Frontiers of Optoelectronics, 2015, 8 (1): 1, 网络出版: 2015-04-20  

Detecting NO-3 concentration in nitrate solutions using terahertz time-domain spectroscopy

Detecting NO-3 concentration in nitrate solutions using terahertz time-domain spectroscopy
作者单位
1 State Key Laboratory of Petroleum Resources and Prospecting, China University of Petroleum, Beijing 102249, China
2 Key Laboratory of Oil and Gas Terahertz Spectroscopy and Photoelectric Detection, China Petroleum and Chemical Industry Federation (CPCIF), Beijing 100723, China
3 Beijing Key Laboratory of Optical Detection Technology for Oil and Gas, China University of Petroleum, Beijing 102249, China
摘要
Abstract
In this paper, we employed terahertz time domain spectroscopy (THz-TDS) to investigate the nitrate () concentration in four types of nitrate solution (sodium nitrate, aluminum nitrate, calcium nitrate and magnesium nitrate). Their absorption coefficient and refractive index were calculated in 0.2–2.5 THz, and a logarithmic relationship was observed between NO–3 concentrations and selected optical parameters regardless of the kinds of nitrate solution. Partial least square (PLS) model was built between THz-TDS and NO–3 concentration. The correlation coefficient of PLS model was calculated. The results make the quantitative analysis of NO–3 concentration possible by THz-TDS and indicate the bright future in practical application.
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Qian LI, Honglei ZHAN, Fangli QIN, Wujun JIN, Honglan LIU, Kun ZHAO. Detecting NO-3 concentration in nitrate solutions using terahertz time-domain spectroscopy[J]. Frontiers of Optoelectronics, 2015, 8(1): 1. Qian LI, Honglei ZHAN, Fangli QIN, Wujun JIN, Honglan LIU, Kun ZHAO. Detecting NO-3 concentration in nitrate solutions using terahertz time-domain spectroscopy[J]. Frontiers of Optoelectronics, 2015, 8(1): 1.

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