors:

Xu Sheng Kang, Ping Jie Huang*, Xian Li, Di Bo Hou, Jin Hui Cai, Guang Xin Zhang

Keywords:

Absorption Coefficient, Paraffin Wax, Refractive Index, Terahertz Spectroscopy

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© 2014 Trans Tech Publications Ltd. All Rights Reserved

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