Transformation of Nitrogenous Compounds in Water Microdroplets

Microdroplets drive small-molecule activation reactions that are difficult in bulk solution. Recent studies have demonstrated that microdroplets activate inert N2 under ambient conditions to generate multiple nitrogencontaining compounds. However, there are still many controversial issues regarding the transformation of nitrogencontaining compounds in water microdroplets. Here, we combine online high-resolution mass spectrometry on two instrument platforms with 15N and 18O labeling to investigate nitrogen-containing species in pneumatically generated water microdroplets. Ammonium-containing water clusters, nitrite, and nitrate ions were detected on both instruments, whereas a signal assigned to NO+ was observed only on the Agilent 6224 TOF MS. Nebulization with

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Publication Details

Journal
ChemRxiv
Published
2026-11-02
DOI
https://doi.org/10.26434/chemrxiv.15011519/v1
Primary Topic
Mass Spectrometry Techniques and Applications
Type
preprint
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preprint

Transformation of Nitrogenous Compounds in Water Microdroplets

Zaifa Shi, L. Zheng, Jing Nie, Shui‐Chao Lin
4 links
ChemRxiv
Mass Spectrometry Techniques and Applications
preprint

Transformation of Nitrogenous Compounds in Water Microdroplets

Zaifa Shi, L. Zheng, Jing Nie, Shui‐Chao Lin
preprint en

Abstract

Microdroplets drive small-molecule activation reactions that are difficult in bulk solution. Recent studies have demonstrated that microdroplets activate inert N2 under ambient conditions to generate multiple nitrogencontaining compounds. However, there are still many controversial issues regarding the transformation of nitrogencontaining compounds in water microdroplets. Here, we combine online high-resolution mass spectrometry on two instrument platforms with 15N and 18O labeling to investigate nitrogen-containing species in pneumatically generated water microdroplets. Ammonium-containing water clusters, nitrite, and nitrate ions were detected on both instruments, whereas a signal assigned to NO+ was observed only on the Agilent 6224 TOF MS. Nebulization with

ChemRxiv
Xiamen University (CN), Collaborative Innovation Center of Chemistry for Energy Materials (CN)
Mass Spectrometry Techniques and Applications
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