In order to reveal spatial distribution and source characteristics deeply, based on traditional comparison with air pollutants concentration of stations in air monitoring net, combined with 24 hours diurnal variation trend, six conventional pollutants(CO、SO2、NO2、O3、PM10、PM2.5) at 59 monitoring sites in Pearl River Delta during 2013~2015 were analysed. The results showed that CO, SO2, NO2, PM10, PM2.5 mainly concentrated in the northwest and middle region of PRD, especially in Guangzhou and Foshan, mainly derived from local source. O3 pollution distribution was more complex, which was lower in middle region, but diurnal variation range was big in Guangzhou and Dongguan, which showed that the middle region was influenced by local source at some degree. The Pearl River Delta had obvious regional characteristics of air pollution. Tian Hu and Tang Jia were recommended as regional monitoring sites to represent influence of transmission from north and average pollution level of southeast in PRD.
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ZHUANG Xin, HUANG Xiao-feng, CHEN Duo-hong, SHEN Jin, HE Ling-yan. Studies on spatial distribution of air pollution in Pearl River Delta based on diurnal variation characteristics. CHINA ENVIRONMENTAL SCIENCECE, 2017, 37(6): 2001-2006.
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