Articles | Volume 11, issue 7
https://doi.org/10.5194/amt-11-4531-2018
https://doi.org/10.5194/amt-11-4531-2018
Research article
 | 
30 Jul 2018
Research article |  | 30 Jul 2018

Development of an incoherent broadband cavity-enhanced absorption spectrometer for in situ measurements of HONO and NO2

Jun Duan, Min Qin, Bin Ouyang, Wu Fang, Xin Li, Keding Lu, Ke Tang, Shuaixi Liang, Fanhao Meng, Zhaokun Hu, Pinhua Xie, Wenqing Liu, and Rolf Häsler

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AR by Jun Duan on behalf of the Authors (24 Jun 2018)  Author's response   Manuscript 
ED: Publish subject to technical corrections (04 Jul 2018) by Murray Hamilton
AR by Jun Duan on behalf of the Authors (11 Jul 2018)  Manuscript 
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Short summary
We report a custom-built instrument for simultaneous unambiguous measurements of HONO and NO2 based on incoherent broadband cavity enhanced absorption spectroscopy (IBBCEAS). The current IBBCEAS instrument has made significant improvements in terms of efficient sampling as well as resistance against vibration; temperature change and the measurement precisions (2σ) for HONO are about 180 and 340 ppt in 30 s, respectively. The field inter-comparison and the mobile measurements are present.