Risk assessment of potentially toxic elements in intermittent rivers, “fiumara”, flowing in the Gulf of Milazzo (Sicily, Italy)

Environmental Earth Sciences, Journal Year: 2024, Volume and Issue: 83(10)

Published: May 1, 2024

Language: Английский

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A Review on Applications of Time-Lapse Electrical Resistivity Tomography Over the Last 30 Years : Perspectives for Mining Waste Monitoring

Surveys in Geophysics, Journal Year: 2022, Volume and Issue: 43(6), P. 1699 - 1759

Published: Aug. 12, 2022

Abstract Mining operations generate large amounts of wastes which are usually stored into large-scale storage facilities pose major environmental concerns and must be properly monitored to manage the risk catastrophic failures also control generation contaminated mine drainage. In this context, non-invasive monitoring techniques such as time-lapse electrical resistivity tomography (TL-ERT) promising since they provide subsurface information that complements surface observations (walkover, aerial photogrammetry or remote sensing) traditional tools, often sample a tiny proportion mining waste facilities. The purposes review follows: (i) understand current state research on TL-ERT for various applications; (ii) create reference library future geoelectrical waste; (iii) identify areas development needs issue according our experience. This describes theoretical basis provides an overview applications developments over last 30 years from database 650 case studies, not limited (e.g., landslide, permafrost). particular, focuses ERT characterization 150 studies is used long-term autonomous geotechnical geochemical stability wastes. Potential challenges could emerge broader adoption discussed. considers recent advances in instrumentation, data acquisition, processing interpretation draws perspectives avenues help improve design accuracy geoelectric programs

Language: Английский

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Editorial for the Special Issue: Multispectral and Hyperspectral Remote Sensing Data for Mineral Exploration and Environmental Monitoring of Mined Areas

Remote Sensing, Journal Year: 2021, Volume and Issue: 13(3), P. 519 - 519

Published: Feb. 1, 2021

In recent decades, multispectral and hyperspectral remote sensing data provide unprecedented opportunities for the initial stages of mineral exploration environmental hazard monitoring [...]

Language: Английский

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Soil Water Content Prediction Using Electrical Resistivity Tomography (ERT) in Mediterranean Tree Orchard Soils

Sensors, Journal Year: 2022, Volume and Issue: 22(4), P. 1365 - 1365

Published: Feb. 10, 2022

Water scarcity in arid and semiarid regions poses problems for agricultural systems, awakening special interest the development of deficit irrigation strategies to improve water conservation. Toward this purpose, farmers technicians must monitor soil soluble nutrient contents real time using simple, rapid economical techniques through space. Thus, study aimed achieve following: (i) create a model that predicts profiles electrical resistivity tomography (ERT); (ii) apply different woody crops under regimes (full regulated (RDI)) assess efficiency model. Simple nonlinear regression analysis was carried out on content ion data as dependent variable. A predictive calibrated validated with datasets based exponential decay three-parameter equation. Nonetheless, no accurate achieved predict any nutrient. Electrical images were replaced by after application all studied crops. They showed RDI situations, became drier at depth while plant roots seemed uptake more water, contributing reductions creation desiccation bulbs. Therefore, use ERT combined could be sustainable strategy evolution irrigated fields, facilitating land management.

Language: Английский

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Spatial distribution and pollution evaluation in dry riverbeds affected by mine tailings

Environmental Geochemistry and Health, Journal Year: 2023, Volume and Issue: 45(12), P. 9157 - 9173

Published: Jan. 16, 2023

Abstract The objective of this study was to evaluate the level pollution, sources and potential risk heavy metals (Zn, Cu, Mn, Cd, Cr, Ni, Fe Pb) arsenic (As) in four dry riverbeds affected by mine tailing, which drain into one biggest coastal lagoon Europe (Mar Menor). El Beal, La Carrasquilla, Las Matildes Ponce sediments were sampled along its course (20, 18, 13, 19 samples collected, respectively), total/soluble metal(loid)s, water soluble ions, nitrogen, organic/inorganic carbon contents analyzed. Spatial distribution, principal component analysis (PCA), hierarchical cluster (HCA), contamination factor (Cf), pollution load index (PLI) ecological (RI) used identify possible metal(loid)s assess sediment status. results showed that mean total concentrations As, Zn Pb exceeded natural background levels area, with highest values located close mining areas. Correlation identified Cd associated mainly anthropogenic activities for all riverbeds, while Cr Ni come from parent. PLI graded as contaminated metals, RI manifested 100% Carrasquilla had a significantly high risk. Therefore, suggests wastes are main source metal(loids) can be design actions measures reduce environmental impact Mar Menor lagoon.

