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61,005 resultsShowing papers similar to Statistical modeling of groundwater geochemistry in northeastern Brazil
ClearAnalysis of Groundwater Quality in the Coastal Aquifer of the Effutu Municipality, Ghana
Researchers analyzed groundwater quality in the coastal aquifer of the Effutu Municipality, Ghana, comparing water quality parameters against WHO permissible limits and using principal component analysis to identify key drivers of water quality variation. The study provides data to assess groundwater suitability for domestic and drinking purposes in an area facing freshwater management challenges.
Study on the Influence of Mining Activities on the Quality of Deep Karst Groundwater Based on Multivariate Statistical Analysis and Hydrochemical Analysis
This study examined how long-term coal mining activities in China affected deep karst groundwater chemistry, finding significant changes to water quality that threaten safe drinking water supply in mining regions.
Study on the characteristics of water chemistry evolution in typical alpine karst basins
Researchers analyzed water chemistry evolution in alpine karst groundwater systems, tracing how geological and hydrological processes shape ion concentrations and water quality in these vulnerable freshwater sources.
GIS Analysis of Organo-Contaminants and Iron Linked to Groundwater and Sediment at Boreholes in Aluu, Delta Region, Nigeria
Researchers used GIS spatial analysis to characterize organo-contaminant and iron concentrations in groundwater and borehole sediments from 10 sites at 45 m depth in Aluu, Nigeria, providing baseline data on contamination sources linked to gastrointestinal illness in communities relying on this groundwater for drinking.
Geochemical Background and Correlation Study of Ground Water Quality in Ebocha-Obrikom of Rivers State, Nigeria
Researchers assessed groundwater quality in the Ebocha-Obrikom area of Nigeria's Niger Delta, a region heavily affected by oil industry pollution. They measured physicochemical properties and heavy metal concentrations across multiple well water samples over a year-long period. The findings revealed correlations between certain heavy metals and water quality parameters, providing baseline data for monitoring contamination in the region.
Combination of multivariate data analysis and mixing modelling to assess tracer potential of contaminants of emerging concern in aquifers
Researchers combined principal component analysis, self-organizing maps, and mixing models to identify which pharmaceutical and industrial contaminants of emerging concern best trace pollution sources in a complex mixed aquifer in Barcelona, finding that lamotrigine, carbamazepine, and two related compounds outperformed conventional chemical tracers.
Assessment of the groundwater recharge processes of a shallow and deep aquifer system (Maggiore Valley, Northwest Italy): a hydrogeochemical and isotopic approach
Researchers analyzed water chemistry and isotopes across shallow and deep groundwater systems in northwest Italy, tracing how water from distant mountain recharge zones mixes before reaching a heavily used drinking water well field. The study clarifies potential pathways for pollutants to reach drinking water supplies, providing critical information for protecting this major regional water resource.
A Hydrochemical Study of Groundwater Salinization in Qinzhou Bay, Guangxi, Southern China
Researchers investigated the causes of increasing groundwater salinization in Qinzhou Bay, China, collecting 110 water samples to trace hydrochemical signatures and identify the mechanisms driving saltwater intrusion since 2013. The findings aim to support better water resource management in the affected coastal agricultural region.
Assessment of Groundwater Contamination in the Southeastern Coast of Brazil: A Potential Threat to Human Health in Marica Municipality
Researchers assessed groundwater contamination in Marica Municipality along Brazil's southeastern coast, finding that rapid urbanization and inadequate sanitation have led to significant sewage pollution. The study suggests that elevated levels of dissolved organic carbon, nutrients, and bacteria in the aquifers pose a potential threat to public health, since groundwater serves as the primary freshwater source for local residents.
Hydrochemical process and controls on the hydrochemistry of river water in the Muling-Xingkai Plain, Northeast China
Researchers analyzed the hydrochemical composition of 33 river water samples from the Muling-Xingkai Plain in northeast China to identify the dominant processes controlling water chemistry. Principal component analysis revealed that weathering of carbonate and silicate rocks was the primary natural control, with agricultural and industrial activities adding elevated nitrogen and sulfate in some areas.
Assessing water quality in North-East Algeria: a comprehensive study using water quality index (WQI) and PCA
Researchers assessed water quality across multiple drinking water sources in North-East Algeria using a water quality index and principal component analysis. The study provides a comprehensive evaluation of contamination levels in the Cheffia Dam, Oued El Aneb, and Treat boreholes, identifying key pollutant sources affecting these important water supplies.
Water cycle modelling strengthened by probabilistic integration of field data for groundwater management of a quite unknown tropical volcanic hydrosystem
Researchers developed a lumped hydrological model for a previously uncharacterized andesitic volcanic hydrosystem on the flanks of Salak volcano in West Java, Indonesia, using electrical resistivity tomography, hydrochemistry, and isotopic analysis to distinguish aquifer types and probabilistically integrate field data for sustainable groundwater management.
