Journal of Atmospheric and Environmental Optics, Volume. 19, Issue 3, 357(2024)
Personal exposure levels of air pollutants in two commuting modes in Urumqi City
Figures & Tables(10)
Fig. 2. Variation of personal exposure concentrations of air pollutants in morning, evening and off-peak periods. (a) PM2.5; (b) O3; (c) NO2
Fig. 3. Daily variation of personal exposure concentrations of air pollutants. (a) PM2.5; (b) O3; (c) NO2
Fig. 4. Variation of individual exposure concentrations of air pollutants on weekdays and weekends. (a) PM2.5; (b) O3; (c) NO2
Fig. 5. Spatial distribution of personal exposure concentration of air pollutants during monitoring period. (a) Bus PM2.5; (b) walking PM2.5; (c) bus O3; (d) walking O3; (e) bus PM2.5; (f) walking NO2
Table 1. Basic parameters of instruments
View tableView in ArticleTable 1. Basic parameters of instruments
Instrument model Monitoring item Measurement
range
Accuracy Resolution Sampling
inverval/s
TSI 8530 PM2.5 0.001-400 mg·m-3 0.001 mg·m-3 5 Aeroqual S500 O3 0-0.982 mg·m-3 ±10% 0.002 mg·m-3 60 NO2 0-1.882 mg·m-3 ±10% 0.002 mg·m-3 Kestrel
5500
Temperature -29-70 ℃ 0.5℃ 0.1 ℃ 5 Humidity 10%-90% ±2% 0.1% Wind speed 0.6-40 m/s ±3% 0.1 m/s Wind direction 0-360° ±5° 1° Garmin
eTrex 201
Position 15 m 1
Table 2. Correlation between the exposure concentrations of various pollutants by bus
View tableView in ArticleTable 2. Correlation between the exposure concentrations of various pollutants by bus
Pollutant PM2.5 O3 NO2 PM2.5 1 ― ― O3 0.898** 1 ― NO2 0.849** 0.736** 1
Table 3. Correlation between the exposure concentrations of various pollutants by walking
View tableView in ArticleTable 3. Correlation between the exposure concentrations of various pollutants by walking
Pollutant PM2.5 O3 NO2 PM2.5 1 ― ― O3 -0.325** 1 ― NO2 -0.289** 0.285** 1
Table 4. Correlation between the exposure concentrations and the background of various pollutants under commuting modes of bus and walking
View tableView in ArticleTable 4. Correlation between the exposure concentrations and the background of various pollutants under commuting modes of bus and walking
Pollutant Bus Walking PM2.5 O3 NO2 PM2.5 O3 NO2 Background value PM2.5 0.633** ― ― 0.560** ― ― Background value O3 ― 0.543** ― ― 0.755** ― Background value NO2 ― ― 0.272 ― ― -0.31
Table 5. Correlation between the exposure concentrations of various pollutants and the meteorological factors under commuting modes of bus and walking
View tableView in ArticleTable 5. Correlation between the exposure concentrations of various pollutants and the meteorological factors under commuting modes of bus and walking
Pollutant PM2.5 O3 NO2 Bus Walking Bus Walking Bus Walking Temperature 0.258** -0.123** 0.209** 0.241** 0.344** 0.212** Humidity -0.039 0.181** -0.028 -0.230* -0.112* -0.146** Wind speed -0.026 0.148** 0.090 0.146** -0.017 -0.141** Wind direction 0.192** 0.196** 0.150** -0.134** 0.369** 0.055
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Dan ZHUANG, Xuegang CHEN, Yu DONG. Personal exposure levels of air pollutants in two commuting modes in Urumqi City[J]. Journal of Atmospheric and Environmental Optics, 2024, 19(3): 357
Paper Information
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Received: Nov. 28, 2022
Accepted: --
Published Online: Jul. 17, 2024
The Author Email: ZHUANG Dan (zd0608@foxmail.com)
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