A minimized ultra-sensitive MIR hollow waveguide (HWG) isotope ratio analyzer for environmental and industrial applications

Zhenyou Wang; Yan Zhuang; Andrei Deev; Sheng Wu

doi:10.1117/12.2288604

26 January 2018 A minimized ultra-sensitive MIR hollow waveguide (HWG) isotope ratio analyzer for environmental and industrial applications

Zhenyou Wang, Yan Zhuang, Andrei Deev, Sheng Wu

Author Affiliations +

Proceedings Volume 10540, Quantum Sensing and Nano Electronics and Photonics XV; 105400G (2018) https://doi.org/10.1117/12.2288604
Event: SPIE OPTO, 2018, San Francisco, California, United States

Abstract

An advanced commercial InfraRed Isotope Ratio (IR²) analyzer has been developed in Arrow Grand Technologies and the hollow waveguide (HWG) is used as the sample tube. By measuring the selected CO₂ absorption peaks in the Mid- IR(MIR), the stable carbon isotope ratio, i.e. ¹³C, is obtained at a fast sampling rate. Combined with a GC and a combustor, it has been successfully employed to measure compound specific ¹³C isotope ratios in the field. By updating the single path HWG to 5-path HWG, we have also demonstrated its application for the environmental and health research. Here, the isotope ratio analyzer is minimized in size and weight to better fulfill the field deployment requirements. The size is reduced from 80cm*51cm*51cm to 74cm*33cm*46cm. After optimizing all subsystems, the minimized isotope ratio analyzer has a better performance. What’s more, the number of HWG paths can be selected to match the specific application. For instance, a 3-pass HWG is selected to conduct ultra-sensitive compound specific isotope analysis for mud gas logging, and a 5+1 pass HWG could measure isotope ratios of carbon with an ultra-broad CO₂ concentration range of 300 ppm-47,500 ppm and a fast sample refresh and data processing rate up to 10Hz.

Conference Presentation

Citation Download Citation

Zhenyou Wang, Yan Zhuang, Andrei Deev, and Sheng Wu "A minimized ultra-sensitive MIR hollow waveguide (HWG) isotope ratio analyzer for environmental and industrial applications", Proc. SPIE 10540, Quantum Sensing and Nano Electronics and Photonics XV, 105400G (26 January 2018); https://doi.org/10.1117/12.2288604

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