Language: Английский

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Synthesis of zero valent copper/iron nanoparticles using Piper betle leaves for the removal of pharmaceutical contaminant atorvastatin

Environmental Research, Journal Year: 2024, Volume and Issue: 257, P. 119334 - 119334

Published: June 3, 2024

Language: Английский

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Potentially Toxic Elements (PTEs) Dispersion in Alluvial Deposits from Abandoned Mining Sites

Minerals, Journal Year: 2024, Volume and Issue: 14(4), P. 340 - 340

Published: March 26, 2024

In the watersheds of abandoned mining districts, it is common to find remains former facilities and waste dams on stream banks slopes—a situation that results in transport accumulation metal(loid)s alluvial deposits. To analyze this problem, an area district Linares–La Carolina (southern Spain) was selected evaluate contents distributions Ag, As, Ba, Cu, Pb as potentially toxic elements (PTEs) found mineral paragenesis. Specifically, study focused Siles Stream, which runs through a sector where underground for exploitation galena veins generated abundant wastes, mainly rock tailings. Thirty-four sediment samples from bed Stream two Guadiel River, tributary, were analyzed. Floodplain sediments sampled at middle lower reaches (11 samples), well riverine soils developed mouth (22 samples). The analyzed presented high levels PTEs, most cases with values much higher than generic reference established by European regional legislation PTEs soils. case Pb, main metal mined district, up 27,074 mg·kg−1 observed sediments. Very concentrations also appeared floodplain sediments, maximum course stream, concentration reached 43,692 mg·kg−1. With respect river bed, content 699 before confluence 2537 downstream, clearly reflects influence contributions Stream. enrichment factors (EFs) show present severe very anthropogenic Pb. geoaccumulation index (Igeo) indicates entire basin extremely polluted As Ag are added stream. potential ecological risk (RI) pollution load (PLI) based contamination factor (CF) suggested loads far exceeded values. Selective chemical extraction methods used assess bioavailability these soil samples. showed exchangeable fraction, poses significant human health risks.

Language: Английский

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Major, Trace and Rare Earth Elements Geochemistry of Bottom Sediments in the Retiro Baixo Reservoir after the B1 Tailings Dam Rupture, Paraopeba River (Brazil)

Minerals, Journal Year: 2024, Volume and Issue: 14(6), P. 621 - 621

Published: June 18, 2024

The rupture of an iron mining tailing dam in Brumadinho, Brazil, released around 10 million cubic meters tailings, which 1.6 Mm3 reached the Paraopeba River. In this work, a total 30 samples from three bottom sediment cores were collected lower course River basin and analyzed for major, trace rare earth elements by ICP-OES ICP-MS. sediments presented range compositions with different weathering histories, overall marked depleted Ca2+, Na+ K+ compared average UCC, PAAS NASC some advanced trends. fractionation pattern characterized continuous depletion light REEs La to Sm regular decreased distribution heavy Gd Yb, Co/Th vs. La/Sc diagram indicates predominant intermediate source. upper highest contents REEs, probably due higher presence aluminum oxides hydroxides, can be related more weathering. Al, Cu, Ni, V, Zn, Co, Mn, Ti, Fe Si concentrations CF, EF Igeo index values varied across core samples, demonstrating that there long periods geogenic or anthropogenic contributions.

Language: Английский

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Assessing an Abandoned Pyrite Cinder Deposit in Southeast Spain with Electrical Resistivity Tomography: A Case Study

Minerals, Journal Year: 2024, Volume and Issue: 14(7), P. 652 - 652

Published: June 26, 2024

Industrial activities have historically generated significant quantities of by-products, including pyrite cinders, a residue produced during the synthesis sulphuric acid. This study presents multidisciplinary approach to characterise an abandoned cinder deposit. Combining geophysical (electrical resistivity tomography—ERT), geochemical, and statistical methods, we assess physicochemical properties deposit its environmental implications. Our findings reveal presence heavy metals, with lead (7017.5 mg.kg−1) being most concentrated element on surface deposit, exceeding local legal thresholds by more than 163 times, posing risks inhibiting vegetation growth. Subsurface characterisation indicates decreasing concentration trend metals depth, alongside variations in pH electrical conductivity. Clustering analysis identifies groups similar behaviours between resistivity, abundant other variables, providing valuable insights into complex interplay within underscores importance integrated approaches assessing managing hazardous waste sites, implications for remediation strategies.

Language: Английский

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Trace metal accumulation through the environment and wildlife at two derelict lead mines in Wales

Heliyon, Journal Year: 2024, Volume and Issue: 10(14), P. e34265 - e34265

Published: July 1, 2024

Trace metal pollution is globally widespread, largely resulting from human activities. Due to the persistence and high toxicity of trace metals, these pollutants can have serious effects across ecosystems. However, few studies directly assessed presence impact ecosystems, specifically multiple environmental sources animal taxa. This study was designed assess health impacts by assessing its extent possible transfer into wildlife in areas surrounding two abandoned metalliferous mine complexes Wales UK. Water, sediment, soil at sites downstream had notably elevated concentrations Pb, Zn, and, a lesser extent, Cd Cu, when compared nearby control sites. These were mirrored body burdens aquatic invertebrates collected contaminated streams both at, of, mines. Wood mice appeared be able regulate their Zn Cu tissue concentrations, but, wood site, they significantly particularly, detected kidney, liver, bone samples. The Pb found tissues correlated strongly with local (kidney: ρ = 0.690; liver: 0.668, bone: 0.649), potentially indicative between 10 % 82 rodents sampled downstream. environment common prey species (invertebrates rodents) indicates that far-reaching, ecosystem-wide long after polluting activity has ceased, far beyond originating site pollution.

Language: Английский

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