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http://dx.doi.org/10.5338/KJEA.2021.40.3.25

Study on the Emission Characteristics of Air Pollutants from Agricultural Area  

Kim, Min-Wook (Climate Change & Evaluation Division, Department of Agricultural Environment, National Institute of Agricultural Sciences, Rural Development Administration)
Kim, Jin-Ho (Climate Change & Evaluation Division, Department of Agricultural Environment, National Institute of Agricultural Sciences, Rural Development Administration)
Kim, Kyeong-Sik (Climate Change & Evaluation Division, Department of Agricultural Environment, National Institute of Agricultural Sciences, Rural Development Administration)
Hong, Sung-Chang (Climate Change & Evaluation Division, Department of Agricultural Environment, National Institute of Agricultural Sciences, Rural Development Administration)
Publication Information
Korean Journal of Environmental Agriculture / v.40, no.3, 2021 , pp. 211-218 More about this Journal
Abstract
BACKGROUND: Fine particulate matter (PM2.5) is produced by chemical reactions between various precursors. PM2.5 has been found to create greater human risk than particulate matter (PM10), with diameters that are generally 10 micrometers and smaller. Ammonia (NH3) and nitrogen oxides (NOx) are the sources of secondary generation of PM2.5. These substances generate PM2.5 through some chemical reactions in the atmosphere. Through chemical reactions in the atmosphere, NH3 generates PM2.5. It is the causative agent of PM2.5. In 2017 the annual ammonia emission recorded from the agricultural sector was 244,335 tons, which accounted for about 79.3% of the total ammonia emission in Korea in that year. To address this issue, the agricultural sector announced the inclusion of reducing fine particulate matter and ammonia emissions by 30% in its targets for the year 2022. This may be achieved through analyses of its emission characteristics by monitoring the PM2.5 and NH3. METHODS AND RESULTS: In this study, the PM2.5 concentration was measured real-time (every 1 hour) by using beta radiation from the particle dust measuring device (Spirant BAM). NH3 concentration was analyzed real-time by Cavity Ring-Down Spectroscopy (CRDS). The concentrations of ozone (O3) and nitrogen dioxide (NO2) were continuously measured and analyzed for the masses collected on filter papers by ultraviolet photometry and chemiluminescence. CONCLUSION: This study established air pollutant monitoring system in agricultural areas to analyze the NH3 emission characteristics. The amount of PM2.5 and NH3 emission in agriculture was measured. Scientific evidence in agricultural areas was obtained by identifying the emission concentration and characteristics per season (monthly) and per hour.
Keywords
Agriculture; Ammonia; Crop Land; Monitoring; Fine Particulater Matter;
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