TY - JOUR
T1 - Application of a sequential reaction model to PANs and aldehyde measurements in two urban areas
AU - Roberts, James M.
AU - Stroud, Craig A.
AU - Jobson, Bertram T.
AU - Trainer, Michael
AU - Hereid, Daniel
AU - Williams, Eric
AU - Fehsenfeld, Fred
AU - Brune, William
AU - Martinez, Monica
AU - Harder, Hartwig
PY - 2001
Y1 - 2001
N2 - Measurements of the peroxycarboxylic nitric anhydrides (PANs = peroxyacetic nitric anhydride, PAN, peroxypropionic anhydride, PPN, and peroxymethacrylic nitric anhydride, MPAN) and aldehydes (acetaldehyde, propanal, and methacrolein) were made at Nashville, TN. in 1999 and Houston, TX. in 2000. The data were interpreted with a sequential reaction model that included reaction of aldehydes with hydroxyl radical and formation or loss of PANs mediated by peroxyacyl radicals { RC(O)OO}. The comparison of the measured ratios with those predicted by the model showed a disagreement for PAN/acetaldehyde and PPN/propanal in Nashville, but agreement in Houston. The Nashville data set also showed a disagreement in the case of PAN/acetaldehyde and MPAN/methacrolein, but agreement for PPN/propanal and MPAN/methacrolein. These features were consistent with the relative importance of isoprene to PAN formation at each site. The ratios were found to be highly correlated with ozone mixing ratios at each site.
AB - Measurements of the peroxycarboxylic nitric anhydrides (PANs = peroxyacetic nitric anhydride, PAN, peroxypropionic anhydride, PPN, and peroxymethacrylic nitric anhydride, MPAN) and aldehydes (acetaldehyde, propanal, and methacrolein) were made at Nashville, TN. in 1999 and Houston, TX. in 2000. The data were interpreted with a sequential reaction model that included reaction of aldehydes with hydroxyl radical and formation or loss of PANs mediated by peroxyacyl radicals { RC(O)OO}. The comparison of the measured ratios with those predicted by the model showed a disagreement for PAN/acetaldehyde and PPN/propanal in Nashville, but agreement in Houston. The Nashville data set also showed a disagreement in the case of PAN/acetaldehyde and MPAN/methacrolein, but agreement for PPN/propanal and MPAN/methacrolein. These features were consistent with the relative importance of isoprene to PAN formation at each site. The ratios were found to be highly correlated with ozone mixing ratios at each site.
UR - http://www.scopus.com/inward/record.url?scp=18244372997&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=18244372997&partnerID=8YFLogxK
U2 - 10.1029/2001GL013507
DO - 10.1029/2001GL013507
M3 - Article
AN - SCOPUS:18244372997
SN - 0094-8276
VL - 28
SP - 4583
EP - 4586
JO - Geophysical Research Letters
JF - Geophysical Research Letters
IS - 24
ER -