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nitrogen rule

氮规则

②氮规则（Nitrogen Rule）凡不含有氮或偶数氮原子的分子，其分子量一定是偶数，而含奇数个氮原子的分子，其分子量必为奇数。这个规则称为氮规则。

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氮规律

... 纪律性, 纪律观念 sense of discipline 氮规律 nitrogen rule 规律的 disciplinariandisciplinary; regular ...

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化学

氮规则 - 引用次数：1
参考来源 - 官能团对染料在电喷雾串联质谱中的离子化和裂解行为的影响 Effects of Functional Groups on Ionization and Fragmentation of Dyestuffs by ESI

氮法则

·2,447,543篇论文数据，部分数据来源于NoteExpress

abstract: The nitrogen rule states that organic compounds containing exclusively hydrogen, carbon, nitrogen, oxygen, silicon, phosphorus, sulfur, and the halogens either have 1) an odd nominal mass that indicates an odd number of nitrogen atoms are present or 2) an even nominal mass that indicates an even number of nitrogen atoms are present in the molecular ion. The nitrogen rule is not a rule, per se, as much as a general principle which may prove useful when attempting to solve organic mass spectrometry structures.

以上来源于: WordNet

According to EPA, the levels of sulfur dioxide and nitrogen oxide would have been cut in half under the cross-state rule.

FORBES: Winning the Presidency: Banking Clean Air or Bucking EPA?
Originally scheduled to go into effect on January 1st, the rule would have required 27 upwind states to dramatically reduce sulfur dioxide and nitrogen oxide emissions by 2014.

FORBES: Court Curbs On EPA Offer A Breath Of Fresh Air For Recovery
The new rule required about half the states to reduce their emissions of sulphur dioxide, nitrogen oxide and other emissions based on projections of how many pollutants were crossing state lines, and told them how to do it.

ECONOMIST: Air pollution

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