Chemical Composition Characteristics of Fine Particulate Matter at Atmospheric Boundary Layer of Background Area in Fall, 2012

Ko, Hee-Jung; Lee, Yoon-Sang; Kim, Won-Hyung; Song, Jung‐Min; Kang, Chang‐Hee

doi:10.5012/jkcs.2014.58.3.267

Cited by 4 publications

(2 citation statements)

References 23 publications

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“…In contrast, PM-2.5 is caused by condensation and aggregation of substances in the atmosphere. Therefore, it is difficult to manage and control PM-2.5 [4]. The major constituents of PM-2.5 are ammonium (NH 4 + ), SO X , NO X , and organic carbon.…”

Section: Introductionmentioning

confidence: 99%

Response to Ammonia Emission Flux to Different pH Conditions under Biochar and Liquid Fertilizer Application

et al. 2021

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For the ammonia generated in Korea, the contribution rate of livestock manure is high, and a large amount of ammonia (NH3) is emitted into the atmosphere during the soil application process. Volatilization of NH3 is affected by soil characteristics as well as manure characteristics, but the current inventory does not sufficiently reflect this. This study was conducted to confirm the change of the NH3 emitted from liquid fertilizer (LF) due to soil pH and to evaluate the impacts of biochar (BC) on the suppression of NH3 volatilization. Estimating the NH3 emission flux using the chamber for 24 soils after LF treatment, it showed a tendency to increase exponentially as the pH in soil increased from 4 to 7. In addition, the parallel treatment of BC and LF increased the soil pH, thereby increasing the NH3 emission flux. The rise of soil pH due to LF treatment is a temporary phenomenon that appears in the early stage, but since NH3 volatilization is also highest at the beginning of LF application, the effect of soil characteristics on emission factor and its inventory should be considered when calculating the amount of NH3 emissions. Therefore, follow-up studies such as subdividing and enhancing the NH3 emission factor by soil characteristics and developing a reduction coefficient to certify the amount of emission reduction are needed.

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Section: Introductionmentioning

confidence: 99%

Response to Ammonia Emission Flux to Different pH Conditions under Biochar and Liquid Fertilizer Application

et al. 2021

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“…한 · 중 · 일 PM 10 국가 배경농도 최근 경향 분석 Analysis of the Recent Trend of National Background PM 10 Concentrations over Korea, China, and Japan , Lim-Seok Chang 2) , Jae Hyun Lim (Ko et al, 2014;Kang et al, 2012;Kim et al, 2001;Park et al, 1994;Kim et al, 1992) (Choi et al, 2014;Lee et al, 2014;Park et al, 2012) 200 160 120 80 40 0 160 120 80 40 0 90 60 30 0 280 240 200 160 120 80 40 0 150 120 90 60 30 0 60 50 40 30 20 10 0 95%ile 90%ile 75%ile 50%ile 25%ile 10%ile 5%ile 200 160 120 80 40 0 150 120 90 60 …”

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Analysis of the Recent Trend of National Background PM₁₀Concentrations over Korea, China, and Japan

Yang¹,

Lee²,

Lyu³

et al. 2016

Journal of Korean Society for Atmospheric Environment

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The goal of this research is to examine the recent decade-long (2000~2014) trends of national background concentrations over China, Japan, and Korea. Based on the Long-range Transboundary Air Pollutants in Northeast Asia (LTP) project, which is three-party collaboration project among three countries, we investigated the long-term trends of national background PM 10 concentrations in three countries over the recent 15 years, including the 2008 Beijing Olympic Game period. In accordance with the agreement among three countries, a total of 8 national background sites: three national background monitoring sites in China (2 sites in Dalian, and 1 in Xiamen), three sites in Korea (Ganghwa, Gosan, and Taean), and two sites in Japan (Oki and Rishiri), were chosen for the trend analysis.The results showed that Chinese background concentration recorded the highest level overall. However, the rapid declining recent trends of annual median (50 th -percentile) values were surprisingly detected since 2006 or 2007 in every site in China, with the most rapidly decreasing rate ( -18.6±10.3%/year) over 2006~2007, and the second most rapidly decreasing rate ( -18.0±1.5%/year) over 2007~2008. Based on the previous statistical literature, we concluded that this declining trends were due to the emission reduction of PM 10 concentrations in China for 2008 Beijing Olympic Game. In Korea, Ganghwa was also showing the decreasing trends over the recent years since 2006, which is also well accorded with the decreasing period of Chinese background concentrations. Taean also implied some impact of Beijing Olympic Game, showing small but detectable decreasing trends, while Gosan showed the increasing tendencies probably due to the near-urban influences. However, since 2012, most sites in both China and Korea showed strong increasing trends, undoubtedly implying the increasement of both emission in

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Size Distribution Characteristics of Water-soluble Ionic Components in Airborne Particulate Matter in Busan

Park

Lee

2015

Journal of Korean Society for Atmospheric Environment

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서 론대기중 AbstractThis study was conducted to investigate size distribution characteristics of water-soluble ionic components in the airborne particulate matter (PM) collected from an urban area in Busan using a MOUDI cascade impactor from March to October 2010. The inorganic constituents in the fine particles (≤1.8 μm) predominantly consisted of sulfate, nitrate, ammonium, and potassium. Sulfate and ammonium concentrations showed a high correlation and similar equivalent concentrations in the fine modes including 0.18~0.32 μm, 0.32~0.56 μm, and 0.56~1.0 μm. This indicates that the main chemical component in the fine particles would be forms of ammonium sulfate such as (NH 4 ) 3 H(SO 4 ) 2 , (NH 4 ) 2 SO 4 , and (NH 4 )HSO 4 . Back trajectory analysis showed that relatively higher concentrations of ammonium, nitrate, and sulfate in the fine mode, compared to the coarse mode, are caused both by domestic sources and long-range transports originated from China continent. High concentration episodes of PM both in the fine mode and the coarse mode were attributed both by anthropogenic sources, such as ship emissions and traffic emissions, and by natural sources such as seawater (sea salt), respectively.

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Chemical Composition Characteristics of Fine Particulate Matter at Atmospheric Boundary Layer of Background Area in Fall, 2012

Cited by 4 publications

References 23 publications

Response to Ammonia Emission Flux to Different pH Conditions under Biochar and Liquid Fertilizer Application

Response to Ammonia Emission Flux to Different pH Conditions under Biochar and Liquid Fertilizer Application

Analysis of the Recent Trend of National Background PM₁₀Concentrations over Korea, China, and Japan

Size Distribution Characteristics of Water-soluble Ionic Components in Airborne Particulate Matter in Busan

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Chemical Composition Characteristics of Fine Particulate Matter at Atmospheric Boundary Layer of Background Area in Fall, 2012

Cited by 4 publications

References 23 publications

Response to Ammonia Emission Flux to Different pH Conditions under Biochar and Liquid Fertilizer Application

Response to Ammonia Emission Flux to Different pH Conditions under Biochar and Liquid Fertilizer Application

Analysis of the Recent Trend of National Background PM10Concentrations over Korea, China, and Japan

Size Distribution Characteristics of Water-soluble Ionic Components in Airborne Particulate Matter in Busan

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Analysis of the Recent Trend of National Background PM₁₀Concentrations over Korea, China, and Japan