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Automated, High-resolution Mobile Collection System for the Nitrogen Isotopic Analysis of NOx
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Evaluation of a high-purity and high-stability continuous generation system for nitrous Acid

A Febo, C Perrino, M Gherardi

    Environmental Science & Technology
    |January 28, 2012
    PubMed
    Abstract

    No abstract available in PubMed .

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    Nitrous acid and nitric acids are two types of acids containing nitrogen, among which nitrous acid is weaker than nitric acid. Nitrous acid with a pKa value of 3.37 ionizes in water to give a nitrite ion and the hydronium ion.
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    Nitrous acid is a relatively weak and unstable acid prepared in situ by the reaction of sodium nitrite and cold, dilute hydrochloric acid. In an acidic solution, the nitrous acid undergoes protonation when it loses water to form a nitrosonium ion—an electrophile. Nitrous acid reacts with primary amines to give diazonium salts. The reaction is called diazotization of primary amines.
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