富士山南東麓における水溶性酸性ガス及び粒子状物質に含まれる陰イオンのオンライン観測

During the summer of 2018, we monitored the concentrations of water-soluble acid gases and particulate anions at the southeastern foot (1284 m a.s.l.) of Mt. Fuji, Japan, using gas/particle-ion chromatographs. All samples analyzed contained quantifiable levels of anions. The average concentrations of acid gas and particulate anion concentrations were, respectively, 1.10±0.37 nmol m−3 for HCl, 3.49±1.72 nmol m−3 for HONO, 1.23±0.59 nmol m−3 for HNO3, 0.33±0.20 nmol m−3 for SO2, 3.61±3.69 nmol m−3 for Cl−, 0.65±0.22 nmol m−3 for NO2−, 4.29±2.98 nmol m−3 for NO3−, and 4.47±3.57 nmol m−3 for SO42−. We found that the concentration of soluble acidic gases increased during the daytime, while no characteristic diurnal patterns were observed in the particulate anions.