Groundwater-derived carbon stimulates headwater stream CO2 emission potential on the Qinghai-Tibet Plateau DOI

You Wu,

Guangrui Yang, Lize Meng

et al.

Water Research, Journal Year: 2024, Volume and Issue: 268, P. 122684 - 122684

Published: Oct. 24, 2024

Language: Английский

Photoinduced Evolutions of Permafrost-Derived Carbon in Subarctic Thermokarst Pond Surface Waters DOI
Tao Wang, Carmen Kalalian, Xinke Wang

et al.

Environmental Science & Technology, Journal Year: 2024, Volume and Issue: 58(39), P. 17429 - 17440

Published: Sept. 18, 2024

In subarctic regions, rising temperature and permafrost thaw lead to the formation of thermokarst ponds, where organics from eroding accumulate. Despite its environmental significance, limited knowledge exists regarding photosensitivity permafrost-derived carbon in these ponds. this study, laboratory experiments were conducted explore photochemical transformations organic matter surface water samples ponds different environments northern Quebec, Canada. One pond near Kuujjuarapik is characterized by presence a collapsing palsa therefore organically rich, while other Umiujaq adjacent lithalsa thus contains fewer matters. Photobleaching occurred sample upon irradiation, whereas exhibited an increase light absorbance at wavelength related aromatic functionalities, indicating aging processes. Ultrahigh-resolution mass spectrometry analysis reveals that preferentially photoproduced highly unsaturated CHO compounds with great aromaticity, irradiated produced higher proportion CHON aromatics reduced nitrogen functionalities. Overall, study illustrates reactivity varies source matter. The observed differences contribute improved understanding emission volatile discovered earlier. Further insights into photoinduced evolutions may require classification therein.

Language: Английский

Citations

0
Interactions between nanobiochar and arsenic: Effects of biochar aging methods on arsenic binding capacity and mechanisms DOI
Maoqiu Wang, Qingqing Liu

Environmental Pollution, Journal Year: 2024, Volume and Issue: 363, P. 125105 - 125105

Published: Oct. 10, 2024

Language: Английский

Citations

0
Light-driven differences in bacterial networks and organic matter decomposition: Insights from an analysis of the harmful cyanobacterium Microcystis aeruginosa PCC 7806 DOI
Yan Liu,

Xiding Wang,

Xudong Liu

et al.

Harmful Algae, Journal Year: 2024, Volume and Issue: 139, P. 102740 - 102740

Published: Oct. 22, 2024

Language: Английский

Citations

0
Groundwater-derived carbon stimulates headwater stream CO2 emission potential on the Qinghai-Tibet Plateau DOI

You Wu,

Guangrui Yang, Lize Meng

et al.

Water Research, Journal Year: 2024, Volume and Issue: 268, P. 122684 - 122684

Published: Oct. 24, 2024

Language: Английский

Citations

0