Spatial variation of mass concentration of roadside suspended particulate matter in metropolitan Hong Kong

L. Y. Chan; W. S. Kwok; Shuncheng Lee; C. Y. Chan

doi:10.1016/S1352-2310(00)00505-7

Spatial variation of mass concentration of roadside suspended particulate matter in metropolitan Hong Kong

L. Y. Chan, W. S. Kwok, Shuncheng Lee, C. Y. Chan

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

39 Citations (Scopus)

Abstract

This study conducted roadside particulate sampling to measure the total suspended particulate (TSP), PM10(particles <10μm in aerodynamic diameter) and PM2.5(particles <2.5μm in aerodynamic diameter) mass concentration in 11 urbanized and densely populated districts in Hong Kong. One hundred and thirty-three samples were obtained to measure the mass concentrations of TSP, PM10and PM2.5. According to these results, the TSP, PM10and PM2.5mass concentrations varied from 94.85 to 301.63μgm-3, 67.67 to 142.68μgm-3and 50.01 to 125.12μgm-3, respectively. The PM2.5/PM10ratio of all samples was 0.82 which ranged from 0.62 to 0.95. The PM levels and PM ratios in metropolitan Hong Kong significantly fluctuated from site-to-site and over time. The PM2.5mass concentration in different districts corresponding to urban industrial, new town, urban residential and urban commercial were 77.64, 87.50, 106.96 and 88.54μgm-3, respectively. The PM2.5level is high in Hong Kong, and for individual sampling, more than 60% daily measurements exceeded the NAAQS. The mass fraction of PM2.5in PM10and TSP is relatively high when compared with overseas studies.

Original language	English
Pages (from-to)	3167-3176
Number of pages	10
Journal	Atmospheric Environment
Volume	35
Issue number	18
DOIs	https://doi.org/10.1016/S1352-2310(00)00505-7
Publication status	Published - 4 Aug 2001

Keywords

Hong Kong
Metropolitan
PM and PM 10 2.5
Spatial variation
TSP

ASJC Scopus subject areas

Atmospheric Science
Environmental Science(all)
Pollution

UN SDGs

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

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10.1016/S1352-2310(00)00505-7

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title = "Spatial variation of mass concentration of roadside suspended particulate matter in metropolitan Hong Kong",

abstract = "This study conducted roadside particulate sampling to measure the total suspended particulate (TSP), PM10(particles <10μm in aerodynamic diameter) and PM2.5(particles <2.5μm in aerodynamic diameter) mass concentration in 11 urbanized and densely populated districts in Hong Kong. One hundred and thirty-three samples were obtained to measure the mass concentrations of TSP, PM10and PM2.5. According to these results, the TSP, PM10and PM2.5mass concentrations varied from 94.85 to 301.63μgm-3, 67.67 to 142.68μgm-3and 50.01 to 125.12μgm-3, respectively. The PM2.5/PM10ratio of all samples was 0.82 which ranged from 0.62 to 0.95. The PM levels and PM ratios in metropolitan Hong Kong significantly fluctuated from site-to-site and over time. The PM2.5mass concentration in different districts corresponding to urban industrial, new town, urban residential and urban commercial were 77.64, 87.50, 106.96 and 88.54μgm-3, respectively. The PM2.5level is high in Hong Kong, and for individual sampling, more than 60% daily measurements exceeded the NAAQS. The mass fraction of PM2.5in PM10and TSP is relatively high when compared with overseas studies.",

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AB - This study conducted roadside particulate sampling to measure the total suspended particulate (TSP), PM10(particles <10μm in aerodynamic diameter) and PM2.5(particles <2.5μm in aerodynamic diameter) mass concentration in 11 urbanized and densely populated districts in Hong Kong. One hundred and thirty-three samples were obtained to measure the mass concentrations of TSP, PM10and PM2.5. According to these results, the TSP, PM10and PM2.5mass concentrations varied from 94.85 to 301.63μgm-3, 67.67 to 142.68μgm-3and 50.01 to 125.12μgm-3, respectively. The PM2.5/PM10ratio of all samples was 0.82 which ranged from 0.62 to 0.95. The PM levels and PM ratios in metropolitan Hong Kong significantly fluctuated from site-to-site and over time. The PM2.5mass concentration in different districts corresponding to urban industrial, new town, urban residential and urban commercial were 77.64, 87.50, 106.96 and 88.54μgm-3, respectively. The PM2.5level is high in Hong Kong, and for individual sampling, more than 60% daily measurements exceeded the NAAQS. The mass fraction of PM2.5in PM10and TSP is relatively high when compared with overseas studies.

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Spatial variation of mass concentration of roadside suspended particulate matter in metropolitan Hong Kong

Abstract

Keywords

ASJC Scopus subject areas

UN SDGs

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