Analysis of Major Inorganic Ion Components of Atmospheric Particulate Matter in Sanyo Onoda, Yamaguchi, Japan

作者：Asono Hitoshi^*; Hasegawa Takashi; Shiraishi Yukihide

来源：Bunseki Kagaku, 2015, 64(10): 775-782.

DOI：10.2116/bunsekikagaku.64.775

• particulate matter
• transboundary air pollution
• inorganic ion component
• PM2.5
• Yamaguchi

Atmospheric particulate matter was collected so as to investigate inorganic ion components (SO42-, NO3-, NH4+, Na+, Cl-, K+, Mg2+, and Ca2+) from March 2013 to February 2014 in SanyoOnoda, Yamaguchi, Japan. SO42-, NO3-, and NH4+ were the dominant ionic species, which accounted for 45 %, 23 %, and 8 % of the total mass of the ion components, respectively. The PM2.5 mass concentrations ranged from 3 mu g m(-3) to 66 mu g m(-3), with an annual mean concentration of 21.2 mu g m(-3). A strong correlation was obtained between the anthropogenic components and PM2.5. Seasonal variations of the ion components and PM2.5 were significant, with the highest concentration being in the spring and the lowest in the summer The meteorological conditions, such as the rainfall, typhoon, wind direction, and temperature effect the concentration of particulate matter. With wind from the western direction (from west-southwest to north-northwest) the concentration of particulate matter was higher by transport of air mass from the Asian continent. These results suggested a high concentration of particulate matter that was dominated by transboundary air pollution.

• 出版日期2015-10