Increase of Fluorescence of Humic-Like Substances in Interaction with Cd(II): a Photoinduced Charge Transfer Approach.
J Fluoresc
; 32(5): 1761-1767, 2022 Sep.
Article
em En
| MEDLINE
| ID: mdl-35678899
ABSTRACT
Described is the enhancement of fluorescence intensity due to the interaction of a humic-like substance (HLS 1%) extracted from process water (PW) and Cd(II) ions in aqueous solution. Using Canonical Polyadic/Parallel Factor Analysis (CP/PARAFAC), two main components were seen that contributed to fluorescence, the first one increased it and the second one kept it constant in both static and dynamic fluorescence studies. Two-dimensional FTIR analysis indicated that the interaction of HLS 1% and Cd(II) ions occurred in the following order of affinity with the groups C-O bonds in polysaccharides > C-O bonds in carboxylic acid. The results obtained suggest that the increase in fluorescence intensity and lifetime suggest a photoinduced charge transfer (PCT) between Cd(II) ions and carboxylic acid groups present in HLS 1%.
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Coleções:
01-internacional
Base de dados:
MEDLINE
Assunto principal:
Cádmio
/
Substâncias Húmicas
Idioma:
En
Ano de publicação:
2022
Tipo de documento:
Article