郑州市西郊臭氧浓度变化特征分析

发布时间：2018-01-27 16:49

本文关键词： 臭氧郑州变化特征单峰变化光化学反应　出处：《生态环境学报》2016年11期 　论文类型：期刊论文

【摘要】：臭氧(O_3)是大气中的微量组分,对流层中大部分臭氧是NO_x(氮氧化物)和HC(碳氢化合物)经光化学反应生成的二次污染物,是城市光化学烟雾的主要成分。近年来郑州市区域性的O_3污染越来越严重。利用2014年6月—2015年5月郑州市西郊环境监测站点大气污染物的小时浓度资料,结合相应气象要素资料分析郑州市西郊O_3污染变化特征及其影响因素,为郑州市空气污染治理提供基础资料。郑州市2014、2015年首要大气污染物以大气颗粒物(特别是细颗粒物)为主,约占80%~90%左右,2015年颗粒物污染有一定程度的下降,但臭氧污染和NO_2污染被凸显出来,臭氧污染天数急剧增加。郑州环境监测站O_3日逐时变化为典型的单峰型,O_3在8:00出现最小值33.08μg?m~(-3),在15:00出现最大值84.02μg?m~(-3)。不同季节对O_3逐时浓度的变化影响很大,春夏两季,O_3在15:00左右出现较大的最高值;而在秋冬两季,O_3虽然也会在15:00—16:00达到较高值,但其数值较小。按季节统计,郑州市环境监测站O_3浓度的季节平均值排序为:夏(72.60μg?m~(-3))春(63.12μg?m~(-3))冬(41.06μg?m~(-3))秋(38.99μg?m~(-3))。臭氧污染主要发生在光化学反应强烈的条件下,天气条件对臭氧浓度的影响较大,紫外线较强的晴天、温度较高时臭氧浓度较高,容易发生臭氧污染,而在出现雨雪天气、阴天和灰霾天气时臭氧浓度较低。
[Abstract]:Ozone O _ 3) is a trace component of the atmosphere, and most of the ozone in the troposphere is a secondary pollutant produced by photochemical reactions between no _ x (no _ x) and HC1 (hydrocarbons). It is the main component of photochemical smog in the city. In recent years, the pollution of OST3 in Zhengzhou has become more and more serious. Using the environmental monitoring station of the west suburb of Zhengzhou from June 2014 to May 2015, the air pollutant is small. Time concentration data. Based on the data of meteorological elements, the variation characteristics of O _ 3 pollution in west suburb of Zhengzhou and its influencing factors are analyzed, which provides the basic data for air pollution control in Zhengzhou City in 2014. In 2015, the primary atmospheric pollutants were mainly atmospheric particulates (especially fine particles), accounting for about 90% of the atmospheric particulates. In 2015, the particulate pollution decreased to a certain extent. However, ozone pollution and NO_2 pollution were highlighted, ozone pollution days increased dramatically. O _ 3 has a minimum value of 33.08 渭 g at 8:00? The maximum value of 84.02 渭 g? Different seasons have a great influence on the hourly concentration of O _ 3, and the maximum value of O _ (3) is about 15:00 in spring and summer. In autumn and winter, though the value will reach a higher value between 15: 00 and 16: 00, it will be smaller by season. The seasonal average value of O _ 3 concentration in Zhengzhou Environmental Monitoring Station is 72.60 渭 g? (3) 63.12 渭 g? In winter, 41.06 渭 g? (3) 38.99 渭 g? Ozone pollution mainly occurs in the condition of strong photochemical reaction. The weather condition has a great influence on ozone concentration, and the ozone concentration is higher when the ultraviolet light is strong and the temperature is higher. Ozone pollution is prone to low ozone concentrations in rainy, snowy, cloudy and haze weather.
【作者单位】：中原工学院;华北水利水电大学;
【基金】：国家自然科学基金项目(41375145)
【分类号】：X515
【正文快照】： 引用格式:杨书申,宋晓焱,彭竹琴,郑明凯.2016.郑州市西郊臭氧浓度变化特征分析[J].生态环境学报,25(11):1748-1754.YANG Shushen,SONG Xiaoyan,PENG Zhuqin,ZHENG Mingkai.2016.Feature analysis of the variation of ozone concentrationover the western suburb of Zhengzho

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