Related Experiment Video
Updated: Dec 12, 2025

Detection of 3-Nitrotyrosine in Atmospheric Environments via a High-performance Liquid Chromatography-electrochemical Detector System
Published on: January 30, 2019
Reactivity of aromatic contaminants towards nitrate radical in tropospheric gas and aqueous phase
Bo Wei1, Jianfei Sun1, Qiong Mei1
1Environment Research Institute, Shandong University, Qingdao, 266237, PR China.
Abstract:
Aromatic compounds (ACs) give a substantial contribution to the anthropogenic emissions of volatile organic compounds. Nitrate radicals (NO3) are significant oxidants in the lower troposphere during nighttime, with concentrations of (2-20) × 108 molecules cm-3. In this study, the tropospheric gas and liquid phase reactions of ACs with nitrate radical are investigated using theoretical computational methods, which can give a deep insight into the reaction mechanisms and kinetics. Results show that the reactivity of ACs with nitrate radicals decreases as the electron donating characteristics of the functional group on the ACs decrease, as ΔG≠ of the reaction with NO3 increasing from -1.17 to 17.84 kcal mol-1. The reaction of NO3 towards ACs in the aqueous phase is more preferable, with the atmospheric lifetime 0.07-1281 min. An assessment of the aquatic toxicity of ACs and their degradation products indicated that the risk of their degradation products remains and should be given more attention.
More Related Videos
Related Concept Videos
Electrophilic Aromatic Substitution: Nitration of Benzene
meta-Directing Deactivators: –NO2, –CN, –CHO, –⁠CO2R, –COR, –CO2H
Radical Reactivity: Nucleophilic Radicals
1° Amines to Diazonium or Aryldiazonium Salts: Diazotization with NaNO2 Overview
The nitrous acid is unstable. Hence, it is formed in situ from a solution of sodium nitrite and cold aqueous acids such as hydrochloric or sulfuric acid. In an acidic solution, the –OH group of nitrous acid undergoes protonation to give oxonium ion, followed by...
Radical Reactivity: Concentration Effects
ortho–para-Directing Activators: –CH3, –OH, –⁠NH2, –OCH3

