Interpreting pH-Dependent Differential UV/VIS Absorbance Spectra to Characterize Carboxylic and Phenolic Chromophores in Natural Organic Matter

Chenyang Zhang, Shansheng Mo,Zhongli Liu,Bingya Chen,Gregory Korshin,Norbert Hertkorn,Jinren Ni,Mingquan Yan

Water research（2023）

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摘要

•Gaussian bands in DAS reveal protonation-active functionalities in NOM.•DAS and FT-ICR-MS identify protonation-active molecules in NOM.•Genetic molecular network analysis identifies active chromophores in NOM molecules.•Molecular orbital theory interprets electronic transitions of active chromophores.

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关键词

natural organic matter (NOM),differential UV-visible absorbance spectra,high resolution mass spectrometry,active chromophores,genetic molecular network

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