Optical and chemical properties of urban aerosols in sendai and Sapporo, Japan

Tadahiro Hayasaka, Teruyuki Nakajima, Sachio Ohta, Masayuki Tanaka

Research output: Contribution to journalArticlepeer-review

18 Citations (Scopus)


Simultaneous measurements of size distribution, complex refractive index and chemical components of urban aerosols were intermittently carried out in Sendai and Sapporo, Japan, for the period from February 1986 to June 1987. Applying an inversion-library method to the phase functions measured by a polar nephelometer, size distribution and complex refractive index were retrieved. On the other hand, chemical components were analysed for the aerosol samples on a quartz fiber filter and a Teflon filter collected by two high-volume samplers. Among various components, elemental carbon as well as water content is most effective for the optical properties and its effect is found to be qualitatively different between winter and the other seasons. This difference seems to depend on the contribution of coarse particles.

Original languageEnglish
Pages (from-to)2055-2062
Number of pages8
JournalAtmospheric Environment Part A, General Topics
Issue number11
Publication statusPublished - 1992 Aug


  • Atmospheric aerosol
  • chemical component
  • complex refractive index
  • inversion-library method
  • polar nephelometer

ASJC Scopus subject areas

  • Pollution


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