A platform for research: civil engineering, architecture and urbanism
A platform for research: civil engineering, architecture and urbanism
Elucidation of the last steps of photo-ammonification: analytical method development and mechanism elucidation
The mechanisms underlying the photo-ammonification of nitrogenous organic compounds (NOCs) remain unclear, partly due to the analytical challenges of small NOC intermediates. This study introduced a simple methodology for accurately and simultaneously quantifying multiple small NOCs during ammonification processes. The developed method employed phenyl isothiocyanate as derivatization reagents, followed by high-performance liquid chromatography analysis to measure primary and secondary amines, amides, as well as NH4+ over variable photo-ammonification conditions. In our experimental setup, vacuum ultraviolet (VUV) irradiation serves as the controlled reaction environment to simulate harsh photo-ammonification environment. Representative NOCs, including pyridine, N,N-dimethylformamide, and acrylonitrile, were chosen due to their structural diversity and environmental relevance as model NOCs. This method was able to achieve excellent nitrogen mass balance, and revealed that the last steps of photo-ammonification involved oxidation of nitrogen-adjacent carbon to amide followed by the cleavage of N–C bond. This novel method may also help quantitative investigation of nitrogen transformations in different environmental contexts.
Elucidation of the last steps of photo-ammonification: analytical method development and mechanism elucidation
The mechanisms underlying the photo-ammonification of nitrogenous organic compounds (NOCs) remain unclear, partly due to the analytical challenges of small NOC intermediates. This study introduced a simple methodology for accurately and simultaneously quantifying multiple small NOCs during ammonification processes. The developed method employed phenyl isothiocyanate as derivatization reagents, followed by high-performance liquid chromatography analysis to measure primary and secondary amines, amides, as well as NH4+ over variable photo-ammonification conditions. In our experimental setup, vacuum ultraviolet (VUV) irradiation serves as the controlled reaction environment to simulate harsh photo-ammonification environment. Representative NOCs, including pyridine, N,N-dimethylformamide, and acrylonitrile, were chosen due to their structural diversity and environmental relevance as model NOCs. This method was able to achieve excellent nitrogen mass balance, and revealed that the last steps of photo-ammonification involved oxidation of nitrogen-adjacent carbon to amide followed by the cleavage of N–C bond. This novel method may also help quantitative investigation of nitrogen transformations in different environmental contexts.
Elucidation of the last steps of photo-ammonification: analytical method development and mechanism elucidation
Front. Environ. Sci. Eng.
Miao, Yingjing (author) / Wang, Hui (author) / Yang, Chunpeng (author) / Zhang, Ruochun (author) / Zhang, Hao (author) / Sun, Peizhe (author)
2024-08-01
Article (Journal)
Electronic Resource
English
MARINE REQUIREMENTS ELUCIDATION REVISITED
| British Library Conference Proceedings | 2010
Social Cohesion: A Conceptual and Political Elucidation
| Online Contents | 2012
PASEOS: Organic Structure Elucidation System for Expert Chemists
| British Library Conference Proceedings | 1993
An analytical elucidation of the influence of surfactant on rock drilling by shear/drag bit
| Springer Verlag | 1997