Simultaneous measurements of atmospheric NO2 and HONO using IBBCEAS with a near-ultraviolet LED

Liuyi Ling; Pinhua Xie; Min Qin; Renzhi Hu; Nina Zheng; Fuqi Si

doi:10.1117/12.999572

20 November 2012 Simultaneous measurements of atmospheric NO₂ and HONO using IBBCEAS with a near-ultraviolet LED

Liuyi Ling, Pinhua Xie, Min Qin, Renzhi Hu, Nina Zheng, Fuqi Si

Proceedings Volume 8563, Optical Metrology and Inspection for Industrial Applications II; 856310 (2012) https://doi.org/10.1117/12.999572
Event: Photonics Asia, 2012, Beijing, China

Abstract

High sensitivity simultaneous measurements of atmospheric NO₂ and HONO using incoherent broadband cavityenhanced absorption spectroscopy (IBBCEAS) were developed. A near-ultraviolet light emitting diode (LED) peaked at 372 nm was used as light source of the IBBCEAS instrument to measure the absorption of NO2 and HONO in the spectral range of 361-378 nm. Concentrations of atmospheric NO₂ and HONO were retrieved from the absorption spectra recorded in the absence of atmospheric aerosols and the average detection limits of 2.9 ppbv for NO₂ and 1.2 ppbv for HONO with an acquisition time of 5 min were achieved. The results demonstrated high sensitivity of this measurement technique based on IBBCEAS, which is a promising technique for measurements of atmospheric trace gases.

Citation Download Citation

Liuyi Ling, Pinhua Xie, Min Qin, Renzhi Hu, Nina Zheng, and Fuqi Si "Simultaneous measurements of atmospheric NO₂ and HONO using IBBCEAS with a near-ultraviolet LED", Proc. SPIE 8563, Optical Metrology and Inspection for Industrial Applications II, 856310 (20 November 2012); https://doi.org/10.1117/12.999572

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