Abstract
Morphology and elemental compositions of individual dust particles were investigated with the use of Asian dust samples collected at a site along the Sea of Japan side of the archipelago. Our results indicate the preferential formation of chloride in Ca-containing dust particles (0.1 < Cl/Ca < 0.65) in cases when the particles contain little or no sulfate. Most of them are in an amorphous state and nearly spherical even under high vacuum. A likely explanation for the results is that highly soluble salts such as calcium chloride (CaCl2) are formed as a result of heterogeneous reactions of dust particles with chloride precursor gases (mostly, HCl) in the marine atmosphere. The chloride formation is expected to play an important role in enhancing the hygroscopicity of dust particles.
| Original language | English |
|---|---|
| Article number | L05817 |
| Journal | Geophysical Research Letters |
| Volume | 36 |
| Issue number | 5 |
| DOIs | |
| Publication status | Published - 2009 Mar 16 |
| Externally published | Yes |
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ASJC Scopus subject areas
- Earth and Planetary Sciences(all)
- Geophysics
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Hygroscopic mineral dust particles as influenced by chlorine chemistry in the marine atmosphere. / Tobo, Yutaka; Zhang, Daizhou; Nakata, Naonobu; Yamada, Maromu; Ogata, Hiroko; Hara, Kazutaka; Iwasaka, Yasunobu.
In: Geophysical Research Letters, Vol. 36, No. 5, L05817, 16.03.2009.Research output: Contribution to journal › Article
}
TY - JOUR
T1 - Hygroscopic mineral dust particles as influenced by chlorine chemistry in the marine atmosphere
AU - Tobo, Yutaka
AU - Zhang, Daizhou
AU - Nakata, Naonobu
AU - Yamada, Maromu
AU - Ogata, Hiroko
AU - Hara, Kazutaka
AU - Iwasaka, Yasunobu
PY - 2009/3/16
Y1 - 2009/3/16
N2 - Morphology and elemental compositions of individual dust particles were investigated with the use of Asian dust samples collected at a site along the Sea of Japan side of the archipelago. Our results indicate the preferential formation of chloride in Ca-containing dust particles (0.1 < Cl/Ca < 0.65) in cases when the particles contain little or no sulfate. Most of them are in an amorphous state and nearly spherical even under high vacuum. A likely explanation for the results is that highly soluble salts such as calcium chloride (CaCl2) are formed as a result of heterogeneous reactions of dust particles with chloride precursor gases (mostly, HCl) in the marine atmosphere. The chloride formation is expected to play an important role in enhancing the hygroscopicity of dust particles.
AB - Morphology and elemental compositions of individual dust particles were investigated with the use of Asian dust samples collected at a site along the Sea of Japan side of the archipelago. Our results indicate the preferential formation of chloride in Ca-containing dust particles (0.1 < Cl/Ca < 0.65) in cases when the particles contain little or no sulfate. Most of them are in an amorphous state and nearly spherical even under high vacuum. A likely explanation for the results is that highly soluble salts such as calcium chloride (CaCl2) are formed as a result of heterogeneous reactions of dust particles with chloride precursor gases (mostly, HCl) in the marine atmosphere. The chloride formation is expected to play an important role in enhancing the hygroscopicity of dust particles.
UR - http://www.scopus.com/inward/record.url?scp=65649116170&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=65649116170&partnerID=8YFLogxK
U2 - 10.1029/2008GL036883
DO - 10.1029/2008GL036883
M3 - Article
AN - SCOPUS:65649116170
VL - 36
JO - Geophysical Research Letters
JF - Geophysical Research Letters
SN - 0094-8276
IS - 5
M1 - L05817
ER -