Investigation on a Haze Episode of Fine Particulate Matter using Semi-continuous Chemical Composition Data

Park, Seungshik; Kim, Sun-Jung; Gong, Bu–Joo; Lee, Kwon-Ho; Cho, Seog-Yeon; Kim, Jong-Choon; Lee, Suk-Jo

doi:10.5572/kosae.2013.29.5.642

Cited by 23 publications

(14 citation statements)

References 34 publications

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“…The average PM 2.5 mass concentration during winter and spring episodes was 77.6 and 64.3 μg/m 3 , respectively. These episodes that occurred in winter and spring were mostly associated with local and regional haze pollution and/or BB emissions originating over China (Park et al, 2013c). For example, PM 2.5 pollution episodes observed in January 2013 were greatly impacted by severe haze and smog phenomena covering the northeastern and eastern regions of China (Wang et al, 2014a,b,c).…”

Section: Resultsmentioning

confidence: 97%

“…As discussed briefly in Section 3.1, PM 2.5 pollution episodes were closely associated with long-range transport of haze pollution and/or forest fire smoke occurring in China (Park et al, 2013c). In this study only three haze episodes from all such episodes were discussed to investigate the difference in evolution of two WSOC fractions.…”

Section: Influence Of Haze Episodes On the Evolution Of Two Wsoc Fracmentioning

confidence: 99%

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Source identification of water-soluble organic aerosols at a roadway site using a positive matrix factorization analysis

Park

Cho

Bae

2015

Science of The Total Environment

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Section: Resultsmentioning

confidence: 97%

Section: Influence Of Haze Episodes On the Evolution Of Two Wsoc Fracmentioning

confidence: 99%

Source identification of water-soluble organic aerosols at a roadway site using a positive matrix factorization analysis

Park

Cho

Bae

2015

Science of The Total Environment

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“…사용량 증가 (Park et al, 2013b;Jung and Kim, 2011) 와 관련이 크며, 다른 중요한 인자는 측정 지점 주변의 기압배치에 의해서 영향을 받는다 (Kim Oanh et al, 2005). 연무 현상이 발생하면 원소탄소 (EC), 유기탄소 (OC), 금속 및 미량원소 성분들의 농도가 증가한다 (Park et al, 2005).…”

Section: 서 론unclassified

“…또한 강풍과 함께 건조한 대 기가 유입되어 습도가 낮아지는 특징을 보인다 (Zhang and Iwasaka, 1999). Park et al, 2013b). Aerodynamic diameter (μm) 또한 황사가 발원지로부터 기단을 따라 이동할 때 지각원소의 비율은 거의 일정한 것으로 나타나고 있다 (Mori et al, 2003).…”

Section: 서 론unclassified

Chemical Composition Characteristics of Atmospheric Aerosols in Relation to Haze, Asian Dust and Mixed Haze-Asian Dust Episodes at Gosan Site in 2013

Ko¹,

Song²,

Wan³

et al. 2016

Journal of Korean Society for Atmospheric Environment

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The PM 10 and PM 2.5 aerosols were collected at the Gosan site of Jeju Island in 2013 and analyzed, in order to examine the variation characteristics of the chemical compositions in relation to the haze, Asian dust, and mixed haze-Asian dust episodes. Volume concentrations obtained from the Aerodynamic Particle Sizer (APS) were high in the range of 0.6~1.0 μm particles for haze event, and in the range of 2.0~10.0 μm particles for Asian dust event.For the haze event, nitrate concentrations increased highly as 8.8 and 25.1 times for PM 10 and PM 2.5 , respectively, possibly caused by the inflow of air mass stagnated in eastern parts of China into Jeju area. For the Asian dust event, the concentrations of nss-Ca 2+ , NO 3 -and nss-SO 4 2-increased 6.0, 1.5, 1.8 times for PM 10 , and 2.3, 1.3, 1.6 times for PM 2.5 , respectively. Meanwhile, for the mixed haze-Asian dust event, the concentrations of nss-Ca 2+ and NO 3 -increased 13.4 and 3.2 times for PM 10 , and 1.8 and 3.4 times for PM 2.5 , respectively. The NH 4 NO 3 content was higher than that of (NH 4 ) 2 SO 4 during the haze event, however it was relatively low during the mixed hazeAsian dust event. The aerosols were acidified mostly by inorganic acids, and especially the nitric acid contributed highly to the acidification during both the haze and the mixed haze-Asian dust events. Meanwhile, the neutralization by ammonia was noticeably high during haze event when the stagnated air mass moved from China.

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“…따라서 국내에서 대기 중의 (Park et al, 2013a;Park and Cho, 2011 Yu et al, 2015). (Park et al, 2013b;Heo et al, 2009;Park et al, 2008 , and between NO 2 and NO 3 -for winter episodes "A" and "B". Hua et al, 2008;Poppe et al, 1993).…”

Section: 연무 오염은 인간의 건강 시정 지구 기후에 대한 부unclassified

Investigation of PM<sub>2.5</sub> Pollution Episodes in Gwangju

Yu¹,

Cho²,

Bae³

et al. 2015

Journal of Korean Society for Atmospheric Environment

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Abstract24-hr integrated PM 2.5 measurements were performed between December 2013 and October 2014 at an urban site in Gwangju and the collected samples were analyzed for organic carbon (OC), elemental carbon (EC), ionic species, and elemental species. Objectives of this study were to identify PM 2.5 pollution episodes, to characterize their chemical components, and to examine their probable origins. Over the course of the study period, average PM 2.5 concentration was 37.7±23.6 (6.0~121.5) μg/m 3 . Concentrations of secondary ionic species; NH 4 + , NO 3 -, and SO 4 2-was on average 5.54 μg/m 3 (0.28~20.86), 7.60 μg/m 3 (0.45~33.53), and 9.05 μg/m 3 (0.50~34.98), accounting for 13.7% (4.6~22.7), 18.6% (2.9~44.8), and 22.9% (4.9~55.1) of the PM 2.5 concentration, respectively. Average OC and EC concentrations were 5.22 μgC/m 3 and 1.54 μgC/m 3 , taking possession of 4.6 and 22.2% (as organic mass) of the PM 2.5 , respectively. Frequencies at which 24-hr averaged PM 2.5 exceeded a 24-hr averaged Korean PM 2.5 standard of 50 μg/m 3 (termed as an "episode" in this study) were 30, accounting for 21.3% of total 141 measurements. These pollution episodes were mostly associated with haze phenomenon and weak surface wind speed. It is suggested that secondary formation of aerosol was one important formation mechanism of the episodes. The episodes were associated with enhancements of organic mass, NO 3 -and SO 4 2-in winter, of NO 3 -and SO 4 2-in spring, and of SO 4 2-in summer. Potential source contribution function results indicate also that PM 2.5 episodes were likely attributed to local and regional haze pollution transported from northeastern China in winter, to atmospheric processing of local emissions rather than long-range transport of air pollutants in spring, and to the SO 4 2-driven by photochemistry of SO 2 in summer.

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Investigation on a Haze Episode of Fine Particulate Matter using Semi-continuous Chemical Composition Data

Cited by 23 publications

References 34 publications

Source identification of water-soluble organic aerosols at a roadway site using a positive matrix factorization analysis

Source identification of water-soluble organic aerosols at a roadway site using a positive matrix factorization analysis

Chemical Composition Characteristics of Atmospheric Aerosols in Relation to Haze, Asian Dust and Mixed Haze-Asian Dust Episodes at Gosan Site in 2013

Investigation of PM<sub>2.5</sub> Pollution Episodes in Gwangju

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