Real time in situ detection of organic nitrates in atmospheric aerosols

Journal Article · Fri Jun 11 00:00:00 EDT 2010 · Environmental Science and Technology

DOI:https://doi.org/10.1021/es100926x· OSTI ID:1009836

Rollins, Andrew W; Smith, Jared D; Wilson, Kevin R; Cohen, Ronald C

A new field instrument is described that quantifies total particle phase organic nitrates. The instrument is based on the thermal dissociation laser induced fluorescence (TD-LIF) method that thermally converts nitrates to NO2 which is then detected by LIF. This instrument is unique in its ability to provide fast sensitive measurements of particle phase organic nitrates, without interference from inorganic nitrate. Here we use it to quantify organic nitrates in SOA generated from high-NOx photooxidation of limonene, a-pinene, D-3-carene, and tridecane. In these experiments the organic nitrate moiety is observed to be 6-15percent of the total SOA mass, depending on the organic precursor.

• Research Organization: Lawrence Berkeley National Lab. (LBNL), Berkeley, CA (United States)
• Sponsoring Organization: Chemical Sciences Division
• DOE Contract Number: DE-AC02-05CH11231
• OSTI ID: 1009836
• Report Number(s): LBNL-4352E; TRN: US201106%%1026
• Journal Information: Environmental Science and Technology, Vol. 44, Issue 14; ISSN 0013--936X
• Country of Publication: United States
• Language: English

Related Subjects

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AEROSOLS
DETECTION
DISSOCIATION
FLUORESCENCE
LASERS
NITRATES
PRECURSOR
organic nitrates
atmospheric aerosols
thermal dissociation
laser induced fluorescence