Evaporation rates and vapor pressures of individual aerosol species formed in the atmospheric oxidation of alpha- and beta-pinene

Environ Sci Technol. 2001 Aug 15;35(16):3344-9. doi: 10.1021/es001946b.


The semivolatile oxidation products (trans-norpinic acid, pinic acid, cis-pinonic acid, etc.) of the biogenic monoterpenes (alpha-pinene, beta-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(p0 glutaric/Pa) = - 3,510 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(p0 norpinic/Pa) = - 2,196.9 K/T + 3.522, and the vapor pressure of pinic acid is log(p0 pinic/ Pa) = - 5,691.7 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 7 x 10(-5) Pa at 296 K.

Publication types

  • Research Support, Non-U.S. Gov't
  • Research Support, U.S. Gov't, Non-P.H.S.

MeSH terms

  • Aerosols
  • Air Pollutants / analysis*
  • Bicyclic Monoterpenes
  • Bridged Bicyclo Compounds / chemistry*
  • Kinetics
  • Monoterpenes*
  • Oxidation-Reduction
  • Pressure
  • Temperature
  • Terpenes / chemistry*
  • Volatilization


  • Aerosols
  • Air Pollutants
  • Bicyclic Monoterpenes
  • Bridged Bicyclo Compounds
  • Monoterpenes
  • Terpenes
  • beta-pinene
  • alpha-pinene