Ambient particulate pollution during Chinese Spring Festival in urban Lanzhou, Northwestern China

Developmental Biology

Daiying Yin²  Ye Yu¹  Jianjun He³  Suping Zhao³  Na Liu³ 

[1] Key Laboratory of Land Surface Process and Climate Change in Cold and Arid Regions, Cold & Arid Regions Environmental & Engineering Research Institute, Chinese Academy of Sciences, Lanzhou 730000, China$$;Key Laboratory of Desert and Desertification, Cold & Arid Regions Environmental & Engineering Research Institute, Chinese Academy of Sciences, Lanzhou 730000, China$$;Key Laboratory of Land Surface Process and Climate Change in Cold and Arid Regions, Cold & Arid Regions Environmental & Engineering Research Institute, Chinese Academy of Sciences, Lanzhou 730000, China$$University of Chinese Academy of Sciences, Beijing 100049, China$$

关键词: Particulate pollution;    fireworks;    Lanzhou;    Spring Festival;   

DOI  :  10.5094/APR.2014.039

学科分类：农业科学（综合）

来源: Dokuz Eylul Universitesi * Department of Environmental Engineering

【 摘 要 】

The effect of firework displays on ambient particulate pollution in a typical valley city in Northwestern China was evaluated based on high temporal resolution atmospheric particle size distribution (10–10 000 nm) data and particle mass concentrations in different sizes obtained during 25^th January – 24^th February, 2013. Firework displays have significant impact on particle number concentrations in accumulation mode (100–1 000 nm), especially in 200–500 nm, as well as PM₁ mass concentrations. The hourly mean number concentration in 200–500 nm and PM₁ mass concentration during the peak hour of firework displays were 11 800.2 ± 2 548.0 cm^–3 and 214.1 ± 31.2 μg m⁻³, which are approximately 6 times and 2 times of that before the festival, respectively, with a maximum10–min mean number concentration in size range 100–1 000 nm reaching 3.8 × 10⁴ cm⁻³ on the New Year's Eve (00:10 BT 10^th February, 2013). It was estimated that local emissions and firework displays contributed 74.6% and 37.0%, respectively, to the number concentration of particles less than 1 000 nm. On short–time scale, the contribution of firework displays on local particulate pollution is obvious and should not be ignored, especially on fine particulate pollution.

【 授权许可】

Unknown   

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