Seasonal nitrate variations, risks, and sources in groundwater under different land use types in a thousand-year-cultivated region, northwestern China

Environmental Research, Год журнала: 2024, Номер 251, С. 118699 - 118699

Опубликована: Март 15, 2024

Язык: Английский

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Analyzing Multi-Year Nitrate Concentration Evolution in Alabama Aquatic Systems Using a Machine Learning Model

Environments, Год журнала: 2025, Номер 12(3), С. 75 - 75

Опубликована: Март 1, 2025

Rising nitrate contamination in water systems poses significant risks to public health and ecosystem stability, necessitating advanced modeling understand dynamics more accurately. This study applies the long short-term memory (LSTM) investigate hydrologic environmental factors influencing concentration rivers aquifers across state of Alabama southeast United States. By integrating dynamic data such as streamflow groundwater levels with static catchment attributes, machine learning model identifies primary drivers fluctuations, offering detailed insights into complex interactions affecting multi-year concentrations natural aquatic systems. In addition, a novel LSTM-based approach utilizes synthetic surface predict levels, helping address monitoring gaps connected these rivers. method reveals potential correlations between dynamics, which is particularly meaningful given lack quality observations many aquifers. Field applications further show that, while LSTM effectively captures seasonal trends, limitations representing extreme events suggest areas for refinement. These findings contribute data-driven management, enhancing understanding behavior interconnected

Язык: Английский

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The interaction between nutrients and heavy metals in lakes and rivers entering lakes

Ecological Indicators, Год журнала: 2024, Номер 161, С. 111963 - 111963

Опубликована: Апрель 1, 2024

This study investigated the conditions and modes of interaction between nutrients heavy metals within river lake environments under multivariate conditions. Nitrogen phosphorus were categorized into dissolved phosphorus, inorganic nitrogen, ammonium nitrate nitrogen based on their chemical composition. Their correlations with metal elements scrutinized utilizing Bayesian models. The results revealed following: (1) A robust interrelationship was observed sediment soluble sediments water bodies. (2) In environments, competition relatively weak, influence environmental factors variable, without discernible patterns. phenomenon may be attributed to low concentration in overlying absence external inputs. (3) Competition weaker than that lakes. flow dynamics velocity rivers, coupled strong self-purification ability. (4) Dissolved (DP) exhibited greater control over direction adsorption desorption compared (IP). (5) Similarly, total (DTN) (TN). (6) Nitrate (NO3–-N) (NH4+-N) simultaneously controlled directions such as Cr, Mn, Ni, Zn, Pb sediment, action dependent soil capacity. These findings provide valuable insights complex interactions shaping nutrient-metal aquatic systems, offering potential avenues for enhanced management remediation strategies.

Язык: Английский

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Exploration of trace elements in groundwater and associated human health risk in Chattogram City of Bangladesh

Heliyon, Год журнала: 2024, Номер 10(15), С. e35738 - e35738

Опубликована: Авг. 1, 2024

The study aimed to evaluate trace metals in the groundwater of Chattogram City located on southeastern coast Bangladesh and assess their potential health risks. Given city's unique characteristics as both a coastal industrial hub Bangladesh, knowledge gap persists particularly assessment metals. A random sampling technique was applied collect one hundred seventeen samples from different wards city analyze some (Cr, Cd, Fe, Cu, Mn, Pb, Zn) quality collected water evaluated using indices, such Heavy Metal Evaluation Index (HEI), Groundwater Quality (GWQI), Pollution (HPI), Degree Contamination (C

Язык: Английский

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Human Health Risk from Groundwater Consumption: A Case Study in the Apaaso-Tafo Community in the Bono East Region of Ghana

Heliyon, Год журнала: 2025, Номер 11(3), С. e42460 - e42460

Опубликована: Фев. 1, 2025

Water is a nutrient for life and resource human development, therefore towns cities often build treatment systems to provide wholesome water consumption, bathing, washing, etc. For rural communities where centralised plants are lacking, groundwater (GW) the of choice due its relatively low pathogenic loading turbidity. However, GW highly susceptible contamination from anthropogenic activities. In Bono East region Ghana, 94 % solid waste 89 wastewater disposed on roadside without treatment, posing risk resources. Despite potential in region, few researchers have assessed quality, none has evaluated infectious consumption. this case study, quality Apaaso-Tafo community was health risks posed consumers were evaluated. Twenty samples collected ten boreholes. The concentrations metals (Ca2+, Mg2+ Fe) determined using atomic absorption spectroscopy, bacteria (total faecal coliform) Multiple Tube Fermentation Membrane Filter Techniques, physicochemical qualities electrometric, titrimetric, argentometric spectrophotometric methods. indices (WQI) infection probability drinking computed. WQI showed that most (80 %) within acceptable limits. Except pH, temperature, turbidity total coliform bacteria, all parameters met WHO standards. 40 boreholes contained 50 500 cfu/100 mL daily between 1 7.63 %. It recommended standpipes be fitted with membrane or nano filters capable removing viruses reduce risk. authorities should also monitor regularly respond changes appropriate intervention such as issuing 'boil-before-drinking' notices encouraging parents bottled sachet their young children. Future research an increased number communities, sample size sampling frequency conducted enhance generalisability these findings.

Язык: Английский

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Hydrochemical characteristics, water quality, and probabilistic health risk assessments of groundwater in Caraveli Province, South Peru

Human and Ecological Risk Assessment An International Journal, Год журнала: 2025, Номер unknown, С. 1 - 24

Опубликована: Фев. 18, 2025

Язык: Английский

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Combining Hydro-Geochemistry and Environmental Isotope Methods to Evaluate Groundwater Quality and Health Risk (Middle Nile Delta, Egypt)

Hydrology, Год журнала: 2025, Номер 12(4), С. 72 - 72

Опубликована: Март 27, 2025

This study aims to assess the vulnerability of groundwater in Nile Delta contamination and evaluate its suitability for drinking irrigation. A total 28 wells (ranging from 23 120 m depth) two surface water samples were analyzed dissolved solids (TDS), heavy metals, quality index (GWQI), hazard quotient (HQ). The findings reveal that deep (60–120 m) displays paleo-water characteristics, with low TDS, hardness, minimal metal contamination. In contrast, shallow (<60 is categorized into three groups: paleo-water-like, recent elevated TDS mixed water. Most (64%) are Ca-HCO3 type, while 28% Na-HCO3, 8% Na-Cl, latter associated sewage infiltration. deemed suitable irrigation, but varied significantly—4% classified as “excellent”, 64% “good”, 32% “poor”. HQ analysis identified manganese a significant health risk, 56% exceeding safe levels. These highlight varying Delta, emphasizing concerns regarding risks particularly manganese, need improved monitoring management.

Язык: Английский

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Multi-disciplinary investigation for detection, characterisation and monitoring of contamination from a solid waste illegal dumpsite, Peshawar, NW Pakistan

Geomatics Natural Hazards and Risk, Год журнала: 2025, Номер 16(1)

Опубликована: Апрель 3, 2025

Язык: Английский

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Investigating sources, driving forces, and potential health risk of nitrate in groundwater for safe water supply

International Journal of Environmental Science and Technology, Год журнала: 2025, Номер unknown

Опубликована: Апрель 5, 2025

Язык: Английский

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Effects of Ecological Water Replenishment on Microbial Denitrification in Aquatic Environment of Infiltration Area

Journal of Hazardous Materials, Год журнала: 2025, Номер unknown, С. 138688 - 138688

Опубликована: Май 1, 2025

Язык: Английский

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