Grosvenor Place, which runs alongside the palace, has almost four times the maximum permissible amount of nitrogen dioxide.
By growing any of the class of crops called Legumes we may add to the soil not only humus but also nitrogen.
Where there is an abundance of humus in the soil there is likely also to be an abundance of nitrogen.
When mixed with the soil it ferments, and the nitrogen it contains is converted into ammonia.
These ingredients are nitrogen, phosphoric acid, and potash.
In the preparation of nitrogen from the air, how would hydrogen do as a substance for the removal of the oxygen?
The second form in which nitrogen is present in soil is as ammonia.
We therefore find oxygen, nitrogen, water vapour, and carbon dioxide remaining as permanent components of our air.
The most important compound of nitrogen for the plant is nitric acid.
We have seen that a pure grade of dried blood contains about 13 per cent of nitrogen.
1794, from French nitrogène, coined 1790 by French chemist Jean Antoine Chaptal (1756-1832), from comb. form of Greek nitron "sodium carbonate" (see nitro-) + French gène "producing," from Greek -gen "giving birth to" (see -gen). The gas was identified in part by analysis of nitre. Earlier name (1772) was mephitic air, and Lavoisier called it azote (see azo-).
nitrogen ni·tro·gen (nī'trə-jən)
A nonmetallic element that constitutes nearly four fifths of the air by volume, occurring as a colorless, odorless, almost inert diatomic gas, N2, in various minerals and in all proteins. Atomic number 7; atomic weight 14.0067; melting point -210.00°C; boiling point -195.8°C; valence 3, 5.
A nonmetallic element that makes up about 78 percent of the atmosphere by volume, occurring as a colorless, odorless gas. It is a component of all proteins, making it essential for life, and it is also found in various minerals. Nitrogen is used to make ammonia, nitric acid, TNT, and fertilizers. Atomic number 7; atomic weight 14.0067; melting point -209.86°C; boiling point -195.8°C; valence 3, 5. See Periodic Table. See Note at oxygen.