Beijing, PM2.5 low monitor display on new year's Eve last year, severe pollution concentration Fireworks _ | | | news

The Beijing News (by Deng Qi) yesterday's new year's Eve, because less Fireworks and firecrackers set off, up to 0 o'clock in the morning, PM2.5 did not appear "blast form", on the contrary, the city's rush-hour concentrations far below last year.

On new year's Eve last year, the air quality is good

Municipal environmental protection monitoring center data show that up to 0 o'clock in the morning, the city's highest concentration PM2.5 hour station for the West side wanshouxigong, 246 μg/m, reached the high levels of pollution, PM10 hours the highest concentrations was also the site, 424 μg/m, up heavily polluted, it is the worst air quality levels.

From 18 o'clock yesterday, between the average PM2.5 concentrations of 140-160 μg/m, for mild to moderate pollution levels far lower than last year.

Starting at 16 o'clock PM2.5 concentrations gradually increased

Yesterday, the municipal environmental protection monitoring center publishing platform data shows that from 16 o'clock, the PM2.5 concentrations gradually increased.

20 o'clock yesterday, level to moderate to high levels of pollution in the city, in which six moderate pollution, pollution levels in the Southwest. Among the 21 o'clock to, the city's air quality has not changed much. At 23 o'clock, six areas of real-time PM2.5 concentrations of 162 μg/m3, as moderate pollution levels. Municipal environmental protection monitoring center publishing platform in real time display, 35 sites are primary pollutants for PM2.5, between most of which site is good to slightly polluted level, part of the site for contamination, Yufa polluting Liulihe in the South and West.

Overall, the city's air quality from 16 o'clock began to slip back around 20 o'clock start, the city is in the moderate to high levels of pollution level, there is no big ups and downs.

At 1 o'clock in the morning, midnight fireworks set off an hour peak pollution, concentrations varied between sites. Among them, six regional PM2.5 concentrations in real time for the city to 451 mg/m; Northeastern 544; 458 in the Southwest, are serious pollution levels.

Municipal Meteorological Bureau, said today's unfavourable dispersion conditions, Fireworks index for class 3, that is unfit for discharge. Highly inappropriate for the second day of the first lunar month to discharge. Second day back, only the weather situation in the evening respectively suitable for Fireworks.

(Original title: PM2.5 low last year)

(Edit: SN035)
January 31, 2014 The Beijing News
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监测显示除夕北京PM2.5远低去年|重度污染|浓度|烟花_新闻资讯

　　新京报讯 (记者邓琦)昨日除夕夜，因为烟花爆竹燃放量较少，截至今晨零时，PM2.5没有出现“爆表”的情况，反之，全市高峰小时浓度远低于去年。

　　除夕夜空气质量好于去年

　　市环保监测中心数据显示，截至今晨零时，全市PM2.5小时浓度最高站为西城万寿西宫，为246微克/立方米，达到了重度污染，PM10小时浓度最高也是该站点，为424微克/立方米，达到严重污染，这是空气质量最差级别。

　　昨日18时至今晨零时，PM2.5平均浓度为140-160微克/立方米之间，为轻度至中度污染水平，远低于去年。

　　16时开始PM2.5浓度逐渐升高

　　昨日，市环保监测中心实时发布平台数据显示，从16时开始，PM2.5的浓度逐渐升高。

　　昨日20时，全市转为中度至重度污染水平，其中，城六区为中度污染，西南部为重度污染水平。21时至22时之间，全市的空气质量没有太大变化。23时，城六区的PM2.5实时浓度为162微克/立方米，为中度污染水平。在市环保监测中心实时发布平台显示，35个站点的首要污染物均为PM2.5，其中绝大部分站点处于良好至轻度污染水平之间，部分站点为中度污染，西南部的琉璃河和榆垡为重度污染。

　　总体而言，全市空气质量从16时往后开始转差，约20时开始，全市处于中度至重度污染水平，没有太大起伏。

　　今晨1时，零时烟花爆竹燃放使得上一小时污染达到峰值，站点之间浓度差异较大。其中，城六区PM2.5实时浓度为451微克/立方米；东北部为544；西南部为458，均为严重污染水平。

　　市气象局表示，今天的污染物扩散条件不利，烟花燃放指数为3级，即不适宜燃放。正月初二为极不适宜燃放。初二往后，只有初五的天气形势比较适宜燃放烟花。

(原标题：PM2.5远低去年)

（编辑：SN035）
2014年01月31日03:19
新京报
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