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

doi:10.1016/j.atmosenv.2007.10.037

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

Research output: Contribution to journal › Article › peer-review

84 Citations (Scopus)

Abstract

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.

Original language	English
Pages (from-to)	822-827
Number of pages	6
Journal	Atmospheric Environment
Volume	42
Issue number	4
DOIs	https://doi.org/10.1016/j.atmosenv.2007.10.037
Publication status	Published - 2008 Feb
Externally published	Yes

Keywords

Asian dust
Calcium nitrate
Gypsum
Heterogeneous chemistry
Hygroscopicity
Mineral aerosol

ASJC Scopus subject areas

Atmospheric Science
Environmental Science(all)
Pollution

Access to Document

10.1016/j.atmosenv.2007.10.037

Fingerprint Dive into the research topics of 'Influences of sulfate and nitrate on the hygroscopic behaviour of coarse dust particles'. Together they form a unique fingerprint.

Cite this

@article{0fb5fcdae26945a88d4f6e694ac75a74,

title = "Influences of sulfate and nitrate on the hygroscopic behaviour of coarse dust particles",

abstract = "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.",

keywords = "Asian dust, Calcium nitrate, Gypsum, Heterogeneous chemistry, Hygroscopicity, Mineral aerosol",

author = "Zongbo Shi and Daizhou Zhang and Masahiko Hayashi and Hiroko Ogata and Hezhe Ji and Wataru Fujiie",

year = "2008",

month = feb,

doi = "10.1016/j.atmosenv.2007.10.037",

language = "English",

volume = "42",

pages = "822--827",

journal = "Atmospheric Environment",

issn = "1352-2310",

publisher = "Elsevier Limited",

number = "4",

}

TY - JOUR

T1 - Influences of sulfate and nitrate on the hygroscopic behaviour of coarse dust particles

AU - Shi, Zongbo

AU - Zhang, Daizhou

AU - Hayashi, Masahiko

AU - Ogata, Hiroko

AU - Ji, Hezhe

AU - Fujiie, Wataru

PY - 2008/2

Y1 - 2008/2

N2 - 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.

AB - 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.

KW - Asian dust

KW - Calcium nitrate

KW - Gypsum

KW - Heterogeneous chemistry

KW - Hygroscopicity

KW - Mineral aerosol

UR - http://www.scopus.com/inward/record.url?scp=38649142134&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=38649142134&partnerID=8YFLogxK

U2 - 10.1016/j.atmosenv.2007.10.037

DO - 10.1016/j.atmosenv.2007.10.037

M3 - Article

AN - SCOPUS:38649142134

VL - 42

SP - 822

EP - 827

JO - Atmospheric Environment

JF - Atmospheric Environment

SN - 1352-2310

IS - 4

ER -