二氧化氮
3.The NO2 concentration in Guangzhou, Beijing and Shanghai was comparatively fairly high.
4.The Development of a Monitor for UDMH and Nitrogen Dioxide of High Concentration in Air
5.The concentrations of nitrogen dioxide and ozone also exceed the objectives for a few days in a year.
6.The development and application of a real-time instrument for the monitoring of unsymmetrical-dimethyl hydrazine (UDMH) and nitrogen dioxide of high concentration in the air are introduced.
7.In 2001, the annual average of NO2 concentration in the air of 341 cities attained the Grade II national standards for air quality.
8.Its coal-burning kilns spew out huge quantities of sooty waste and chemical compounds such as sulfur dioxide and nitrogen dioxide.
9.Thermal desorption behavior of NO over CeO 2 has been investigated by means of MS. The TPD profile suggests that two NO adsorption states may exist over CeO 2 surface. The NO adsorption species undergoes extensive decomposition to form N 2, N 2O and O 2. The desorption peak at lower temperature was assigned to desorption of species (C).
