Groundwater Quality and Health: Making the Invisible Visible

Environmental Science & Technology, Год журнала: 2023, Номер 57(13), С. 5125 - 5136

Опубликована: Март 6, 2023

Linking groundwater quality to health will make the invisible visible, but there are knowledge gaps understand linkage which requires cross-disciplinary convergent research. The substances in that critical can be classified into five types according sources and characteristics: geogenic substances, biogenic elements, anthropogenic contaminants, emerging pathogens. most intriguing questions related quantitative assessment of human ecological risks exposure via natural or induced artificial discharge: What is list released from discharging groundwater, what pathways receptors' substances? How quantify flux during discharge? procedures we follow assess Answering these fundamental for humans deal with challenges water security quality. This perspective provides recent progresses, gaps, future trends understanding between health.

Язык: Английский

---

Arsenic biogeochemical cycling association with basin-scale dynamics of microbial functionality and organic matter molecular composition

Water Research, Год журнала: 2024, Номер 251, С. 121117 - 121117

Опубликована: Янв. 8, 2024

Язык: Английский

---

Marine Recalcitrant Dissolved Organic Matter Gained by Processing at Sandy Subterranean Estuaries

Environmental Science & Technology, Год журнала: 2025, Номер unknown

Опубликована: Фев. 13, 2025

The sandy subterranean estuary (STE) connecting fresh groundwater to saline sea water is characterized by strong geochemical (salinity, redox, and pH) gradients, with evidence emerging for its role as a hot spot consumption of labile substrates. This inspired us conduct study evaluate whether this holds true dissolved organic matter (DOM), especially given the still mysterious origin marine recalcitrant DOM. Here, characterization DOM 21 samples (depth 1-13 m, salinity 3.9‰ 32.4‰) across 65 m transect an STE located in coastal Guangdong, China, has found systematic biotransformation toward "recalcitrant" carboxyl-rich alicyclic molecules (CRAM). fraction CRAM (%CRAM) increases from 33.1% 76.7% increasing degree degradation salinity. Further, processing DOM, including more "biolabile" lower %CRAM released aquitard, active under oxic conditions than reducing conditions. Given large quantities that recirculates through STEs globally, amount (RDOM) entering ocean after likely be considerable. While studies are needed, can gain CRAM-like compounds way.

Язык: Английский

---

Novel insights into the DOM-driven processes affecting nitrogen cycling in shallow aquifers of the West Liao River Plain: Evidence from FT-ICR MS and isotope analyses

Journal of Hydrology, Год журнала: 2025, Номер unknown, С. 132969 - 132969

Опубликована: Фев. 1, 2025

Язык: Английский

---

Dissolved Inorganic Carbon Evolution of Sediment Porewater in the Huixian Wetland, Southwest China

Ground Water, Год журнала: 2025, Номер unknown

Опубликована: Янв. 17, 2025

Wetlands, as crucial terrestrial carbon reservoirs, have recently suffered severe degradation due to intense human activities. Lacustrine sediments serve vital indicators for understanding wetland environmental changes. In the current paper, porewater samples were extracted from lacustrine sediment in three boreholes with a depth of ~75 cm Huixian karst wetland, southwest China, study chemical and dissolved inorganic (DIC) evolution under anthropogenic influence. Two are situated beneath Mudong Lake, while other one is degraded area. The results show that central region Lake natural HCO3-Ca type water recharged by groundwater evidenced depleted 2H -18O isotopes. Methanogenesis prevails this area, suggested positive δ13C values ranging 4.29‰ 7.05‰. However, shallow at western edge exhibit significantly higher concentrations NO3 - SO4 2-, resulting agricultural input influenced oxidation pyrite. These processes lead decrease methane production generate DIC through organic fertilizer carbonate weathering sulfuric acid, thereby altering values. types mixing observed based on increasing depth, which can be attributed unique subsystems. This work highlights potential impact human-induced variations fate DIC, particularly environments.

Язык: Английский

---

Carbon and iron isotope approach elucidates the enrichment of geogenic phosphorus in alluvial-lacustrine sedimentary aquifers

Journal of Hydrology, Год журнала: 2022, Номер 607, С. 127517 - 127517

Опубликована: Янв. 25, 2022

Язык: Английский

---

Paleo-Geomorphology Determines Spatial Variability of Geogenic Ammonium Concentration in Quaternary Aquifers

Environmental Science & Technology, Год журнала: 2023, Номер 57(14), С. 5726 - 5738

Опубликована: Март 29, 2023

Naturally occurring (i.e., geogenic) ammonium in groundwater has been widely detected globally, but the major controls on its regional distribution have poorly characterized. Here, we identified dominant role of paleo-geomorphology driven by paleo-climate controlling spatial variability geogenic using random forest algorithm and revealed underlying mechanisms based borehole sediment analysis data obtained from Dongting Lake Plain central Yangtze River basins China. In paleo-channel (PC) area, aquifer depth-matched sediments were deposited during last deglaciation when warm climate resulted rapid filling into incised valleys, terrestrial organic matter (OM) mainly as lignin experienced less degradation prior to sedimentation had lower humification, higher N abundance, nominal oxidation state carbon (NOSC). paleo-interfluve (PI) glaciation, followed intensive erosion surface glacial maximum, OM partly degraded aliphatics NOSC. As a result, under present anaerobic conditions, less-humic N-rich with more oxidized C tends be intensively mineralized PC area than those PI area. These findings highlight importance enrichment groundwater, which universal significance for understanding genesis high loads aquatic environment worldwide.

Язык: Английский

---

Enrichment of geogenic phosphorus in a coastal groundwater system: New insights from dissolved organic matter characterization

Chemosphere, Год журнала: 2023, Номер 322, С. 138214 - 138214

Опубликована: Фев. 23, 2023

Язык: Английский

---

Isotopic and spectral signatures unravel the sources, preservation and degradation of sedimentary organic matter in the Dongzhai Harbor mangrove estuary, southern China

Journal of Hydrology, Год журнала: 2023, Номер 618, С. 129256 - 129256

Опубликована: Фев. 10, 2023

Язык: Английский

---

Linking DOM characteristics to microbial community: The potential role of DOM mineralization for arsenic release in shallow groundwater

Journal of Hazardous Materials, Год журнала: 2023, Номер 454, С. 131566 - 131566

Опубликована: Май 3, 2023

Язык: Английский

---