Share Email Print
cover

Proceedings Paper

Quantitative analyses of tartaric acid based on terahertz time domain spectroscopy
Author(s): Binghua Cao; Mengbao Fan
Format Member Price Non-Member Price
PDF $14.40 $18.00

Paper Abstract

Terahertz wave is the electromagnetic spectrum situated between microwave and infrared wave. Quantitative analysis based on terahertz spectroscopy is very important for the application of terahertz techniques. But how to realize it is still under study. L-tartaric acid is widely used as acidulant in beverage, and other food, such as soft drinks, wine, candy, bread and some colloidal sweetmeats. In this paper, terahertz time-domain spectroscopy is applied to quantify the tartaric acid. Two methods are employed to process the terahertz spectra of different samples with different content of tartaric acid. The first one is linear regression combining correlation analysis. The second is partial least square (PLS), in which the absorption spectra in the 0.8-1.4THz region are used to quantify the tartaric acid. To compare the performance of these two principles, the relative error of the two methods is analyzed. For this experiment, the first method does better than the second one. But the first method is suitable for the quantitative analysis of materials which has obvious terahertz absorption peaks, while for material which has no obvious terahertz absorption peaks, the second one is more appropriate.

Paper Details

Date Published: 11 October 2010
PDF: 5 pages
Proc. SPIE 7656, 5th International Symposium on Advanced Optical Manufacturing and Testing Technologies: Optical Test and Measurement Technology and Equipment, 76561K (11 October 2010); doi: 10.1117/12.864957
Show Author Affiliations
Binghua Cao, China Univ. of Mining and Technology (China)
Mengbao Fan, China Univ. of Mining and Technology (China)


Published in SPIE Proceedings Vol. 7656:
5th International Symposium on Advanced Optical Manufacturing and Testing Technologies: Optical Test and Measurement Technology and Equipment

© SPIE. Terms of Use
Back to Top