The impact of water-sediment regulation scheme (WSRS) on the chemistry of dissolved organic matter in the Yellow River estuary and adjacent waters DOI Creative Commons

Donglei Niu,

Yanfang Li, Yang Tan

et al.

Water Research, Journal Year: 2025, Volume and Issue: 282, P. 123669 - 123669

Published: April 17, 2025

Dissolved organic matter (DOM) plays important roles in the global carbon cycle and aquatic ecosystem health. Estuaries are critical zones connecting land ocean which DOM experiences dispersion, transformation, degradation, deposition, etc. The Water-sediment regulation scheme (WSRS) was implemented Yellow River (YR) approximately half of annually sediment a quarter water were poured into estuary around 20 days. Meanwhile, huge amounts discharged (YRE) rapidly, but their processes fates YRE adjacent seas unclear. This study aims to investigate molecular spectrum compositions its associated transformation mechanisms sea before (from June 8 12, 2022) after July 18 22, WSRS. A relatively greater amount highly unsaturated compounds terrestrial-derived found with higher aromaticity humification degree WSRS, by bulk geochemical techniques, optical spectroscopy Fourier transform ion cyclotron resonance mass spectrometry (FT-ICR MS) techniques. High levels less photodegraded estuarine region due rapidly pouring fresh YRE. high suspended concentration facilitates sorption dissolved (DOC), especially those sulphur-containing decreased both relative intensity number. However, long term, WSRS may lead an increase DOC column. Along YR plume coastal current, transported from Laizhou Bay south arrived at Bohai Strait east. Overall, this research provides valuable insights variations induced intensive dam-orientated short term.

Language: Английский

Thermal Hydrolysis-Induced Molecular Transformations in Sludge: Implications for Photochemical Reactivity and Dissolved Antibiotics Photodissipation DOI
Haifeng Wen,

Xin Wang,

Xinchao Zhang

et al.

Journal of Hazardous Materials, Journal Year: 2025, Volume and Issue: unknown, P. 137985 - 137985

Published: March 1, 2025

Language: Английский

Citations

0
The impact of water-sediment regulation scheme (WSRS) on the chemistry of dissolved organic matter in the Yellow River estuary and adjacent waters DOI Creative Commons

Donglei Niu,

Yanfang Li, Yang Tan

et al.

Water Research, Journal Year: 2025, Volume and Issue: 282, P. 123669 - 123669

Published: April 17, 2025

Dissolved organic matter (DOM) plays important roles in the global carbon cycle and aquatic ecosystem health. Estuaries are critical zones connecting land ocean which DOM experiences dispersion, transformation, degradation, deposition, etc. The Water-sediment regulation scheme (WSRS) was implemented Yellow River (YR) approximately half of annually sediment a quarter water were poured into estuary around 20 days. Meanwhile, huge amounts discharged (YRE) rapidly, but their processes fates YRE adjacent seas unclear. This study aims to investigate molecular spectrum compositions its associated transformation mechanisms sea before (from June 8 12, 2022) after July 18 22, WSRS. A relatively greater amount highly unsaturated compounds terrestrial-derived found with higher aromaticity humification degree WSRS, by bulk geochemical techniques, optical spectroscopy Fourier transform ion cyclotron resonance mass spectrometry (FT-ICR MS) techniques. High levels less photodegraded estuarine region due rapidly pouring fresh YRE. high suspended concentration facilitates sorption dissolved (DOC), especially those sulphur-containing decreased both relative intensity number. However, long term, WSRS may lead an increase DOC column. Along YR plume coastal current, transported from Laizhou Bay south arrived at Bohai Strait east. Overall, this research provides valuable insights variations induced intensive dam-orientated short term.

Language: Английский

Citations

0