Natural Background Level, Source Apportionment and Health Risk Assessment of Potentially Toxic Elements in Multi-layer Aquifers of Arid Area in Northwest China

Journal of Hazardous Materials, Journal Year: 2024, Volume and Issue: 479, P. 135663 - 135663

Published: Aug. 29, 2024

Language: Английский

---

Quality evaluation and health risk assessment of karst groundwater in Southwest China

The Science of The Total Environment, Journal Year: 2024, Volume and Issue: 946, P. 174371 - 174371

Published: June 28, 2024

Language: Английский

---

Organochlorine pesticides in Ethiopian waters: Implications for environmental and human health

Toxicology Reports, Journal Year: 2024, Volume and Issue: 12, P. 622 - 630

Published: June 1, 2024

Despite the global ban on organochlorine pesticides (OCPs) since 1970s, their use continues in many developing countries, including Ethiopia, primarily due to lack of viable alternatives and weak regulations. Nonetheless, extent contamination resulting environmental health consequences these countries remain inadequately understood. To address knowledge gaps, we conducted a comprehensive analysis reported concentrations (n=398) OCPs (n=30) distinct yet interconnected water matrices: water, sediment, biota Ethiopia. Our revealed notable geographical bias, with higher found sediments (0.074-1161.2 µg/kg), followed by (0.024-1003 µg/kg) (0.001-1.85 µg/L). Moreover, DDTs, endosulfan, hexachlorohexenes (HCHs) were among most frequently detected Ethiopian waters. The DDT metabolite

Language: Английский

---

Groundwater quality and hydrogeochemical challenges in the Sarakhs Plain, NE Iran: a call for sustainable management

Environmental Geochemistry and Health, Journal Year: 2025, Volume and Issue: 47(3)

Published: Feb. 12, 2025

Language: Английский

---

Mapping and assessing impacts of land use land cover and climate conditions on groundwater quality using RS & GIS

Applied Water Science, Journal Year: 2025, Volume and Issue: 15(3)

Published: Feb. 19, 2025

Abstract Groundwater is an essential source for drinking purposes; hence, a qualitative analysis necessary groundwater resources. This study aims to assess the impacts of dynamic land use cover (LULC) and climatic conditions on quality purposes. The investigative research used water index (WQI) analyze identified using LULC map conditions. It extends integrated combined approach different aspects. provides comprehensive understanding how various factors influence quality. total area classified as excellent, good, poor, very unfit consumption based WQI. results concluded that only 10.17% has excellent quality, 19.97% good 9.013% 5.73% have poor respectively, 55% consumption. indicated areas with agricultural expansion, urban development, some natural such topographic features high soil erodibility led dissolved solids, electrical conductivity levels, heavy metals. main lead contamination include expansion development. On other hand, conditions, variations in temperature precipitation, also influenced aids examining perspectives, which will lend hand managers make suitable decisions sustainable development plans conserve economically important region.

Language: Английский

---

Spatial pattern of groundwater chemistry in a typical piedmont plain of Northern China driven by natural and anthropogenic forces

Scientific Reports, Journal Year: 2025, Volume and Issue: 15(1)

Published: March 4, 2025

Groundwater is crucial for human society's development in piedmont plains, yet its hydrogeochemistry often exhibits complex spatial distributions due to the interplay of nature and factors. Ninety-two phreatic groundwater samples were collected from a typical plain northern China analyzed using self-organizing map combined with hydrogeochemical simulation, diagrams, entropy-weighted water quality index. categorized into four clusters, demonstrating gradual facies evolution HCO3-Ca Cl-Mg·Ca Cl-Na, along an increase NO3- content order clusters IV, II, III, I. Natural processes, including silicates weathering reverse cation-exchange, establish natural fundamental framework chemistry, which furtherly sculptured by agricultural substances input. was predominantly excellent or good, index (EWQI) values below 100 at over 92% sampling sites. relatively poorer upstream areas near mountains Hutuo River, where stratum permeability high, but improves downstream lower. Agricultural land use variation aquifer are responsible observed variations chemistry. contaminants warrant attention protection plains that long-term activities, especially mountains. This research understanding distribution chemistry provides scientific guidance related management.

Language: Английский

---

Distribution Characteristics and Pollution Evaluation of Heavy Metals in Surface Sediments in China’s Largest Freshwater Lake

Research Square (Research Square), Journal Year: 2025, Volume and Issue: unknown

Published: April 7, 2025

The spatial distribution characteristics and pollution sources of eight heavy metals Mercury (Hg), Copper (Cu), Lead (Pb), Cadmium (Cd), Zinc (Zn), Arsenic (As), Chromium (Cr) Nickel (Ni) in the sediments around within Poyang Lake were studied using Kriging interpolation method, Pearson correlation analysis, principal component analysis(PCA). cumulative study area analyzed, risk assessment was conducted geo-accumulation, potential ecological risk, load index methods. results showed that average concentrations Cr, Cu, Ni, Pb, Zn, Hg overall surface 2.26, 5.13, 1.26, 2.46, 1.75, 1.09 times higher than background values, respectively, with Cu being primary pollutant. geo-accumulation revealed accumulation degree order > Pb Cr Zn Cd Ni As. total at a moderate level, some areas having slight risk. indicated slightly polluted overall, regions experiencing pollution. Spatially, concentration southern part lake, As, consistent. industrial, agricultural, mineral sources. At same time, human activities mainly caused Hg, driven primarily by smelting natural activities.

Language: Английский

---

Climate change-induced urban flooding trend analysis and land use change: a case study of flood-prone Pathumthani Province, Thailand

Environment Development and Sustainability, Journal Year: 2024, Volume and Issue: unknown

Published: June 17, 2024

Language: Английский

---

Hydrogeochemical Characterization of Groundwater Located in an Intensive Agricultural Area: The Culiacan River Aquifer Case Study

Water Resources, Journal Year: 2024, Volume and Issue: 51(5), P. 844 - 859

Published: Sept. 25, 2024

Language: Английский

---

Quality Evaluation and Health Risk Assessment of Karst Groundwater in Southwest China

Published: Jan. 1, 2024

Groundwater in karst regions is of immense value due to its vital support for regional ecosystems and residents' livelihoods. However, it simultaneously threatened by multi-source pollution from agricultural non-point sources, industrial domestic point mining activities. This study focuses on the Guangxi China, which features typical topography, aiming thoroughly assess groundwater quality related health risks Guangxi, especially identifying impacts various key sources environment. A total 1,912 samples were collected, covering an area approximately 237,600 square kilometers. The spatial distribution pollutants was analyzed using Nemeroww index method Kriging interpolation, while multivariate statistical cluster analysis methods employed identify main types sources. Furthermore, based human risk assessment model U.S. Environmental Protection Agency (US EPA), a conducted pollutants. results revealed widespread heavy metal contamination Guangxi's groundwater, particularly with concentrations Mn, As, Al, Pb reaching up 9.4 mg/L, 2.483 37.95 4.761 respectively, significantly exceeding China's national Class III standards. Cluster indicated that activities are primary pollution. demonstrated these pose significant public health. aim this provide scientific basis protection environment other areas, formulation prevention control strategies, optimization urban land use layouts. Future research should focus advanced isotopic molecular biological techniques trace more precisely evaluate effectiveness measures.

Language: Английский

---