Anthropogenic contribution of magnetic particulates in urban roadside dust

Wonnyon Kim; Seong Jae Doh; Yongjae Yu

doi:10.1016/j.atmosenv.2009.02.056

Anthropogenic contribution of magnetic particulates in urban roadside dust

Wonnyon Kim, Seong Jae Doh, Yongjae Yu

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

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Abstract

Environmental magnetism parameters have been optimized as qualitative proxy indicators of the distribution of anthropogenic particulates, heavy metals and/or organic materials. In the present study, we propose a quantitative magnetic proxy which is suitable for the monitoring of spatial and temporal pollution patterns in urban areas. A total of 1353 roadside dust samples were collected from Seoul, Korea for 13 months. Thermomagnetic data and intensive electron microscopy identified a predominance of carbon-bearing iron-oxides, indicating that anthropogenic particulates mostly originated from fossil fuel combustions. To quantify anthropogenic particulates, an apparent magnetic concentration [AMC_{Fe₃ O₄} = observed saturation magnetization (M_s) / M_s of Fe₃ O₄ (= 92.36 Am² kg^{- 1})] was calculated. AMC_{Fe₃ O₄} showed distinctive spatial and seasonal dependences: highest in industrial areas and lowest in park areas; and maximum in winter and minimum in summer. Seasonal mapping using AMC_{Fe₃ O₄} illustrated that industries in southwestern Seoul were the major pollution source. In addition, dominant westerly winds possibly transported pollutants along topographically lower areas in Seoul.

Original language	English
Pages (from-to)	3137-3144
Number of pages	8
Journal	Atmospheric Environment
Volume	43
Issue number	19
DOIs	https://doi.org/10.1016/j.atmosenv.2009.02.056
Publication status	Published - 2009 Jun

Keywords

Apparent magnetic concentration
Carbon-bearing iron-oxide
Environmental pollution
Magnetic pollution map

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/j.atmosenv.2009.02.056

Cite this

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title = "Anthropogenic contribution of magnetic particulates in urban roadside dust",

abstract = "Environmental magnetism parameters have been optimized as qualitative proxy indicators of the distribution of anthropogenic particulates, heavy metals and/or organic materials. In the present study, we propose a quantitative magnetic proxy which is suitable for the monitoring of spatial and temporal pollution patterns in urban areas. A total of 1353 roadside dust samples were collected from Seoul, Korea for 13 months. Thermomagnetic data and intensive electron microscopy identified a predominance of carbon-bearing iron-oxides, indicating that anthropogenic particulates mostly originated from fossil fuel combustions. To quantify anthropogenic particulates, an apparent magnetic concentration [AMCFe3 O4 = observed saturation magnetization (Ms) / Ms of Fe3 O4 (= 92.36 Am2 kg- 1)] was calculated. AMCFe3 O4 showed distinctive spatial and seasonal dependences: highest in industrial areas and lowest in park areas; and maximum in winter and minimum in summer. Seasonal mapping using AMCFe3 O4 illustrated that industries in southwestern Seoul were the major pollution source. In addition, dominant westerly winds possibly transported pollutants along topographically lower areas in Seoul.",

keywords = "Apparent magnetic concentration, Carbon-bearing iron-oxide, Environmental pollution, Magnetic pollution map",

author = "Wonnyon Kim and Doh, {Seong Jae} and Yongjae Yu",

year = "2009",

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doi = "10.1016/j.atmosenv.2009.02.056",

language = "English",

volume = "43",

pages = "3137--3144",

journal = "Atmospheric Environment",

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AU - Kim, Wonnyon

AU - Doh, Seong Jae

AU - Yu, Yongjae

PY - 2009/6

Y1 - 2009/6

N2 - Environmental magnetism parameters have been optimized as qualitative proxy indicators of the distribution of anthropogenic particulates, heavy metals and/or organic materials. In the present study, we propose a quantitative magnetic proxy which is suitable for the monitoring of spatial and temporal pollution patterns in urban areas. A total of 1353 roadside dust samples were collected from Seoul, Korea for 13 months. Thermomagnetic data and intensive electron microscopy identified a predominance of carbon-bearing iron-oxides, indicating that anthropogenic particulates mostly originated from fossil fuel combustions. To quantify anthropogenic particulates, an apparent magnetic concentration [AMCFe3 O4 = observed saturation magnetization (Ms) / Ms of Fe3 O4 (= 92.36 Am2 kg- 1)] was calculated. AMCFe3 O4 showed distinctive spatial and seasonal dependences: highest in industrial areas and lowest in park areas; and maximum in winter and minimum in summer. Seasonal mapping using AMCFe3 O4 illustrated that industries in southwestern Seoul were the major pollution source. In addition, dominant westerly winds possibly transported pollutants along topographically lower areas in Seoul.

AB - Environmental magnetism parameters have been optimized as qualitative proxy indicators of the distribution of anthropogenic particulates, heavy metals and/or organic materials. In the present study, we propose a quantitative magnetic proxy which is suitable for the monitoring of spatial and temporal pollution patterns in urban areas. A total of 1353 roadside dust samples were collected from Seoul, Korea for 13 months. Thermomagnetic data and intensive electron microscopy identified a predominance of carbon-bearing iron-oxides, indicating that anthropogenic particulates mostly originated from fossil fuel combustions. To quantify anthropogenic particulates, an apparent magnetic concentration [AMCFe3 O4 = observed saturation magnetization (Ms) / Ms of Fe3 O4 (= 92.36 Am2 kg- 1)] was calculated. AMCFe3 O4 showed distinctive spatial and seasonal dependences: highest in industrial areas and lowest in park areas; and maximum in winter and minimum in summer. Seasonal mapping using AMCFe3 O4 illustrated that industries in southwestern Seoul were the major pollution source. In addition, dominant westerly winds possibly transported pollutants along topographically lower areas in Seoul.

KW - Apparent magnetic concentration

KW - Carbon-bearing iron-oxide

KW - Environmental pollution

KW - Magnetic pollution map

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JO - Atmospheric Environment

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ER -

Anthropogenic contribution of magnetic particulates in urban roadside dust

Abstract

Keywords

ASJC Scopus subject areas

UN SDGs

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