| 초록 |
Pinic acid (PA) and cis-pinonic acid (CPA) in the atmospheric particulate matter with an aerodynamic diameter of less than or equal to a nominal $10{ mu}m$ ( $PM_{10}$ ) were analyzed for the samples collected during the period of April 2010 to April 2011 at Jongro in Seoul. Both pinic acid and cis-pinonic acid showed higher seasonal average concentrations in summer (PA; $18.9ng/m^3$ , CPA; $16.0ng/m^3$ ) than winter (PA; $5.3ng/m^3$ , CPA; $5.9ng/m^3$ ). They displayed a seasonal pattern associated with temperature reflecting the influence on emissions of ${ alpha}-pinene$ and ${ beta}-pinene$ from conifers and their photochemical reaction. These results were confirmed through Pearson correlation coefficient between CPA, PA and $O_3+NO_2$ , temperature. CPA was only correlated with n-alkanes ( $C_{29}$ , $C_{31}$ , $C_{33}$ ) from biogenic source. PA was correlated with n-alkanes ( $C_{29}$ , $C_{31}$ , $C_{33}$ ), n-alkanoic acid ( $C_{20}$ , $C_{22}$ , $C_{24}$ ) from biogenic source and n-alkanes ( $C_{28}$ , $C_{30}$ , $C_{32}$ ), and n-alkanoic acid ( $C_{16}$ , $C_{18}$ ) from anthropogenic source. These results showed that the formation of PA and CPA from ${ alpha}-pinene$ and ${ beta}-pinene$ is related to organic compounds from biogenic source. And it is possible for PA to be effected by organic compounds from anthropogenic source. |
