北京市传统春节假期空气质量特征研究

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Abstract This study investigated the influence of fireworks on air quality by using the concentrations of major pollutants and PM_2.5 components and meteorological conditions during the Spring Festival in Beijing from 2013 to 2020. The results suggest that air quality improved significantly due to strict control on fireworks since 2018. In particular, 87.5% (seven days) of the days during the 2019 Spring Festival achieved the good and excellent air quality standards, and no heavy polluted days occurred. The maximum PM_2.5 concentration during the New Year’s eve decreased sharply in recent three years, falling by 61.1%, 74.7% and 71.4%, respectively, compared to the highest concentration of 699μg/m³ in 2016. Besides, the sudden increase rates of SO₂, PM₁₀and PM_2.5 concentrations were reduced from 1.31, 1.37 and 0.92 in 2013 to 0.08, 0.14 and 0.02 in 2020. Further, the concentration of primary ion components from fireworks to PM_2.5 decreased significantly thus confirming the reduction in impact of fireworks on air quality in recent years. During the Spring Festival in 2020, adverse meteorological conditions prohibited fireworks pollution dispersion, and aggravated the local pollution accumulation and regional transport, resulting in three-day heavy pollution event. Therefore, the strict control of fireworks, optimal meteorological conditions, and low levels of pollution in the surrounding area are crucial to the air quality in Beijing during the Spring Festival.

Key words： the Spring Festival fireworks meteorological condition regional transport of pollutants PM_2.5

Received: 09 June 2020

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X513

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	Articles by authors
	ZHANG Zhang
	LIU Bao-xian
	AN Xin-xin
	DONG Xin
	WANG Qin
	YAO Huan
	SUN Rui-wen
	LI Yun-ting

Cite this article:

ZHANG Zhang,LIU Bao-xian,AN Xin-xin等. A study on the air quality in Beijing during the Spring Festival[J]. CHINA ENVIRONMENTAL SCIENCECE, 2021, 41(1): 102-113.

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http://www.zghjkx.com.cn/EN/ OR http://www.zghjkx.com.cn/EN/Y2021/V41/I1/102

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