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28 February 2017 Terahertz spectral detection of potassium sorbate in milk powder
Pengpeng Li, Yuan Zhang, Hongyi Ge
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Proceedings Volume 10256, Second International Conference on Photonics and Optical Engineering; 102560A (2017) https://doi.org/10.1117/12.2268784
Event: Second International Conference on Photonics and Optical Engineering, 2016, Xi'an, China
Abstract
The spectral characteristics of potassium sorbate in milk powder in the range of 0.2~2.0 THz have been measured with THz time-domain spectroscopy(THz-TDS). Its absorption and refraction spectra are obtained at room temperature in the nitrogen atmosphere. The results showed that potassium sorbate at 0.98 THz obvious characteristic absorption peak. The simple linear regression(SLR) model was taken to analyze the content of potassium sorbate in milk powder. The results showed that the absorption coefficient increases as the mixture potassium sorbate increases. The research is important to food quality and safety testing.
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Pengpeng Li, Yuan Zhang, and Hongyi Ge "Terahertz spectral detection of potassium sorbate in milk powder", Proc. SPIE 10256, Second International Conference on Photonics and Optical Engineering, 102560A (28 February 2017); https://doi.org/10.1117/12.2268784
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KEYWORDS
Potassium
Millimeter wave sensors
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