M. Bilde, S. Pandis
Jul 19, 2001
Citations
17
Influential Citations
142
Citations
Quality indicators
Journal
Environmental Science & Technology
Abstract
The semivolatile oxidation products (trans-norpinic acid, pinic acid, cis-pinonic acid, etc.) of the biogenic monoterpenes (α-pinene, β-pinene, etc.) contribute to the atmospheric burden of particulate matter. Using the tandem differential mobility analysis (TDMA) technique evaporation rates of glutaric acid, trans-norpinic acid, and pinic acid particles were measured in a laminar flow reactor. The vapor pressure of glutaric acid was found to be log(p0glutaric/Pa) = − 3510 K/T + 8.647 over the temperature range 290−300 K in good agreement with the values previously reported by Tao and McMurry (1989). The measured vapor pressure of trans-norpinic acid over the temperature range 290−312 K is log(p0norpinic/Pa) = − 2196.9 K/T + 3.522, and the vapor pressure of pinic acid is log(p0pinic/Pa) = − 5691.7 K/T + 14.73 over the temperature range 290−323 K. The uncertainty on the reported vapor pressures is estimated to be approximately ± 50%. The vapor pressure of cis-pinonic acid is estimated to be of the order of...