Long-term ambient air pollution levels in four Chinese cities: Inter-city and intra-city concentration gradients for epidemiological studies

Zhengmin Qian, Junfeng Zhang, Fusheng Wei, William E. Wilson, Robert S. Chapman

Research output: Contribution to journalArticle

48 Citations (Scopus)

Abstract

The field data collection of an air pollution epidemiologic study was carried out from 1993 to 1996 in four Chinese cities of Lanzhou, Chongqing, Wuhan, and Guangzhou. In each city, an urban district and a suburban district were selected. Ambient concentrations of total suspended particles (TSP), size-fractionated particulate matter including PM2.5, PM2.5-10, and PM10, sulfur dioxide (SO2), and oxides of nitrogen (NOx) were measured in these districts. The results indicate the presence of wide inter-city and intra-city gradients in long-term ambient levels of these measured pollutants. Across the eight districts, the 1993-1996 4-year means of TSP, SO2, and NOx ranged from 198 to 659 μg/m3, from 14.6 to 331 μ/m3, and from 31.5 to 239 μg/m3, respectively, and the 1995-1996 2-year means of PM2.5, PM2.5-10, and PM10 ranged from 51.5 to 142 μg/m3, from 29.2 to 107 μg/m3, and from 80.7 to 232 μg/m3, respectively. These pollution ranges substantially extended the upper end of the pollution ranges of previous air pollution epidemiologic studies conducted in North America and Europe. In each district, significant correlations among the measured pollutants were observed for daily concentrations. However, the gradient patterns in long-term means of different pollutants were different across the eight districts. (e.g., PM2.5-10 and TSP were highest in the Lanzhou urban district, PM2.5 and PM10 were highest in the Guangzhou urban district, SO2 was highest in the Chongqing urban district, and NOx was highest in the Guangzhou urban district). In general, seasonal variations were present in the ambient concentrations with high levels often occurring in winter months. The eight districts may be classified into four district clusters based on integrated levels of all measured pollutants. These features of the ambient air pollution have important implications for epidemiological studies and may provide unique opportunities to study exposure-effects relationships in the four Chinese cities.

Original languageEnglish (US)
Pages (from-to)341-351
Number of pages11
JournalJournal of Exposure Analysis and Environmental Epidemiology
Volume11
Issue number5
DOIs
StatePublished - Nov 13 2001

Fingerprint

Air Pollution
Air pollution
ambient air
Epidemiologic Studies
atmospheric pollution
Pollution
pollutant
Nitrogen Oxides
Sulfur Dioxide
Particulate Matter
Sulfur dioxide
pollution
Particle size
Nitrogen
North America
Oxides
Particle Size
sulfur dioxide
particulate matter
seasonal variation

All Science Journal Classification (ASJC) codes

  • Environmental Chemistry
  • Toxicology
  • Environmental Science(all)
  • Pollution
  • Public Health, Environmental and Occupational Health
  • Health, Toxicology and Mutagenesis

Cite this

@article{dc95986bece14b3995e523c4967e9c44,
title = "Long-term ambient air pollution levels in four Chinese cities: Inter-city and intra-city concentration gradients for epidemiological studies",
abstract = "The field data collection of an air pollution epidemiologic study was carried out from 1993 to 1996 in four Chinese cities of Lanzhou, Chongqing, Wuhan, and Guangzhou. In each city, an urban district and a suburban district were selected. Ambient concentrations of total suspended particles (TSP), size-fractionated particulate matter including PM2.5, PM2.5-10, and PM10, sulfur dioxide (SO2), and oxides of nitrogen (NOx) were measured in these districts. The results indicate the presence of wide inter-city and intra-city gradients in long-term ambient levels of these measured pollutants. Across the eight districts, the 1993-1996 4-year means of TSP, SO2, and NOx ranged from 198 to 659 μg/m3, from 14.6 to 331 μ/m3, and from 31.5 to 239 μg/m3, respectively, and the 1995-1996 2-year means of PM2.5, PM2.5-10, and PM10 ranged from 51.5 to 142 μg/m3, from 29.2 to 107 μg/m3, and from 80.7 to 232 μg/m3, respectively. These pollution ranges substantially extended the upper end of the pollution ranges of previous air pollution epidemiologic studies conducted in North America and Europe. In each district, significant correlations among the measured pollutants were observed for daily concentrations. However, the gradient patterns in long-term means of different pollutants were different across the eight districts. (e.g., PM2.5-10 and TSP were highest in the Lanzhou urban district, PM2.5 and PM10 were highest in the Guangzhou urban district, SO2 was highest in the Chongqing urban district, and NOx was highest in the Guangzhou urban district). In general, seasonal variations were present in the ambient concentrations with high levels often occurring in winter months. The eight districts may be classified into four district clusters based on integrated levels of all measured pollutants. These features of the ambient air pollution have important implications for epidemiological studies and may provide unique opportunities to study exposure-effects relationships in the four Chinese cities.",
author = "Zhengmin Qian and Junfeng Zhang and Fusheng Wei and Wilson, {William E.} and Chapman, {Robert S.}",
year = "2001",
month = "11",
day = "13",
doi = "10.1038/sj.jea.7500170",
language = "English (US)",
volume = "11",
pages = "341--351",
journal = "Journal of Exposure Science and Environmental Epidemiology",
issn = "1559-0631",
publisher = "Nature Publishing Group",
number = "5",

}

Long-term ambient air pollution levels in four Chinese cities : Inter-city and intra-city concentration gradients for epidemiological studies. / Qian, Zhengmin; Zhang, Junfeng; Wei, Fusheng; Wilson, William E.; Chapman, Robert S.

