Fate of Dimethylsilanediol (DMSD) via Indirect Photolysis in Water DOI Creative Commons
Jaeshin Kim, Debra A. McNett,

E. Lynn McClymont

et al.

Chemosphere, Journal Year: 2024, Volume and Issue: 362, P. 142670 - 142670

Published: June 21, 2024

Dimethylsilanediol (DMSD) is the common degradation product of ubiquitous polydimethylsiloxane (PDMS) and volatile methylsiloxanes (VMS) in water soil. Given high solubility DMSD water, further this compartment particular importance. While appears relatively resistant to standard hydrolysis or biodegradation studies, it may degrade by indirect photolysis surface waters through oxidation hydroxyl radicals. The formation radicals governed nitrate ions other promoters presence sunlight. In study, we investigated impact on oxidative decomposition under simulated solar light. When exposed light, can all way natural, mineralized substances, namely carbon dioxide (in form carbonic acid) silicic acid, via intermediate methylsilanetriol (MST).

Language: Английский

Reimagining the Kendall plot: using δ 15 N and δ 18 O of nitrate and advanced machine learning to improve N pollutant source classification DOI

Katarzyna Samborska-Goik,

Leonard I. Wassenaar

Isotopes in Environmental and Health Studies, Journal Year: 2025, Volume and Issue: unknown, P. 1 - 26

Published: March 24, 2025

Nitrate (NO3-) pollution is a serious water quality issue in many countries due to contamination of lakes, rivers, and aquifers by intensive agriculture practices inadequate wastewater management. associated cultural eutrophication are anticipated increase worldwide, highlighting the need control reduce nitrogen pollution. The stable isotope ratios nitrate (δ15N, δ18O) widely used as tracers sources. primary technique for identifying sources has been longstanding Kendall boxplot, despite improved methods using Bayes' theorem R language estimating source fractions hydrogeochemical context, N data expert assessment. This article improves classification aqueous comprehensive published from four known pollutant types applying machine learning algorithms. AI modelling results reveal depictions offer robust statistical framework essential given increased better-informed management strategies.

Language: Английский

Citations

0
Research on the traceability and treatment of nitrate pollution in groundwater: a comprehensive review DOI
Yuhao Liu, Yu Zhang,

Haiyang Lv

et al.

Environmental Geochemistry and Health, Journal Year: 2025, Volume and Issue: 47(4)

Published: March 7, 2025

Language: Английский

Citations

0
Coupled processes involving ammonium inputs, microbial nitrification, and calcite dissolution control riverine nitrate pollution in the piedmont zone (Qingshui River, China) DOI
Jun Li, Haoyang Liu, Hongwei Pei

et al.

The Science of The Total Environment, Journal Year: 2024, Volume and Issue: 931, P. 172970 - 172970

Published: May 4, 2024

Language: Английский

Citations

2
Fate of Dimethylsilanediol (DMSD) via Indirect Photolysis in Water DOI Creative Commons
Jaeshin Kim, Debra A. McNett,

E. Lynn McClymont

et al.

Chemosphere, Journal Year: 2024, Volume and Issue: 362, P. 142670 - 142670

Published: June 21, 2024

Dimethylsilanediol (DMSD) is the common degradation product of ubiquitous polydimethylsiloxane (PDMS) and volatile methylsiloxanes (VMS) in water soil. Given high solubility DMSD water, further this compartment particular importance. While appears relatively resistant to standard hydrolysis or biodegradation studies, it may degrade by indirect photolysis surface waters through oxidation hydroxyl radicals. The formation radicals governed nitrate ions other promoters presence sunlight. In study, we investigated impact on oxidative decomposition under simulated solar light. When exposed light, can all way natural, mineralized substances, namely carbon dioxide (in form carbonic acid) silicic acid, via intermediate methylsilanetriol (MST).

Language: Английский

Citations

0