Characteristics of acid aerosols in the geothermal area of metropolitan Taipei, Taiwan

Mei Lien Chen; Li Ting Chen; Yen Neng Wang; Sheng Fen Yang; Huei Chen Chen; I. Fang Mao

doi:10.1016/S1352-2310(03)00070-0

Characteristics of acid aerosols in the geothermal area of metropolitan Taipei, Taiwan

Mei Lien Chen, Li Ting Chen, Yen Neng Wang, Sheng Fen Yang, Huei Chen Chen, I. Fang Mao^*

^*Corresponding author for this work

Institute of Environmental and Occupational Health Sciences

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

10 Scopus citations

Abstract

To our knowledge, the characteristics of acid aerosols from sulfur-rich geothermal emissions and human activity have not been reported. This study determines the ambient air concentrations of such chemical components as H₂S, SO₂, HONO, HNO₃, NO₂^-, NO₃^-, SO₄^2- and H⁺ in the geothermal area of metropolitan Taipei. Acid aerosols were sampled using a honeycomb denuder/filter pack sampling system (HDS). The highest H₂S concentration was 680.7ppb and the mean was 185.7ppb at the geothermal sampling site. Very high sulfate concentrations (mean concentration higher than 10μgm^-3) were also observed. The spatial variations are typical of sulfur-containing compounds and H⁺ aerosols; both have concentrations higher closer to the source of geothermal emissions. The daytime means of acid aerosols are generally higher than the corresponding nighttime values. Geothermal emissions, automobile combustion sources and photochemical reactions are concluded to dominate the characteristics of acid aerosols in the studied area. Direct emissions of SO₄^2- and H⁺ with geothermal steam must be further clarified.

Original language	English
Pages (from-to)	2061-2067
Number of pages	7
Journal	Atmospheric Environment
Volume	37
Issue number	15
DOIs	https://doi.org/10.1016/S1352-2310(03)00070-0
State	Published - May 2003

Keywords

Acid aerosol
Geothermal emission
HS
Photochemical reaction
Spatial variation

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10.1016/S1352-2310(03)00070-0

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@article{0e509dcdc35744cab6e6a23813630770,

title = "Characteristics of acid aerosols in the geothermal area of metropolitan Taipei, Taiwan",

abstract = "To our knowledge, the characteristics of acid aerosols from sulfur-rich geothermal emissions and human activity have not been reported. This study determines the ambient air concentrations of such chemical components as H2S, SO2, HONO, HNO3, NO2-, NO3-, SO42- and H+ in the geothermal area of metropolitan Taipei. Acid aerosols were sampled using a honeycomb denuder/filter pack sampling system (HDS). The highest H2S concentration was 680.7ppb and the mean was 185.7ppb at the geothermal sampling site. Very high sulfate concentrations (mean concentration higher than 10μgm-3) were also observed. The spatial variations are typical of sulfur-containing compounds and H+ aerosols; both have concentrations higher closer to the source of geothermal emissions. The daytime means of acid aerosols are generally higher than the corresponding nighttime values. Geothermal emissions, automobile combustion sources and photochemical reactions are concluded to dominate the characteristics of acid aerosols in the studied area. Direct emissions of SO42- and H+ with geothermal steam must be further clarified.",

keywords = "Acid aerosol, Geothermal emission, HS, Photochemical reaction, Spatial variation",

author = "Chen, {Mei Lien} and Chen, {Li Ting} and Wang, {Yen Neng} and Yang, {Sheng Fen} and Chen, {Huei Chen} and Mao, {I. Fang}",

note = "Funding Information: The authors would like to thank the National Science Council of the Republic of China, Taiwan (Contract No. NSC 89-EPA-Z-010-001) and the Environmental Protection Agency of the Republic of China, Taiwan for financially supporting this research.",

year = "2003",

month = may,

doi = "10.1016/S1352-2310(03)00070-0",

language = "English",

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journal = "Atmospheric Environment",

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T1 - Characteristics of acid aerosols in the geothermal area of metropolitan Taipei, Taiwan

AU - Chen, Mei Lien

AU - Chen, Li Ting

AU - Wang, Yen Neng

AU - Yang, Sheng Fen

AU - Chen, Huei Chen

AU - Mao, I. Fang

N1 - Funding Information: The authors would like to thank the National Science Council of the Republic of China, Taiwan (Contract No. NSC 89-EPA-Z-010-001) and the Environmental Protection Agency of the Republic of China, Taiwan for financially supporting this research.

PY - 2003/5

Y1 - 2003/5

N2 - To our knowledge, the characteristics of acid aerosols from sulfur-rich geothermal emissions and human activity have not been reported. This study determines the ambient air concentrations of such chemical components as H2S, SO2, HONO, HNO3, NO2-, NO3-, SO42- and H+ in the geothermal area of metropolitan Taipei. Acid aerosols were sampled using a honeycomb denuder/filter pack sampling system (HDS). The highest H2S concentration was 680.7ppb and the mean was 185.7ppb at the geothermal sampling site. Very high sulfate concentrations (mean concentration higher than 10μgm-3) were also observed. The spatial variations are typical of sulfur-containing compounds and H+ aerosols; both have concentrations higher closer to the source of geothermal emissions. The daytime means of acid aerosols are generally higher than the corresponding nighttime values. Geothermal emissions, automobile combustion sources and photochemical reactions are concluded to dominate the characteristics of acid aerosols in the studied area. Direct emissions of SO42- and H+ with geothermal steam must be further clarified.

AB - To our knowledge, the characteristics of acid aerosols from sulfur-rich geothermal emissions and human activity have not been reported. This study determines the ambient air concentrations of such chemical components as H2S, SO2, HONO, HNO3, NO2-, NO3-, SO42- and H+ in the geothermal area of metropolitan Taipei. Acid aerosols were sampled using a honeycomb denuder/filter pack sampling system (HDS). The highest H2S concentration was 680.7ppb and the mean was 185.7ppb at the geothermal sampling site. Very high sulfate concentrations (mean concentration higher than 10μgm-3) were also observed. The spatial variations are typical of sulfur-containing compounds and H+ aerosols; both have concentrations higher closer to the source of geothermal emissions. The daytime means of acid aerosols are generally higher than the corresponding nighttime values. Geothermal emissions, automobile combustion sources and photochemical reactions are concluded to dominate the characteristics of acid aerosols in the studied area. Direct emissions of SO42- and H+ with geothermal steam must be further clarified.

KW - Acid aerosol

KW - Geothermal emission

KW - HS

KW - Photochemical reaction

KW - Spatial variation

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DO - 10.1016/S1352-2310(03)00070-0

M3 - Article

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VL - 37

SP - 2061

EP - 2067

JO - Atmospheric Environment

JF - Atmospheric Environment

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ER -

Characteristics of acid aerosols in the geothermal area of metropolitan Taipei, Taiwan

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Keywords

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