Real time in situ detection of organic nitrates in atmospheric aerosols. Rollins, A., W., Smith, J., D., Wilson, K., R., & Cohen, R., C. Environmental science & technology, 44(14):5540-5, American Chemical Society, 7, 2010.
Real time in situ detection of organic nitrates in atmospheric aerosols. [pdf]Paper  Real time in situ detection of organic nitrates in atmospheric aerosols. [link]Website  abstract   bibtex   
A novel instrument is described that quantifies total particle-phase organic nitrates in real time with a detection limit of 0.11 microg m(-3) min(-1), 45 ppt min(-1) (-ONO(2)). Aerosol nitrates are separated from gas-phase nitrates with a short residence time activated carbon denuder. Detection of organic molecules containing -ONO(2) subunits is accomplished using thermal dissociation coupled to laser induced fluorescence detection of NO(2). This instrument is capable of high time resolution (seconds) measurements of particle-phase organic nitrates, without interference from inorganic nitrate. Here we use it to quantify organic nitrates in secondary organic aerosol generated from high-NO(x) photooxidation of limonene, alpha-pinene, Delta-3-carene, and tridecane. In these experiments the organic nitrate moiety is observed to be 6-15% of the total SOA mass.

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