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• W4328048556 abstract "Abstract Ferric ions can bind strongly with dissolved organic matter (DOM), including humic acids (HA), fulvic acids (FA), and protein-like substances, whereas isolation of Fe-DOM precipitates (Fe-DOM P ) and their biochemical characteristics remain unclear. In this work FeCl 3 was used to isolate DOM components from various sources, including river, lake, soil, cow dung, and standard tryptophan and tyrosine, through precipitation at pH 7.5–8.5. The Fe-DOM P contribute to total DOM by approximately 38.6–93.8% of FA, 76.2% of HA and 25.0–30.4% of tryptophan and tyrosine, whilst fluorescence spectra allowed to monitor/discriminate the various DOM fractions in the samples. The relative intensity of the main infrared peaks such as 3406‒3383 cm −1 (aromatic OH), 1689‒1635 cm −1 (‒COOH), 1523–1504 cm −1 (amide) and 1176–1033 cm −1 (‒S=O) show either to decline or disappear in Fe‒DOM P . These results suggest the occurrence of Fe bonds with various functional groups of DOM, indicating the formation of π–d electron bonding systems of different strengths in Fe‒DOM P . The novel method used for isolation of Fe-DOM P shows promising in opening a new frontier both at laboratory and industrial purposes. Furthermore, results obtained may provide a better understanding of metal–organic complexes involved in the regulation of the long-term stabilization/sequestration of DOM in soils and waters." @default.
• W4328048556 created "2023-03-22" @default.
• W4328048556 creator A5000531687 @default.
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• W4328048556 creator A5091199678 @default.
• W4328048556 date "2023-03-20" @default.
• W4328048556 modified "2023-09-27" @default.
• W4328048556 title "Isolation of dissolved organic matter from aqueous solution by precipitation with FeCl3: mechanisms and significance in environmental perspectives" @default.
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