珠三角春节期间PM<sub>2.5</sub>及水溶性离子成分的变化——以2012年为例

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Abstract Particulate matter (PM) and relevant water-soluble ions were analyzed based on the hourly Marga data from China Meteorological Agency Panyu Atmospheric Components Station during Spring Festival of 2012 in PRD.During fireworks burning period, mass concentrations of PM₁₀, PM_2.5 and all water-soluble ions increased rapidly, indicating an occurrence of air pollution. The ratio of PM_2.5 to PM₁₀ (PM_2.5/PM₁₀) showed a decreasing trend,and thus the increase in PM₁₀ caused by the pollution was more significant than that of PM_2.5; however, the average value of PM_2.5/PM₁₀ is 0.92, indicating PM_2.5 was the absolutely dominant component of PM. The influence of fireworks burning on the concentration of K⁺, Cl^- and SO₄²^- was more significant than on that of NO₃^- and NH₄⁺. The correlation analysis suggested that the increase of K⁺, Cl^-, Mg₂⁺ and Na⁺ resulted from the firework burning and SO₄²^-, NO₃^-和NH₄⁺ was probably from the same source. Finally, firework burning has also contributed to the increase of black carbon.

Key words： PRD Spring Festival PM_2.5 water soluble ions

Received: 29 February 2016

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	MA Ying
	WU Dui
	LIU jian

Cite this article:

MA Ying,WU Dui,LIU jian. The characteristics of PM_2.5 and its water soluble ions during Spring Festival in PRD in 2012[J]. CHINA ENVIRONMENTAL SCIENCECE, 2016, 36(10): 2890-2895.

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http://www.zghjkx.com.cn/EN/ OR http://www.zghjkx.com.cn/EN/Y2016/V36/I10/2890

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