Spatial distribution and molecular evidence of CO2 dark production from lake sediments during anoxic-oxic transitions across a watershed DOI
W. Guo, Peng Liao, Junjian Wang

et al.

Chemical Geology, Journal Year: 2024, Volume and Issue: unknown, P. 122577 - 122577

Published: Dec. 1, 2024

Language: Английский

Seasonal and Spatial Fluctuations of Reactive Oxygen Species in Riparian Soils and Their Contributions on Organic Carbon Mineralization DOI
Fuhao Liu, Zhiqiang Wang, Jing Liu

et al.

Environmental Science & Technology, Journal Year: 2024, Volume and Issue: 58(16), P. 7066 - 7077

Published: April 10, 2024

Reactive oxygen species (ROS) are ubiquitous in the natural environment and play a pivotal role biogeochemical processes. However, spatiotemporal distribution production mechanisms of ROS riparian soil remain unknown. Herein, we performed uninterrupted monitoring to investigate variation at different sites Weihe River zone throughout year. Fluorescence imaging quantitative analysis clearly showed soils. The concentration superoxide (O

Language: Английский

Citations

15
Interactions between iron mineral and low-molecular-weight organic acids accelerated nitrogen conversion and release in lake sediments DOI

Wan Yang,

Y. Y. Liang,

Taige Li

et al.

Water Research, Journal Year: 2025, Volume and Issue: 275, P. 123174 - 123174

Published: Jan. 21, 2025

Language: Английский

Citations

1
Molecular transformation of petroleum compounds by hydroxyl radicals produced upon oxidation of reduced nontronite DOI
Yuan Liu, Yahe Zhang, Guo Chen

et al.

Geochimica et Cosmochimica Acta, Journal Year: 2024, Volume and Issue: 371, P. 31 - 51

Published: March 4, 2024

Language: Английский

Citations

7
The Effect of Redox Fluctuation on Carbon Mineralization in Riparian Soil: An Analysis of the Hotspot Zone of Reactive Oxygen Species Production DOI
Fuhao Liu, Yuanyuan Ding, Jing Liu

et al.

Water Research, Journal Year: 2024, Volume and Issue: 265, P. 122294 - 122294

Published: Aug. 18, 2024

Language: Английский

Citations

6
Redox potential model for guiding moderate oxidation of polycyclic aromatic hydrocarbons in soils DOI
Yanping Ji, Jiang Xu, Li Zhu

et al.

Journal of Hazardous Materials, Journal Year: 2024, Volume and Issue: 471, P. 134443 - 134443

Published: April 26, 2024

Language: Английский

Citations

4
A Novel Perspective on the Role of Hydroxyl Radicals in Soil Organic Carbon Mineralization within the Detritusphere: Stimulating C-Degrading Enzyme Activities DOI
Kangjie Yang, Bin Jia,

Jinbo Liu

et al.

Environmental Science & Technology, Journal Year: 2025, Volume and Issue: unknown

Published: March 6, 2025

Detritusphere is a hotspot of carbon cycling in terrestrial ecosystems, yet the mineralization soil organic (SOC) within this microregion associated with reactive oxygen species (ROS) remains unclear. Herein, we investigated ROS production and distribution detritusphere six representative soils evaluated their contributions to SOC mineralization. We found that was significantly correlated several chemical biological factors, including pH, water-soluble phenols, water-extractable carbon, phenol oxidase activity, surface-bound or complexed Fe(II) low-crystalline minerals, highly crystalline Fe(II)-bearing SOC. These factors collectively contributed 99.6% variation production, as revealed by redundancy analyses. Among ROS, hydroxyl radicals (•OH) were key contributors mineralization, responsible for 10.4%-38.7% CO2 emissions quenching experiments. Inhibiting •OH decreased C-degrading enzyme activities, indicating stimulates increasing activity. Structural equation modeling further demonstrated promotes activities degrading phenols unlock "enzyme latch" availability upregulate gene expression. pathways equally exceeded its direct effect. findings provide detailed insight into mechanistic •OH-mediated dynamics detritusphere.

Language: Английский

Citations

0
Abiotic and biotic transformation of petroleum hydrocarbons coupled with redox cycling of structural iron in clay mineral DOI
Yuan Liu, Hongyu Chen, Yizhi Sheng

et al.

Geochimica et Cosmochimica Acta, Journal Year: 2025, Volume and Issue: unknown

Published: March 1, 2025

Language: Английский

Citations

0
Insight into sequestration and release characteristics of uranium(VI) on phlogopite in the presence of humic acid DOI
Peng Wang,

Zhiwei Niu,

Xinyi Shi

et al.

The Science of The Total Environment, Journal Year: 2025, Volume and Issue: 973, P. 179160 - 179160

Published: March 23, 2025

Language: Английский

Citations

0
Carbon Isotope Fractionation of Dissolved Organic Matter Due to •OH-Based Oxidation DOI

Yunsong Zheng,

Yuxuan Tan,

Zhenchen Wan

et al.

Environmental Science & Technology, Journal Year: 2025, Volume and Issue: unknown

Published: May 2, 2025

•OH-based oxidation plays a crucial role in dissolved organic matter (DOM) transformation and carbon flux, whereas quantifying the contribution of this pathway remains challenging. Here we combined concentration with isotope analysis DOM its generated CO2 to quantify oxidation. Results showed that 13C enrichment factors (ε values) were -8.1‰ -8.9‰ for benzene ring aromatic compounds, -4.2‰ -28.9‰ lower-molecular-weight acids, -13.0‰ from sediment. The fractionation sediment reflects average ε value humic substances acids. These values more negative than those photochemical microbial processes, enabling identification mechanisms. Using an end-member mix model, found proportion mineralization total emission ranged 20.9% 39.8% 100 g/L by 5-20 mM H2O2 under pH-neutral condition within 2 h was only 2% air same conditions. We also inorganic degassing contributed greatly during This study presents new isotope-based tool quantitatively assess DOM.

Language: Английский

Citations

0
Production and prediction of hydroxyl radicals in distinct redox-fluctuation zones of the Yellow River Estuary DOI
Yucheng Feng,

Yinshun Dai,

Ruixue Liu

et al.

Journal of Hazardous Materials, Journal Year: 2024, Volume and Issue: 469, P. 133980 - 133980

Published: March 6, 2024

Language: Английский

Citations

3