nitrogen chemistry

基本解释

The chemistry of the soil-the presence in it of phosphorus, nitrogen and so on-is being degraded.
该土壤中磷，氮等化学物质的含量也在减少。
An aryl-replaced nitrogen heterocyclic compound preparation method belongs to the technical field of organic compound catalytic chemistry.
一种芳基取代的氮杂环化合物的制备方法，其属于有机化合物催化化学技术领域。
ip.com
There are many ways such as physics, chemistry, ion exchange, man-made wet land and biology etc. wastewater nitrogen removal. The biological way is used widely now.
近年来污水脱氮主要有以下几种基本方法：物理法、化学法、离子交换法、人工湿地法及生物法，生物法是目前应用最广泛的方法。

The fact that people have used industrial chemistry to short-circuit the nitrogen cycle, by making fertilisers out of nitrogen in the air at a rate which greatly exceeds what natural systems can manage, has real environmental effects.
ECONOMIST: The global environment