nitrogen chemistry

基本解释

The chemistry of the soil-the presence in it of phosphorus, nitrogen and so on-is being degraded.
該土壤中磷，氮等化學物質的含量也在減少。
An aryl-replaced nitrogen heterocyclic compound preparation method belongs to the technical field of organic compound catalytic chemistry.
一種芳基取代的氮襍環化郃物的制備方法，其屬於有機化郃物催化化學技術領域。
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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.
近年來汙水脫氮主要有以下幾種基本方法：物理法、化學法、離子交換法、人工溼地法及生物法，生物法是目前應用最廣泛的方法。

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