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Analysis of roadside air pollutant concentrations and potential health risk of exposure in Hanoi, Vietnam.
Journal of Environmental Science and Health, Part A ( IF 2.1 ) Pub Date : 2020-05-26 , DOI: 10.1080/10934529.2020.1763091
Van Tai Tang 1 , Nguyen Thi Kim Oanh 1, 2, 3 , Eldon R Rene 4 , Tran Ngoc Binh 5
Affiliation  

The large number of vehicles plying in roads is the main cause of traffic jam and air pollution in Hanoi. In this study, the vehicle density and shares of different vehicle types, the traffic flow velocity and roadside air pollutants concentrations were monitored in Chua Boc street, a typical arterial road in the city. The shares of the motorcycle, car and bus fleets in the total on-road traffic in the street were 78.4-87.3, 12.3-20.2 and 0.4-1.4%, respectively. The high density of vehicles caused traffic jam during rush hours and considerably reduced the vehicle speed. The traffic flow velocity during non-rush and rush hours was found to vary from 26.4-34.5 and 10.3-12.1 km/h, respectively. The average concentrations of PM10, PM2.5, SO2, NO2, CO and NMVOC during the rush hours were the following: 117.1 ± 8.5, 65.2 ± 10.6, 113.5 ± 10.9, 138.5 ± 16.0, 6792 ± 998 and 451 ± 71 µg/m3, respectively, which were about 1.9-2.6 times above the levels during non-rush hours. The decrease in vehicle speed during rush hours were strongly correlated with the increase in concentration of PM10 (R2 = 0.732), PM2.5 (R2 = 0.685), SO2 (R2 = 0.578), NO2 (R2 = 0.738), CO (R2 = 0.689) and NMVOC (R2 = 0.747). High levels of these toxic air pollutants in Hanoi city posed a high health risk to humans. Facemask use was more popular among the motorcycle commuters and pedestrians, especially during rush hours, than among the people working for extended time period alongside of the street.



中文翻译:

越南河内的路边空气污染物浓度和暴露的潜在健康风险分析。

河内大量车辆行驶是交通堵塞和空气污染的主要原因。在这项研究中,在城市典型的主干道蔡宝街(Chua Boc street)中,对车辆密度和不同车辆类型的份额,交通流速度和路边空气污染物浓度进行了监测。摩托车,汽车和公交车队在这条街道上的总道路交通量份额分别为78.4-87.3、12.3-20.2和0.4-1.4%。高密度的车辆在高峰时段造成交通拥堵,并大大降低了车速。发现非高峰时间和高峰时间的交通流速分别为26.4-34.5和10.3-12.1 km / h。PM 10,PM 2.5,SO 2,NO 2的平均浓度高峰时段的CO和NMVOC分别为:117.1±8.5、65.2±10.6、113.5±10.9、138.5±16.0、6792±998和451±71 µg / m 3,分别是上述值的1.9-2.6倍非高峰时段的水平。高峰时段车辆速度的下降与PM 10R 2 = 0.732),PM 2.5R 2 = 0.685),SO 2R 2 = 0.578),NO 2R 2 = 0.738),CO(R 2 = 0.689)和NMVOC(R 2= 0.747)。在河内市,这些有毒空气污染物的含量很高,对人类健康构成了很高的风险。在摩托车通勤者和行人中,尤其是在高峰时间,面罩的使用比在街上长时间工作的人更受欢迎。

更新日期:2020-07-13
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