@inproceedings{51a9d4c6c9034e11986531f06541e795,
title = "Closing the peroxy acetyl (PA) radical budget: Observations of acyl peroxy nitrates (PAN, PPN and MPAN) during BEARPEX 2009",
abstract = "Acyl peroxy nitrates (APNs) are an important class of reactive nitrogen species formed as a result of photochemical processing of hydrocarbons in the presence of NOx (NOx = NO+NO2). Measurements of speciated acyl peroxy nitrates (APNs) were made from August-October 2007 on a ponderosa pine plantation in the Sierra Nevada Mountains of California during the Biosphere Effects on AeRosols and Photochemistry Experiment (BEARPEX, 2007). Observations of peroxy acetyl nitrate (PAN), peroxy methacryloyl nitrate (MPAN), peroxy propionyl nitrate (PPN) along with OH, NOx and a suite of aldehydes and ketones are used to evaluate a steady state model of APN concentrations. We find that ratios of APNs (e.g., PAN/MPAN, MPAN/PPN) are accurately predicted when temperatures exceed 15 °C. More than 70% of the VOC sources of PAN at the highest temperature are molecules other than acetaldehyde, with the largest contribution from methylvinyl ketone. Other significant sources include methacrolein, methyl glyoxal and biacetyl.",
author = "Lafranchi, {Brian W.} and Wolfe, {Glenn M.} and Thornton, {Joel A.} and Browne, {Eleanor C.} and Min, {Kyung Eun} and Wooldridge, {Paul J.} and Megan McKay and Goldstein, {Allen H.} and Gilman, {Jessica B.} and Daniel Welsh-Bon and Kuster, {William C.} and Degouw, {Joost A.} and Jingqiu Mao and Zhong Chen and Xinrong Ren and Brune, {William H.} and Cohen, {Ronald C.}",
year = "2009",
language = "English (US)",
isbn = "9780841224414",
series = "ACS National Meeting Book of Abstracts",
booktitle = "American Chemical Society - 237th National Meeting and Exposition, ACS 2009, Abstracts of Scientific Papers",
note = "237th National Meeting and Exposition of the American Chemical Society, ACS 2009 ; Conference date: 22-03-2009 Through 26-03-2009",
}