Langfang Environmental Protection Bureau

Langfang, China

Langfang Environmental Protection Bureau

Langfang, China
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Zhao Q.,Tsinghua University | Zhao Q.,Make Environment Science & Technology Co. | Du Z.,National Research Center for Environmental Analysis and Measurement | Hu J.,Tsinghua University | And 3 more authors.
Huanjing Kexue Xuebao/Acta Scientiae Circumstantiae | Year: 2017

Based on monitoring data of 12 stations, air pollution characteristics, including air quality level, seasonal variation and regional distribution of major air pollutants in Langfang were investigated. Although air quality was improved in 2014 when compared with 2013, air pollutant concentrations remained substantially higher than the national standard in all 12 monitoring stations. PM2.5 was the major pollutant in autumn, winter, and spring, while in summer the maximum daily 8-hour average concentration levels of O3 were frequently higher than the national standard. For simulating air quality in Langfang City and further formulating air quality control policies, emission inventory of major air pollutants was developed based on the outcome of pollution sources survey and environmental statistical data analysis. Production and supply of electric and thermal power and iron and steel production and pressing industries were the two major industrial sources for SO2, NOx and PM2.5, while manufacture of raw chemical materials and chemical products, iron and steel production and pressing industries as well as food manufacturing contributed significantly to VOCs emissions. Dust from road and construction sites contributed 38.6% to total emission of PM2.5. However, dust control was ineffective in practice. It was also noted that the yellow-label cars still accounted for a great share of total traffic emission. Effective controls were urgently needed on those major emission sources to improve the air quality of Langfang City. © 2017, Science Press. All right reserved.

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