Wang Yong-Hong, Hu Bo, Wang Yue-Si, Liu Wei, Zhang Wu
Key Laboratory for Semi-Arid Climate Change of the Ministry of Education, College of Atmospheric Science, Lanzhou University, Lanzhou 730000, China.
Huan Jing Ke Xue. 2012 Nov;33(11):3705-11.
The variation characteristics of air pollution in Cangzhou are analyzed base on measurements from July 2009 to July 2011 in Cangzhou Normal College. Measurement data of NO(x) (NO(x) = NO + NO2), O3, SO2 and PM10 was used to analyze diurnal, monthly variation and annual variation characteristics of air pollutants in Cangzhou city. The results indicated that there were two peak values in the diurnal variation of NO, and PM10, and there was a single peak in the diurnal variation of O3. The diurnal variation of SO2 was similar to those of NO(x) and PM10, however, the variation trend was smoother than those of other pollutants. The seasonal variations of NO, NO2, NO(x) were the same as that of SO2, with the maximum values of these pollutants appearing in Winter, and the concentrations of NO, NO2, SO2 and PM10 were (30.0 +/- 18.9) microg x m(-3), (50.5 +/- 19.8) microg x m(-3), (80.5 +/- 38.7) microg x m(-3), (62.1 +/- 34.7) microg x m(-3) and (201.6 +/- 98.5) microg x m(-3), respectively. The seasonal variation of O3 was different from those of other pollutants, and the maximum concentration appeared in summer with the value of (44.9 +/- 11.4) microg x m(-3). The annual mean values of NO, NO2, NO(x), O3, SO2 and PM10 were (18.9 +/- 14.5) microg x m(-3), (37.6 +/- 13.0) microg x m(-3), (56.5 +/- 27.5) microg x m(-3), (49.9 +/- 16.3) microg x m(-3), (31.6 +/- 19.5) microg x m(-3) and (156.7 +/- 79.1) microg x m(-3), respectively. The dominant pollutants differed in different seasons. NO(x) (NO(x) = NO + NO2), SO2 and PM10 were the most important pollutants in autumn and winter, while O3 was the main pollutant in summer.
基于2009年7月至2011年7月在沧州师范学院的测量数据，分析了沧州市空气污染的变化特征。利用氮氧化物（氮氧化物=一氧化氮+二氧化氮）、臭氧、二氧化硫和可吸入颗粒物（PM10）的测量数据，分析了沧州市空气污染物的日变化、月变化和年变化特征。结果表明，一氧化氮和可吸入颗粒物的日变化有两个峰值，臭氧的日变化有一个峰值。二氧化硫的日变化与氮氧化物和可吸入颗粒物的相似，然而，其变化趋势比其他污染物的更平缓。一氧化氮、二氧化氮、氮氧化物的季节变化与二氧化硫的相同，这些污染物的最大值出现在冬季，一氧化氮、二氧化氮、二氧化硫和可吸入颗粒物的浓度分别为（30.0±18.9）微克/立方米、（50.5±19.8）微克/立方米、（80.5±38.7）微克/立方米、（62.1±34.7）微克/立方米和（201.6±98.5）微克/立方米。臭氧的季节变化与其他污染物的不同，其最大浓度出现在夏季，值为（44.9±11.4）微克/立方米。一氧化氮、二氧化氮、氮氧化物、臭氧、二氧化硫和可吸入颗粒物的年均值分别为（18.9±14.5）微克/立方米、（37.6±13.0）微克/立方米、（56.5±27.5）微克/立方米、（!49.9±16.3）微克/立方米、（31.6±19.5）微克/立方米和（156.7±79.1）微克/立方米。不同季节的主要污染物不同。氮氧化物（氮氧化物=一氧化氮+二氧化氮）、二氧化硫和可吸入颗粒物是秋冬季节最重要的污染物，而臭氧是夏季的主要污染物。
