Detection of dimethylamine in the low pptv range using nitrate chemical ionization atmospheric pressure interface time-of-flight (CI-APi-TOF) mass spectrometry

  • 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.

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Metadaten
Author:Mario Simon, Martin Heinritzi, Stephan Herzog, Markus Leiminger, Federico Bianchi, Arnaud Patrick Praplan, Josef Dommen, Joachim CurtiusORCiD, Andreas Kürten
URN:urn:nbn:de:hebis:30:3-424409
DOI:https://doi.org/10.5194/amt-9-2135-2016
ISSN:1867-8548
ISSN:1867-1381
Parent Title (English):Atmospheric measurement techniques
Publisher:Copernicus
Place of publication:Katlenburg-Lindau [u.a.]
Document Type:Article
Language:English
Date of Publication (online):2016/12/09
Date of first Publication:2016/05/13
Publishing Institution:Universitätsbibliothek Johann Christian Senckenberg
Release Date:2016/12/09
Volume:9
Page Number:11
First Page:2135
Last Page:2145
Note:
© Author(s) 2016. This work is distributed under the Creative Commons Attribution 3.0 License.
HeBIS-PPN:424758938
Institutes:Geowissenschaften / Geographie / Geowissenschaften
Dewey Decimal Classification:5 Naturwissenschaften und Mathematik / 55 Geowissenschaften, Geologie / 550 Geowissenschaften
Sammlungen:Universitätspublikationen
Licence (German):License LogoCreative Commons - Namensnennung 3.0