@article{oai:niit.repo.nii.ac.jp:00000891,
 author = {福崎, 紀夫 and 大泉, 毅},
 journal = {新潟県衛生公害研究所年報},
 month = {Oct},
 note = {Particle-size distribution and atmospheric concentration of inorganic ions (Na^+, K^+, Ca^<2+>, Mg^<2+>, NH_4^+, SO_4^<2->, NO_3^- and Cl^-) in atmospheric suspended particles (ASP) collected in central Niigata Plain were determined. Particles were size-fractionated in an Andersen impactor backed up by a Teflon filter over a 24-month period from April, 1990 to March, 1992. The water-soluble components in the sample were extracted in an ultrasonic bath and analyzed by ion chromatography, atomic absorption spectrophotometry and spectrophotometry. Seasonal variation in atmospheric concentrations and size distribution were investigated. Particle-size distribution of ASP and each ionic component was roughly divided into four main patterns, (1)Distribution concentrated into fine particles over the year such as NH_4^+ and SO_4^<2->, (2)Distribution predominated in coarse particles over the year such as Na^+, Mg^<2+>, and Cl^-, (3)Distribution as a bimodal pattern over the year such as ASP and K^+, and (4)Distribution differing in summer and in winter such as NO_3^-. Seasonal size-distribution patterns of Cl^- and NO_3^- remarkably differed from those reported for urban atmosphere.},
 pages = {107--112},
 title = {新潟平野中央部における浮遊紛じん中の水溶性無機イオン成分の粒度分布},
 volume = {7},
 year = {1992}
}