| 沧州市大气污染特征观测研究 |
| 摘要点击 2303 全文点击 1135 投稿时间：2012-01-09 修订日期：2012-03-13 |
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| 中文关键词 沧州 大气污染物 NOx O3 SO2 PM10 |
| 英文关键词 Cangzhou atmospheric pollutants NOx O3 SO2 PM10 |
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| 中文摘要 |
| 利用沧州2009年7月~2011年7月的NOx (NOx=NO+NO2)、O3、SO2以及PM10的观测数据,分析了沧州市大气污染物的日变化、月平均变化、年变化以及季节平均变化特征. 结果表明, NOx、PM10日变化为双峰型,O3为单峰. SO2日变化也呈现为双峰型,但是其变化幅度较平缓. NO、NO2、NOx、SO2有较相同的季节变化趋势. NO、NO2 、NOx、SO2及PM10冬季值最大,分别为(30.0±18.9) μg·m-3、(50.5±19.8) μg·m-3、(80.5±38.7) μg·m-3、(62.1±34.7) μg·m-3、(201.6±98.5) μg·m-3. 臭氧夏季浓度最高,其月均值为(88.0±22.3) μg·m-3. NO、NO2、NOx、O3、SO2及PM10年均值分别为(18.9±14.5) μg·m-3、(37.6±13.0) μg·m-3、(56.5±27.5) μg·m-3、(49.9±16.3) μg·m-3、(31.6±19.5) μg·m-3、(156.7±79.1) μg·m-3. 秋冬季污染物主要为NOx (NOx=NO+NO2)、SO2以及PM10,夏季污染物主要为O3. |
| 英文摘要 |
| 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 NOx(NOx=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 NOx and PM10, and there was a single peak in the diurnal variation of O3. The diurnal variation of SO2 was similar to those of NOx and PM10, however, the variation trend was smoother than those of other pollutants. The seasonal variations of NO, NO2, NOx 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) μg·m-3, (50.5±19.8) μg·m-3, (80.5±38.7) μg·m-3, (62.1±34.7) μg·m-3 and (201.6±98.5) μg·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) μg·m-3. The annual mean values of NO, NO2, NOx, O3, SO2 and PM10were (18.9±14.5) μg·m-3, (37.6±13.0) μg·m-3, (56.5±27.5) μg·m-3, (49.9±16.3) μg·m-3,(31.6±19.5) μg·m-3and (156.7±79.1) μg· m-3, respectively. The dominant pollutants differed in different seasons. NOx (NOx=NO+NO2), SO2and PM10were the most important pollutants in autumn and winter, while O3was the main pollutant in summer. |
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