TY  - EJOUR
AU  - Dixneuf, Sophie
AU  - Ruth, Albert A.
AU  - Häseler, Rolf
AU  - Brauers, Theo
AU  - Rohrer, Franz
AU  - Dorn, Hans-Peter
TI  - Comparison of nitrous acid detection using open-path incoherent broadband cavity-enhanced absorption spectroscopy and extractive long-path absorption photometry
JO  - Atmospheric measurement techniques discussions
SN  - 1867-8610
CY  - Katlenburg-Lindau
PB  - Copernicus
M1  - FZJ-2021-05436
PY  - 2021
AB  - Abstract. An instrument based on 20 m open-path incoherent broadband cavity-enhanced absorption spectroscopy (IBBCEAS) was established at the Jülich SAPHIR chamber in Spring 2011. The setup was optimized for the detection of HONO and NO2 in the near UV region 352–386 nm, utilizing a bright hot-spot Xe-arc lamp and a UV-enhanced CCD detector. A 2σ detection limit of 26 pptv for HONO and 76 pptv for NO2 was achieved for an integration time of 1 min. Methacrolein has also been detected at mixing ratios below 5 ppbv. The IBBCEAS instrument’s performance for HONO and NO2 detection was compared to that of extractive wet techniques, long-path absorption photometry (LOPAP) and chemiluminescence spectrometry (CLS) NOx detection, respectively.
LB  - PUB:(DE-HGF)25
DO  - DOI:10.5194/amt-2021-291
UR  - https://juser.fz-juelich.de/record/903803
ER  -