B的区别etween Organic and Inorganic Nitrogen

Thekey difference有机和无机氮之间organic nitrogen is the nitrogen that occurs in organic compounds whereas the inorganic nitrogen is nitrogen that occurs in inorganic compounds.

Organic compounds are chemical species containing C and H atom as essential components. When these compounds contain nitrogen as well, this nitrogen is organic nitrogen. Inorganic compounds are chemical species that has chemical elements other than carbon and hydrogen. But there can be carbon and hydrogen in inorganic compounds as well. However, it is not essential to have these chemical elements as for organic compounds. Then the nitrogen atoms bound to these compounds are inorganic nitrogen. We use these terms mainly regarding soil chemistry.

内容

1.Overview and Key Difference
2.什么是有机氮
3.What is Inorganic Nitrogen
4.Side by Side Comparison – Organic vs Inorganic Nitrogen in Tabular Form
5.概括

什么是有机氮?

Organic nitrogen is the nitrogen atoms that occur in organic compounds. This form of nitrogen is common in soils. The organic matter in soil includes the residues of decomposing plant and animal matter and humus. These organic fractions contain nitrogen that incorporates into the organic matter during the soil development. Since the organic matter content in soil depends on the long-term moisture contents and temperature trends, the organic nitrogen content in the soil also varies. For example, due to the cultivation, the organic matter content of soil decreases due to increase oxidation of these organic compounds, which leads to reducing the soil organic matter nitrogen for crop uptake. Moreover, the organic nitrogen plays an important role in soil nitrogen cycling and crop production.

In general concept, the term organic nitrogen refers to any organic compound containing nitrogen. For example,amino acids,proteins,nucleotides等等。在另一种方法中，一词有机氮是指水生环境中的氮分数。我们可以将这一部分分为两组，因为真正溶解的有机氮和颗粒有机氮。

What is Inorganic Nitrogen?

Inorganic nitrogen is the nitrogen atoms that occur in inorganic compounds. Unlike organic compounds, inorganic compounds do not contain carbon and hydrogen as essential components. These compounds may or may not contain carbon and hydrogen, and there are many other chemical elements which make up inorganic compounds.

Figure 01: The Nitrogen Cycle shows the Inorganic Nitrogen in the Soil

In soil chemistry, we talk about inorganic nitrogen mainly in thenitrogen cycle。例如，铵（NH）₄⁺）和硝酸盐（否₃^–) predominate in the inorganic fraction of the soil. These are the major form that plants can uptake for their needs. In addition, ammonium occurs in both exchangeable and non-exchangeable forms. The other forms of inorganic nitrogen in soil are nitrogen gas (N₂）和亚硝酸盐（否₂^–).

What is the Difference Between Organic and Inorganic Nitrogen?

Organic nitrogen is the nitrogen atoms that occur in organic compounds. The organic nitrogen includes amino acids, proteins, nucleotides, etc. along with nitrogen bound to residues of decomposing plant and animal matter and humus. Inorganic nitrogen is the nitrogen atoms that occur in inorganic compounds. This category mainly includes ammonium (NH₄⁺), nitrates (NO₃^–), nitrogen gas (N₂）和亚硝酸盐（否₂^–).

概括– Organic vs Inorganic Nitrogen

有机和无机氮形式都出现在环境中。土壤，水生系统和空气。有机氮和无机氮之间的主要区别在于，有机氮是发生在有机化合物中的氮，而无机氮是无机化合物中发生的氮。

Reference:

1. “Soils – Part 5: Nitrogen as a Nutrient.” Plant and Soil Sciences ELibrary.Available here
2. “Nitrogen (Organic vs Inorganic) – Cold War Organics.” Cold War Organics.Available here