Shanghai entered a period of high incidence of ozone pollution 6 pollution this month | day | Shanghai ozone _ news
Original title: entering periods of high ozone pollution 6 pollution this month
Morning news reporter Yu Wenyan reports according to the monitoring of the municipal environment monitoring center May as of now, there are already 7 pollution days, 6 of which primary pollutants are ozone pollution day. Why are there under a blue sky and white clouds ozone pollution? Experts say that is because when the blue sky and white clouds, sunny, exhaust of nitrogen oxide, industrial process emissions, such as volatile organic compounds react in sunlight and photochemical pollution.
Reporters May 1 to 18th air quality in real-time systems. Found pollution May already have 7 day 1 moderate pollution. Primary pollutants, except 1 day for PM10, ozone-rest for 6 days. On May 11 as a moderately polluted, primary pollutant is O3, is 163 mg/m.
Look carefully will find that ozone pollution often occurs in the afternoon, two or three peaks to PM2.5 pollution is mainly in the morning.
Experts said that Shanghai is gradually into periods of high ozone pollution. Ozone pollution the vast majority concentrated in the 7-8 months. Environmental monitoring Department has monitored ozone concentrations up to 400 mg/m, is the standard more than twice times.
Concentration of motor vehicles in the Center, as well as the concentration of chemical enterprises in the suburbs would be more serious. Experts said the ozone standard, the people need not be too nervous, exposed to excessive ozone environment it's okay for a short time. There is a "ozone 8-hour" indicator, meaning continuous 8 hour average ozone, only 8 hours continuously at high concentration ozone environment, would bring certain effects to the human body.
Responsible editor: Kun Qu SN117
Article keywords:Shanghai ozone
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上海进入臭氧污染高发期 本月已有6个污染日|上海|臭氧_新闻资讯
原标题：进入臭氧污染高发期 本月已有6个污染日
晨报记者郁文艳报道 根据市环境监测中心的监测，5月截至目前，已经有7个污染日，其中6个污染日的首要污染物为臭氧。为何蓝天白云之下会有臭氧污染？专家表示，那是因为蓝天白云、阳光明媚之时，机动车尾气中的氮氧化物、工业工艺排放的挥发性有机物等在阳光照射下会发生化学反应，产生光化学污染。
记者查询了5月1日至18日的空气质量实时发布系统。发现5月已经有7个污染日，其中1个为中度污染。在首要污染物中，除了1天为PM10外，其余6天均为臭氧。比如5月11日为中度污染，首要污染物为O3，浓度为163微克/立方米。
再仔细观察会发现，臭氧污染往往出现在下午，两三点达到高峰，上午则以PM2.5污染为主。
专家表示，申城即将逐渐进入臭氧污染高发期。臭氧污染绝大部分集中在7-8月。环境监测部门曾监测到臭氧浓度达到400微克/立方米，是标准的2倍之多。
中心城区机动车集中的地方，以及郊区化工等企业集中的地方会较为严重。专家表示，对于臭氧超标，市民也不必太紧张，短时间暴露在超标的臭氧环境下没关系。有一个“臭氧8小时”指标，意思就是说连续不断8小时臭氧的平均值，只有8个小时连续不断地处于高浓度臭氧环境中，才会对人体带来一定的影响。
责任编辑：瞿崑 SN117
文章关键词： 上海 臭氧
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