Development of a photochemical source for the production and calibration of acyl peroxynitrate compounds
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 g...
| Main Authors: | , |
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| Format: | Article |
| Language: | English |
| Published: |
Copernicus Publications
2015-05-01
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| Series: | Atmospheric Measurement Techniques |
| Online Access: | http://www.atmos-meas-tech.net/8/2225/2015/amt-8-2225-2015.pdf |
| Summary: | 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 O<sub>2</sub> and NO<sub>2</sub>. Subsequent
separation by a prep-scale gas chromatograph and detection with a total
NO<sub><i>y</i></sub> 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<sup>-</sup> 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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| ISSN: | 1867-1381 1867-8548 |