Influences of sulfate and nitrate on the hygroscopic behaviour of coarse dust particles

Zongbo Shi, Daizhou Zhang, Masahiko Hayashi, Hiroko Ogata, Hezhe Ji, Wataru Fujiie

研究成果: Article

77 引用 (Scopus)

抄録

Asian dust particles of diameter >1 μm collected in southwestern Japan were analyzed with environmental scanning electron microscopy. The hygroscopic behaviour of sea salt-free dust particles were investigated with respect to their contents of sulfate and nitrate. Sulfate- and nitrate-free dust particles (not containing sulfur and nitrogen), as well as sulfate-containing ones, did not change in their crystalline morphology as relative humidity (RH) was increased from 15% to 90%. In contrast, calcium nitrate-containing dust particles appeared in aqueous phase even at 15% RH. These results indicate that nitrate formation on coarse dust particles could substantially enhance the hydrophilicity of the particles and possibly vice versa, whereas sulfate formation could not.

元の言語English
ページ(範囲)822-827
ページ数6
ジャーナルAtmospheric Environment
42
発行部数4
DOI
出版物ステータスPublished - 2008 2
外部発表Yes

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Particles (particulate matter)
Dust
Nitrates
sulfate
nitrate
dust
Atmospheric humidity
relative humidity
Hydrophilicity
sea salt
Calcium
Sulfur
Sulfates
particle
Salts
Crystalline materials
Nitrogen
calcium
scanning electron microscopy
Scanning electron microscopy

ASJC Scopus subject areas

  • Atmospheric Science
  • Environmental Science(all)
  • Pollution

これを引用

Influences of sulfate and nitrate on the hygroscopic behaviour of coarse dust particles. / Shi, Zongbo; Zhang, Daizhou; Hayashi, Masahiko; Ogata, Hiroko; Ji, Hezhe; Fujiie, Wataru.

:: Atmospheric Environment, 巻 42, 番号 4, 02.2008, p. 822-827.

研究成果: Article

Shi, Zongbo ; Zhang, Daizhou ; Hayashi, Masahiko ; Ogata, Hiroko ; Ji, Hezhe ; Fujiie, Wataru. / Influences of sulfate and nitrate on the hygroscopic behaviour of coarse dust particles. :: Atmospheric Environment. 2008 ; 巻 42, 番号 4. pp. 822-827.
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AU - Ji, Hezhe

AU - Fujiie, Wataru

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