Deciphering geospatial variations in water quality of a perennial river for human consumption and agricultural application
Researchers analyzed geospatial variation in water quality along a perennial river to assess human health risks from drinking water exposure, identifying hotspots of contamination exceeding safety thresholds. The study provides a risk-based framework for prioritizing water treatment interventions.
Evaluacion de la calidad de agua mediante un analisis multivariante en los esteros del Golfo de Fonseca, Honduras.
Researchers analyzed water quality data from eight monitoring sites in the Gulf of Fonseca esteros in Honduras (2000-2015) using principal component analysis and cluster analysis, identifying three significant water quality groups with nitrogen, phosphorus, BOD, and alkalinity explaining the greatest variance as indicators of poor water quality.
Water Quality Assessment of Inland Waters in Cartagena de Indias – Colombia, Using Multivariate Statistics
Researchers assessed water quality in four inland water bodies in Cartagena de Indias, Colombia over the period 2008-2022, analyzing parameters including dissolved oxygen, BOD, COD, total coliforms, chlorophyll, and total phosphorus using descriptive and multivariate statistical methods to characterize long-term pollution trends in urban coastal waters.
The influence of stormwater infiltration on downslope groundwater chemistry
Researchers monitored monthly groundwater quality at a bore network downstream of a stormwater infiltration basin in Victoria, Australia, analysing nutrients, major ions, and heavy metals over an extended field program. They identified three groundwater clusters - shallow fresh water near the basin, deep saline water near the stream, and an intermediate mixed zone - revealing that infiltrated stormwater chemistry is transformed by subsurface interactions with soil, vegetation, and underground infrastructure.
Study of the Trends of Chemical–Physical Parameters in Different Karst Aquifers: Some Examples from Italian Alps
Researchers installed data-loggers and conducted multi-year chemical and physical monitoring of karst aquifer springs in the Piedmont region of northwestern Italy to characterize how different hydrogeological conditions influence water quality responses to infiltration events. They found that highly karstified aquifers with small saturated zones showed rapid mineralization decreases during flood events, while well-developed saturated zones exhibited piston flow increases in mineralization.
Seabed Pollution Near Industrialized Seaports: An Enhanced Multivariate Technique to Explore Trace Element Dynamics
Researchers analyzed sediments from the industrialized port of Gijón Bay in Spain, finding elevated concentrations of toxic elements like mercury, lead, and zinc near the port mouth using advanced statistical and geostatistical techniques, revealing how industrial shipping activity leaves lasting chemical signatures in coastal seabeds.
Hydrochemical Evolution and Nitrate Source Identification of River Water and Groundwater in Huashan Watershed, China
Combined hydrochemical analysis, factor analysis, and isotopic methods were applied to trace nitrate sources and transformations in river water and groundwater of the Huashan watershed in China. A Bayesian isotope mixing model (SIAR) quantitatively apportioned nitrate sources, with both water types dominated by HCO3-Ca hydrochemistry derived from precipitation.
Assessment of potentially toxic elements in groundwater through interpolation, pollution indices, and chemometric techniques in Dehradun in Uttarakhand State
Researchers assessed potentially toxic heavy metals (including iron, cadmium, lead, and chromium) in groundwater across an industrial region of northern India, finding contamination levels linked to agricultural runoff, industrial discharge, and land use patterns that pose ongoing health risks to local communities.
Estimating Groundwater Recharge and Precipitation Sources of the Zamora River Basin, Southeastern Ecuador, by Using GIS and Stable Isotopes
This paper is not about microplastics; it uses stable isotopes and GIS-based water balance models to study groundwater recharge mechanisms in the Zamora River Basin in Ecuador.
Mapping the impacts of the anthropogenic activities and seawater intrusion on the shallow coastal aquifer of Port Said, Egypt
Researchers used remote sensing, geophysical surveys, and water chemistry analysis to map groundwater contamination in the coastal area of Port Said, Egypt. They found that anthropogenic activities like fish farming and urbanization, combined with seawater intrusion, have significantly degraded groundwater quality. The study provides an integrated framework for understanding how human activity and saltwater encroachment jointly threaten freshwater resources in coastal regions.
Identification of Hydrochemical Characteristics, Spatial Evolution, and Driving Forces of River Water in Jinjiang Watershed, China
This paper is not about microplastic pollution. It analyzes the hydrochemical characteristics of river water in the Jinjiang Watershed in China, identifying rock weathering, mining, agricultural runoff, and domestic pollution as the main factors influencing water chemistry.
Combining the multivariate statistics and dual stable isotopes methods for nitrogen source identification in coastal rivers of Hangzhou Bay, China
Researchers combined dual stable isotope analysis with statistical modeling to trace nitrogen pollution sources in two coastal rivers flowing into Hangzhou Bay, finding that soil runoff and domestic wastewater together contributed roughly two-thirds of total nitrogen, with aquaculture tailwater as the second-largest source.