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Updated: Jul 9, 2025

Infrared Degenerate Four-wave Mixing with Upconversion Detection for Quantitative Gas Sensing
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Infrared Degenerate Four-wave Mixing with Upconversion Detection for Quantitative Gas Sensing

Published on: March 22, 2019

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测量CO2同位素比率使用基于空洞波导的中红外散射谱仪

Haojie Zhang1, Tao Wu1, Qiang Wu1,2

  • 1Key Laboratory of Nondestructive Test (Ministry of Education), Nanchang Hangkong University, Nanchang 330063, China.

Analytical chemistry
|December 6, 2023
PubMed
概括

这项研究引入了一种用于测量二氧化碳 (CO2) 同位素比率的新方法,该方法使用在空洞波导中放置的专用光谱仪. 开发的技术提供了高精度和稳定性,适合医疗诊断.

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The non-destructive nature and ability to provide valuable chemical information make IR spectroscopy a versatile technique with broad applications in various scientific and industrial fields. IR spectroscopy is commonly used to identify and characterize organic and inorganic compounds. It provides information about the functional groups present in a molecule and the bonding between atoms. This helps in the structural elucidation of compounds during organic synthesis, pharmaceutical research,...
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The probability of having two carbon-13 atoms next to each other is negligible because of the low natural abundance of carbon-13. Consequently, peak splitting due to carbon-carbon spin-spin coupling is not observed in spectra. However, protons up to three sigma bonds away split the carbon signal according to the n+1 rule, resulting in complicated spectra.
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