三级aa视频在线观看-三级国产-三级国产精品一区二区-三级国产三级在线-三级国产在线

US EUROPE AFRICA ASIA 中文
Business / Green China

Nitrogen oxide key to battling smog

By He Yini (chinadaily.com.cn) Updated: 2014-04-14 10:47

Nitrogen oxide key to battling smog

Moter vehicles are seen lining up along the second ring road in Beijing, March 27, 2014. Mobile sources of nitrogen oxide, including cars, ships and trains, are difficult to control due to their strong mobility, and has become a blind spot in curbing air pollution. [Photo by Wang Yueling / Asianewsphoto] 

Nitrogen oxide, more than other major pollutants such as sulfur dioxide or ammonia nitrogent, should be considered as the major culprit for smog, said Wang Yuqing, deputy head of Committee of Population, Resources and Environment of China.

Nitrogen oxide key to battling smog

Nitrogen oxide key to battling smog

"As much as 80 percent of smog that has been plaguing most of the cities are secondary pollutants, including sulfate and nitrate - fine articles that are really toxic and a threat to human health," he said during a keynote speech at an international consultative conference on NOx emission management and control, which was held on March 29 in Beijing.

The meeting was co-sponsored by International Energy Conservation Environmental Protections Association, or IEEPA, a non-governmental organization dedicated to help push forward China's green transformation.

According to Wang, these pollutants are actually transformed from sulfur dioxide and ammonia nitrogen after undergoing a series of chemical reactions, a process remarkably catalyzed by nitrogen oxide, or NOx.

NOx is one of the key airborne pollutants and main cause of acid rain that comes mainly from coal consumption and emissions of motor vehicles, he added.

Air pollution has increasingly become a major concern among Chinese people, as much of the country was time and again shrouded by the blanket of smog this year and last year, with Beijing and Hebei province bearing the brunt.

Statistics show that nitrogen oxide emissions had been growing at an annual rate of 5 to 8 percent in the past few years, but then dropped slightly as of 2012 when NOx emissions stood at about 23.4 million tons, still 30 percent more than five years earlier.

Nitrogen oxide key to battling smog
Smoggy memories
Nitrogen oxide key to battling smog
Top 10 products minting most from smog

Previous Page 1 2 Next Page

Hot Topics

Editor's Picks
...
主站蜘蛛池模板: 亚洲午夜精品国产电影在线观看 | 中国一级特黄真人毛片免费看 | 美女动作一级毛片 | 亚洲国产精品a一区 | 亚洲在线久久 | 久操色| 国产一区二区精品在线观看 | 久久精品国产一区二区三区 | 女同另类一区二区三区 | 中文字幕在线播放一区 | 午夜成年女人毛片免费观看 | 好男人在线影院www 好看的一级毛片 | 国产精品超清大白屁股 | 国产色图视频 | 六月丁香激情综合成人 | 青青青国产免费手机视频在线观看 | 天天套图 | 国产乱人伦偷精品视频不卡 | 色婷婷亚洲综合五月 | 久久色国产 | 日韩一级二级三级 | 精品福利国产 | 免费看成人国产一区二区三区 | 亚洲国产精品线观看不卡 | 国产91精选在线观看麻豆 | 亚洲艹| 可以免费观看一级毛片黄a 可以免费观看欧美一级毛片 | 国产精品成人免费福利 | 国产日韩欧美在线一二三四 | 亚洲国产成人精品女人久久久 | 久久国产中文字幕 | 久久99视频精品 | 国产在热线精品视频国产一二 | 国产自产v一区二区三区c | 久久久亚洲国产精品主播 | 一区二区三区在线看 | 国产黄色视屏 | 涩涩国产精品福利在线观看 | 韩国一级特黄清高免费大片 | 国产a一级毛片含羞草传媒 国产a三级三级三级 | 国产三级香港在线观看 |