PAN, PPN and MPAN Measurements and the Quantitative Relationship of PAN and MPAN in Biogenic Hydrocarbon Conditions
Date of Award
Master of Arts
Dr. Steven Bertman
Dr. Donald Schreiber
Dr. Subra Muralidharan
Masters Thesis-Open Access
Simultaneous measurements of PAN, PPN and MPAN were made during the SOS 1999 Nashville campaign at Dickson site. The PANs data at this site were rich and complex. PAN and MP AN showed obvious diurnal change but PPN did not during this period. PAN and ozone have a clear positive relationship. Due to the special location of the site, winds from different directions bring anthropogenic hydrocarbons (AHCs) or biogenic hydrocarbons (BHCs) to the site. The data showed that the influence of AHCs and BHCs on PANs compounds varied on different days. Average values of PAN/PPN and PAN/MPAN from MLR may be interpretable regionally to use to calculate the contribution of AHC and BHC on the formation of ozone. But care must be taken to consider the contribution on individual days because of the variance in the ratio of PAN/PPN in AHC condition. The ratio of PAN/MP AN in BHC condition is more complicated. The ratio may be influenced by NOx and OH• level. No characteristic ratio is applicable in different complicated BHC conditions.
Wangchun, Chen, "PAN, PPN and MPAN Measurements and the Quantitative Relationship of PAN and MPAN in Biogenic Hydrocarbon Conditions" (2001). Masters Theses. 4338.