TY  - JOUR
A1  - Simon, Mario
A1  - Heinritzi, Martin
A1  - Herzog, Stephan
A1  - Leiminger, Markus
A1  - Bianchi, Federico
A1  - Praplan, Arnaud Patrick
A1  - Dommen, Josef
A1  - Curtius, Joachim
A1  - Kürten, Christoph Andreas
T1  - Detection of dimethylamine in the low pptv range using nitrate chemical ionization atmospheric pressure interface time-of-flight (CI-APi-TOF) mass spectrometry
T2  - Atmospheric measurement techniques
N2  - Amines are potentially important for atmospheric new particle formation, but their concentrations are usually low with typical mixing ratios in the pptv range or even smaller. Therefore, the demand for highly sensitive gas-phase amine measurements has emerged in the last several years. Nitrate chemical ionization mass spectrometry (CIMS) is routinely used for the measurement of gasphase sulfuric acid in the sub-pptv range. Furthermore, extremely low volatile organic compounds (ELVOCs) can be detected with a nitrate CIMS. In this study we demonstrate that a nitrate CIMS can also be used for the sensitive measurement of dimethylamine (DMA, (CH3/2NH) using the  NO3−•(HNO3)1 − 2• (DMA) cluster ion signal. Calibration measurements were made at the CLOUD chamber during two different measurement campaigns. Good linearity between 0 and ~120 pptv of DMA as well as a sub-pptv detection limit of 0.7 pptv for a 10 min integration time are demonstrated at 278K and 38% RH.
Y1  - 2016
UR  - http://publikationen.ub.uni-frankfurt.de/frontdoor/index/index/docId/42440
UR  - https://nbn-resolving.org/urn:nbn:de:hebis:30:3-424409
SN  - 1867-8548
SN  - 1867-1381
N1  - © Author(s) 2016. This work is distributed under the Creative Commons Attribution 3.0 License.
VL  - 9
SP  - 2135
EP  - 2145
PB  - Copernicus
CY  - Katlenburg-Lindau [u.a.]
ER  -