In: Journal of Exposure Analysis and Environmental Epidemiology, Vol. 11, No. 5, 13.11.2001, p. 341-351.

Research output: Contribution to journalArticle

TY - JOUR

T1 - Long-term ambient air pollution levels in four Chinese cities

T2 - Inter-city and intra-city concentration gradients for epidemiological studies

AU - Qian, Zhengmin

AU - Zhang, Junfeng

AU - Wei, Fusheng

AU - Wilson, William E.

AU - Chapman, Robert S.

PY - 2001/11/13

Y1 - 2001/11/13

N2 - The field data collection of an air pollution epidemiologic study was carried out from 1993 to 1996 in four Chinese cities of Lanzhou, Chongqing, Wuhan, and Guangzhou. In each city, an urban district and a suburban district were selected. Ambient concentrations of total suspended particles (TSP), size-fractionated particulate matter including PM2.5, PM2.5-10, and PM10, sulfur dioxide (SO2), and oxides of nitrogen (NOx) were measured in these districts. The results indicate the presence of wide inter-city and intra-city gradients in long-term ambient levels of these measured pollutants. Across the eight districts, the 1993-1996 4-year means of TSP, SO2, and NOx ranged from 198 to 659 μg/m3, from 14.6 to 331 μ/m3, and from 31.5 to 239 μg/m3, respectively, and the 1995-1996 2-year means of PM2.5, PM2.5-10, and PM10 ranged from 51.5 to 142 μg/m3, from 29.2 to 107 μg/m3, and from 80.7 to 232 μg/m3, respectively. These pollution ranges substantially extended the upper end of the pollution ranges of previous air pollution epidemiologic studies conducted in North America and Europe. In each district, significant correlations among the measured pollutants were observed for daily concentrations. However, the gradient patterns in long-term means of different pollutants were different across the eight districts. (e.g., PM2.5-10 and TSP were highest in the Lanzhou urban district, PM2.5 and PM10 were highest in the Guangzhou urban district, SO2 was highest in the Chongqing urban district, and NOx was highest in the Guangzhou urban district). In general, seasonal variations were present in the ambient concentrations with high levels often occurring in winter months. The eight districts may be classified into four district clusters based on integrated levels of all measured pollutants. These features of the ambient air pollution have important implications for epidemiological studies and may provide unique opportunities to study exposure-effects relationships in the four Chinese cities.

AB - The field data collection of an air pollution epidemiologic study was carried out from 1993 to 1996 in four Chinese cities of Lanzhou, Chongqing, Wuhan, and Guangzhou. In each city, an urban district and a suburban district were selected. Ambient concentrations of total suspended particles (TSP), size-fractionated particulate matter including PM2.5, PM2.5-10, and PM10, sulfur dioxide (SO2), and oxides of nitrogen (NOx) were measured in these districts. The results indicate the presence of wide inter-city and intra-city gradients in long-term ambient levels of these measured pollutants. Across the eight districts, the 1993-1996 4-year means of TSP, SO2, and NOx ranged from 198 to 659 μg/m3, from 14.6 to 331 μ/m3, and from 31.5 to 239 μg/m3, respectively, and the 1995-1996 2-year means of PM2.5, PM2.5-10, and PM10 ranged from 51.5 to 142 μg/m3, from 29.2 to 107 μg/m3, and from 80.7 to 232 μg/m3, respectively. These pollution ranges substantially extended the upper end of the pollution ranges of previous air pollution epidemiologic studies conducted in North America and Europe. In each district, significant correlations among the measured pollutants were observed for daily concentrations. However, the gradient patterns in long-term means of different pollutants were different across the eight districts. (e.g., PM2.5-10 and TSP were highest in the Lanzhou urban district, PM2.5 and PM10 were highest in the Guangzhou urban district, SO2 was highest in the Chongqing urban district, and NOx was highest in the Guangzhou urban district). In general, seasonal variations were present in the ambient concentrations with high levels often occurring in winter months. The eight districts may be classified into four district clusters based on integrated levels of all measured pollutants. These features of the ambient air pollution have important implications for epidemiological studies and may provide unique opportunities to study exposure-effects relationships in the four Chinese cities.

UR - http://www.scopus.com/inward/record.url?scp=0034750214&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=0034750214&partnerID=8YFLogxK

U2 - 10.1038/sj.jea.7500170

DO - 10.1038/sj.jea.7500170

M3 - Article

C2 - 11687907

AN - SCOPUS:0034750214

VL - 11

SP - 341

EP - 351

JO - Journal of Exposure Science and Environmental Epidemiology

JF - Journal of Exposure Science and Environmental Epidemiology

SN - 1559-0631

IS - 5

ER -