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Huan Jing Ke Xue. 2002 Jul;23(4):33-6.

[Effects on fine particles by the continued high temperature weather in Beijing].

[Article in Chinese]

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State Key Joint Laboratory of Environmental Simulation and Pollution Control, Center for Environmental Sciences, Peking University, Beijing 100871.


The continued high temperature weather (CHTW) appeared in Beijing since June 23 1999. The measurements showed the PM2.5 mass concentrations were 2 to 3 times of that in non-CHTW period. However the diffusion conditions were still fine in these days. Both the highest hourly concentrations of O3 and the SO4(2-) composition in PM2.5 can identify that the photochemical action was very active. It is the very reason to produce more fine particles in atmosphere.

[Indexed for MEDLINE]

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