2016年9月30日至10月2日,北京及周边华北各地霾情再起,多地发出空气质量黄色预警。矮马预报提前预报了本次污染时段的发生(详情请见wuranyubao.com.cn和aimayubao.com)。矮马预报预测北京的本轮霾情将在10月3日午后开始缓解。
针对2016年秋的首次霾至,10月2日各大媒体争相发布新闻,全都冠以醒目标题“环保部:PM10超往年同期五倍以上 扬尘控制不到位”,并在疑似通稿中称“从污染物组分来看,PM10浓度高于往年同期五倍以上,说明各地量大面广的施工场地管理混乱无序,扬尘控制措施不到位。”
首先需要指出的是,本轮污染的首要污染物是PM2.5,而不是PM10。其次检视9月30日至10月2日北京所有国控站点的PM2.5和PM10的实时观测数据,我们不难发现PM2.5和PM10的比例全部都在90%左右。这么高的PM2.5占比,只能说明一个问题,即这次污染是一个典型的二次污染过程。所谓二次污染过程,是指空气中检测到的PM2.5高浓度并不是因为直接排放所致(环保部 所指认的罪魁扬尘就是直接排放),而主要是由排放到大气中的气态污染物,比如氮氧化物,挥发性有机物,二氧化硫、氨气等,在一定的气象和环境条件下相互间发生复杂的化学反应转化生成细颗粒物所致。
Thanks to my father who told me on the topic of this blog, this website is genuinely amazing.
Feel free to surf to my homepage: Lahore call girls
This design is incredible! You obviously know how to keep a reader amused.
Between your wit and your videos, I was almost moved to start my own blog
(well, almost…HaHa!) Wonderful job. I really enjoyed what you had to say, and more than that, how you presented it.
Too cool!
Feel free to visit my blog: https://www.cucumber7.com/
दरअसल कॉमर्स विषय की परीक्षा 30 सितंबर के
बाद होनी है.
You actually make it seem so easy with your presentation however I
in finding this matter to be really one thing which I believe I might by
no means understand. It sort of feels too complicated and extremely broad for me.
I am having a look ahead for your subsequent post, I will try to get the
hold of it!
Feel free to visit my web site … Internet Marketing
(https://Surveoo-Review-Best-Paid-Website.Ck.Page/36E49D1482)
Great post. I was checking constantly this weblog and I am impressed!
Extremely helpful information particularly the ultimate phase I maintain such information much.
I used to be looking for this particular information for a long time.
Thanks and best of luck.
my webpage – home Moms play [Hotnews.lv]