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| Titel |
Development of a photochemical source for the production and calibration of acyl peroxynitrate compounds |
| VerfasserIn |
P. R. Veres, J. M. Roberts |
| Medientyp |
Artikel
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| Sprache |
Englisch
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| ISSN |
1867-1381
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| Digitales Dokument |
URL |
| Erschienen |
In: Atmospheric Measurement Techniques ; 8, no. 5 ; Nr. 8, no. 5 (2015-05-29), S.2225-2231 |
| Datensatznummer |
250116371
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| Publikation (Nr.) |
 copernicus.org/amt-8-2225-2015.pdf |
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| Zusammenfassung |
| A dynamic system for the calibration of acyl peroxynitrate compounds (APNs)
has been developed in the laboratory to reduce the difficulty, required
time, and instability of laboratory-produced standards for difficult-to-synthesize APN species.
In this work we present a photochemical source for
the generation of APN standards: acetyl peroxynitrate (PAN), propionyl
peroxynitrate (PPN), acryloyl peroxynitrate (APAN), methacryloyl
peroxynitrate (MPAN), and crotonyl peroxynitrate (CPAN). APNs are generated
via photolysis of a mixture of acyl chloride (RC(O)Cl) and ketone (RC(=O)R)
precursor compounds in the presence of O2 and NO2. Subsequent
separation by a prep-scale gas chromatograph and detection with a total
NOy instrument serve to quantify the output of the APN source.
Validation of the APN products was performed using iodide ion chemical
ionization mass spectroscopy (I- CIMS). This method of standard
production is an efficient and accurate technique for the calibration of
instrumentation used to measure PAN, PPN, APAN, MPAN, and CPAN. |
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