an unstable inorganic acid known only in solution and as nitrite salts

results showed that the former afforded an yield over 80% and the regioselectivity (p/o ratio) up to 5.4, both were higher than that using nitrous acid as nitrating agent.

结果表明：以硝酸铜作硝化剂时的硝化收率可达80%，p／o比值最高为5.4，均比用相同浓度的硝酸作硝化剂时要高。

nitrosophenols are formed very easily by the action of nitrous acid on phenols.

以亚硝酸作用于酚，很易制得亚硝基酚。

destaillats's team reckon that nnk is produced when nicotine from tobacco smoke reacts with nitrous acid in the air.

hugodestaillates的团队猜想，亚硝胺(nnk)是烟草中的尼古丁和空气中的亚硝酸反应生成的。

tryptophan is oxidized by nitrous acid at elevated temperature produce a phenolic intermediate which further reacts with nitrous acid to form a fluorescent species.

本文首次提出了利用亚硝酸氧化色氨酸的荧光反应测定色氨酸的方法。

muriate acid concentration is 15-20 percent, first select 15 percent, nitrosation solvent is nitrous acid metal salt or nitrous acid ester, and sodium nitrate is first selected.

稀盐酸浓度为15～20％，优选15％；亚硝化试剂为亚硝酸堿金属盐或亚硝酸酯，优选亚硝酸钠；

carbon monoxide and nitrous acid ester are synthesized through coupling reaction into diester carbonate in the presence of catalyst and at relatively low pressure and temperature.

一种碳酸二酯的合成方法，通过一氧化碳和亚硝酸酯在催化剂存在下，用较低的压力和较低的温度偶联合成碳酸二酯。

by treating this precipitate with nitrous acid followed by a recrystallization process, copper(ii) nitrate was recovered in 82.32% yield.

该沉淀经硝酸溶解和浓缩结晶可以得到硝酸铜，其回收率为82.32%（以铜含量为基準）。

the reaction of triphenyltin with nitrous acid in aqueous phase in the presence and absence of o2 was studied by a laser flash photolysis technique.

利用激光闪光光解技术进行了有氧和无氧条件下氯化三苯基锡与亚硝酸水溶液的紫外光解反应研究。

purpose:studies the removal effect on ammonia nitrogen, nitrous acid nitrogen, codmn and turbidity during immobilized nitrobacterias pilot experiment, and provide reference for the actual project.

目的分别研究小试中试条件下固化硝化菌对氨氮的去除效果及相关参数的选择，为实际工程提供参考。

be just nitrous acid because of the inner processing meat products has added a saltpetre, amine in meeting and leben forms sub nitramine , is cancerogen.

因为加工肉制品内添加了硝，也就是亚硝酸，会和酸奶中的胺形成亚硝胺，是致癌物。

this article studies the reactions of nitrous acid with eldest aromatic amine and diazonium salts substituted by halogen, and investigates the condition and mechanism of those reactions.

通过对亚硝酸与伯芳胺反应形成重氮盐，以及重氮盐被卤素取代生成卤代芳烃的反应条件和反应机理的研究。