TY - JOUR
T1 - Optical and chemical properties of urban aerosols in sendai and Sapporo, Japan
AU - Hayasaka, Tadahiro
AU - Nakajima, Teruyuki
AU - Ohta, Sachio
AU - Tanaka, Masayuki
PY - 1992/8
Y1 - 1992/8
N2 - 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.
AB - 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.
KW - Atmospheric aerosol
KW - chemical component
KW - complex refractive index
KW - inversion-library method
KW - polar nephelometer
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U2 - 10.1016/0960-1686(92)90090-8
DO - 10.1016/0960-1686(92)90090-8
M3 - Article
AN - SCOPUS:0026910994
SN - 0960-1686
VL - 26
SP - 2055
EP - 2062
JO - Atmospheric Environment - Part A General Topics
JF - Atmospheric Environment - Part A General Topics
IS - 11
ER -