미국 서부 해안 IMPROVE 측정소에 대한 대기 중 PM2.5의 오염원 기여도 추정 (Estimation of Source Apportionment of Ambient PM2.5 at Western Coastal IMPROVE Site in USA)

서지정보

· 발행기관 : 한국대기환경학회
· 수록지 정보 : 한국대기환경학회지 / 24권 / 1호 / 30 ~ 42페이지
· 저자명 : 황인조, 김동술, Philip K. Hopke

초록

In this study, the chemical compositions of PM2.5samples collected at the Redwood National Park IMPROVEsite in California from March 1988 to May 2004 were analyzed to provide source identiation and apportionment.A total of 1,640 samples were collected and 33 chemical species were analyzed by particle induced X-rayemission, proton elastic scattering analysis, photon induced X-ray orescence, ion chromatography, and thermaloptical reflectance methods. Positive matrix factorization (PMF) was used to develop source profiles and toestimate their mass contributions. The PMF modeling identid e sources and the average mass was apportionedto motor vehicle (35.8%, 1.58g/m3), aged sea salt (23.2%, 1.02g/m3), fresh sea salt (21.4%, 0.94g/m3), wood/field burning (16.1%, 0.71g/m3), and airborne soil (3.5%, 0.15g/m3), respectively. To analyze local sourceimpacts from various wind directions, the CPF and NPR analyses were performed using source contribution resultswith the wind direction values measured at the site. These results suggested that sources of PM2.5are also sourcesof visibility degradation and then source apportionment studies derived for PM2.5are also used for understandingvisibility problem.

영어초록

In this study, the chemical compositions of PM2.5samples collected at the Redwood National Park IMPROVEsite in California from March 1988 to May 2004 were analyzed to provide source identiation and apportionment.A total of 1,640 samples were collected and 33 chemical species were analyzed by particle induced X-rayemission, proton elastic scattering analysis, photon induced X-ray orescence, ion chromatography, and thermaloptical reflectance methods. Positive matrix factorization (PMF) was used to develop source profiles and toestimate their mass contributions. The PMF modeling identid e sources and the average mass was apportionedto motor vehicle (35.8%, 1.58g/m3), aged sea salt (23.2%, 1.02g/m3), fresh sea salt (21.4%, 0.94g/m3), wood/field burning (16.1%, 0.71g/m3), and airborne soil (3.5%, 0.15g/m3), respectively. To analyze local sourceimpacts from various wind directions, the CPF and NPR analyses were performed using source contribution resultswith the wind direction values measured at the site. These results suggested that sources of PM2.5are also sourcesof visibility degradation and then source apportionment studies derived for PM2.5are also used for understandingvisibility problem.

참고자료

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