Chemical characteristics of aerosols at coastal station in Hong Kong. I. Seasonal variation of major ions, halogens and mineral dusts between 1995 and 1996

Z. L. Cheng; Ka Se Lam; L. Y. Chan; Tao Wang; K. K. Cheng

doi:10.1016/S1352-2310(99)00343-X

Chemical characteristics of aerosols at coastal station in Hong Kong. I. Seasonal variation of major ions, halogens and mineral dusts between 1995 and 1996

Z. L. Cheng, Ka Se Lam, L. Y. Chan, Tao Wang, K. K. Cheng

Research output: Journal article publication › Journal article › Academic research › peer-review

160 Citations (Scopus)

Abstract

Aerosols samples (total suspended particulate 'TSP' and PM10particulate) were collected at coastal monitoring station in Hong Kong between 1995 and 1996. They were analyzed to investigate the seasonal cycle among major ions (Na+, NH4+-N, K+, Mg2+, Ca2+, Cl-, NO3-, and SO42-), halogen elements (Br, I) and mineral dusts. The concentration of major ions showed a summer minimum and a winter maximum in a coastal region of Hong Kong. Halogen (Br, I) and dust concentrations exhibited a very similar variation. From the molar equivalence of Na+and Cl-, it was found that the Cl-in TSP or PM10was deviated from sea-salt (NaCl) component. Bromine (Br) in aerosols evidently originated from marine source but iodine (I) in aerosols may have been generated from natural and anthropogenic sources including possible biomass emission. The ratios of nonsea-salt sulfate (nss-SO42-) to nitrate (NO3-) and trace elements (As, Sb, Se, Pb, V and Zn) were used to explain the different pollution emissions.

Original language	English
Pages (from-to)	2771-2783
Number of pages	13
Journal	Atmospheric Environment
Volume	34
Issue number	17
DOIs	https://doi.org/10.1016/S1352-2310(99)00343-X
Publication status	Published - 1 Jan 2000

Keywords

Dust
Nonsea-salt sulfate
PM 10
Trace elements
TSP

ASJC Scopus subject areas

General Environmental Science
Atmospheric Science

UN SDGs

This output contributes to the following UN Sustainable Development Goals (SDGs)

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10.1016/S1352-2310(99)00343-X

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title = "Chemical characteristics of aerosols at coastal station in Hong Kong. I. Seasonal variation of major ions, halogens and mineral dusts between 1995 and 1996",

abstract = "Aerosols samples (total suspended particulate 'TSP' and PM10particulate) were collected at coastal monitoring station in Hong Kong between 1995 and 1996. They were analyzed to investigate the seasonal cycle among major ions (Na+, NH4+-N, K+, Mg2+, Ca2+, Cl-, NO3-, and SO42-), halogen elements (Br, I) and mineral dusts. The concentration of major ions showed a summer minimum and a winter maximum in a coastal region of Hong Kong. Halogen (Br, I) and dust concentrations exhibited a very similar variation. From the molar equivalence of Na+and Cl-, it was found that the Cl-in TSP or PM10was deviated from sea-salt (NaCl) component. Bromine (Br) in aerosols evidently originated from marine source but iodine (I) in aerosols may have been generated from natural and anthropogenic sources including possible biomass emission. The ratios of nonsea-salt sulfate (nss-SO42-) to nitrate (NO3-) and trace elements (As, Sb, Se, Pb, V and Zn) were used to explain the different pollution emissions.",

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Chemical characteristics of aerosols at coastal station in Hong Kong. I. Seasonal variation of major ions, halogens and mineral dusts between 1995 and 1996. / Cheng, Z. L.; Lam, Ka Se; Chan, L. Y. et al.
In: Atmospheric Environment, Vol. 34, No. 17, 01.01.2000, p. 2771-2783.

Research output: Journal article publication › Journal article › Academic research › peer-review

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AU - Cheng, K. K.

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KW - Nonsea-salt sulfate

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KW - Trace elements

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Chemical characteristics of aerosols at coastal station in Hong Kong. I. Seasonal variation of major ions, halogens and mineral dusts between 1995 and 1996

Abstract

Keywords

ASJC Scopus subject areas

UN SDGs

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