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Sampling Analysis of Fine Particulate Matter(PM2.5) of Taichung City in 2016

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This study is mainly based on sampling analysis, including PM2.5 sampling of the perimeters, in-stack and kitchens, and monitoring hazardous air pollutants in Central Taiwan Science Park. With the implementation of this study, we have been able to obtain accurate and reliable environmental data, providing a basis for strategical development and practice for the municipality. The results of manual sampling of PM2.5 once every six days showed that out of the four stations (Wuqi, Houli, Xitun and Dali), PM2.5 in Dali’s manual monitor station did not meet air quality standards (24 hour average of 35μg/m3) with the highest concentration. PM2.5 composition analyses showed that Houli and Wuqi stations had higher concentrations of sulfate (SO42-), while Xitun and Dali’s stations had highest concentrations of organic carbon (OC). Results of PM2.5 monitor of in-stack showed: concentrations of emissions from Taichung Power Plant coal-fired boilers were FPM 1.42mg/Nm3, CPM 13.9mg/Nm3; concentrations of emissions from Dragon Steel Plant blast furnace gas boilers were FPM 0.28mg/Nm3, CPM 5.07mg/Nm3; concentrations of emissions from Hon Chuan Enterprise Plant oil boilers were FPM 34.2mg/Nm3, CPM 78.9mg/Nm3. Analysis of historical monitored results showed that oil-fueled boilers with no control equipment had higher concentrations of FPM and CPM emissions. Results of monitoring hazardous air pollutants in Central Taiwan Science Park showed that concentrations of controlled pollutants were much lower than regulatory standards. Concentrations of volatile organic compound at the Taichung site were 87.1μg/m3, and 71.5μg/m3 at the Houli site; acetone, toluene and methanol pollutants had higher concentrations; concentrations of inorganic acids at the Taichung site were 18.01 μg/m3, and 17.73μg/m3 at the Houli site. This study recommends that priority should be given to the improvement of PM2.5 emissions from oil-fuel boilers. During high PM2.5 pollution periods, reducing traffic emissions in each area is most effective in reducing pollutant emissions. For control of stationary emissions, emission reduction for coal-fired boilers and electric arc furnaces should be required. For fugitive emissions, it is recommended to implement regulation of burning of agricultural waste in the spring season, as well as strict control of construction, management of fugitive emissions from exposed sites complemented with street sprinkling in the autumn season.
Keyword
Fine Particulate Matter(PM2.5),Filterable Particulate Matter(FPM),Condensable Particulate Matter(CPM),Hazardous Air Pollutants
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