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Chemical ionization quadrupole mass spectrometer with an electrical discharge ion source for atmospheric trace gas measurement
Eger, Philipp G. Helleis, Frank Schuster, Gerhard Phillips, Gavin J. Lelieveld, Jos Crowley, John N.
Eger, Philipp G.
Helleis, Frank
Schuster, Gerhard
Phillips, Gavin J.
Lelieveld, Jos
Crowley, John N.
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Other Contributors
EPub Date
Publication Date
2019-03-26
Submitted Date
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Abstract
We present a chemical ionization quadrupole mass spectrometer (CI-QMS) with a radio-frequency (RF) discharge ion source through N2∕CH3I as a source of primary ions. In addition to the expected detection of PAN, peracetic acid (PAA) and ClNO2 through well-established ion–molecule reactions with I− and its water cluster, the instrument is also sensitive to SO2, HCl and acetic acid (CH3C(O)OH) through additional ion chemistry unique to our ion source. We present ionization schemes for detection of SO2, HCl and acetic acid along with illustrative datasets from three different field campaigns underlining the potential of the CI-QMS with an RF discharge ion source as an alternative to 210Po. The additional sensitivity to SO2 and HCl makes the CI-QMS suitable for investigating the role of sulfur and chlorine chemistry in the polluted marine and coastal boundary layer.
Citation
Eger, P. G., Helleis, F., Schuster, G., Phillips, G. J., Lelieveld, J. & Crowley, J. N. (2019). Chemical ionization quadrupole mass spectrometer with an electrical discharge ion source for atmospheric trace gas measurement, Atmospheric Measurement Techniques, 12, 1935-1954.
Publisher
Copernicus Publications
Journal
Atmospheric Measurement Techniques
Research Unit
DOI
10.5194/amt-12-1935-2019
PubMed ID
PubMed Central ID
Type
Article
Language
en
Description
Series/Report no.
ISSN
1867-1381
EISSN
1867-8548