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Article
Open AccessFormation and evolution of secondary phases and surface altered layers during borosilicate glass corrosion in pore water
The emergent secondary phases and surface altered layer (SAL) during the aqueous corrosion of borosilicate glass have a great impact on its chemical durability. However, the formation and evolution of these st...
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Article
Assessing the reactivity of Fe(II) sorbed on smectite surface towards U(VI) reduction
The reactivity of Fe(II) sorbed on clay edges towards U(VI) reduction is investigated at pH 6.0 using Fe-free synthetic montmorillonite (MONT), Fe-poor natural montmorillonite (Fe-MONT) and Fe-rich natural non...
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Article
Mössbauer spectrometry insights into the redox reactivity of Fe-bearing phases in the environment
Rates and mechanisms of important reactions in the cycling of electrons via the geochemical transformations of iron have been identified using Mössbauer spectrometry. The cycling of iron through various reserv...
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Article
Open AccessGentamicin-Montmorillonite Intercalation Compounds as an Active Component of Hydroxypropylmethylcellulose Bionanocomposite Films with Antimicrobial Properties
The present study introduces an overview of gentamicin-clay mineral systems for applications in biomedicine and then focuses on the development of a series of gentamicin/clay hybrid materials to be used as the...
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Article
Open AccessNew insights on the biomineralisation process develo** in human lungs around inhaled asbestos fibres
Once penetrated into the lungs of exposed people, asbestos induces an in vivo biomineralisation process that leads to the formation of a ferruginous coating embedding the fibres. The ensemble of the fibre and the...
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Article
Origin of arsenic in Late Pleistocene to Holocene sediments in the Nawalparasi district (Terai, Nepal)
A sedimentological and geochemical study was carried out to explore the origin of arsenic contamination in sediments in Nawalparasi district, in the western Terai of Nepal. The investigation tools include majo...
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Article
Kinetics of FeSe2 oxidation by ferric iron and its reactivity compared with FeS2
The mobility and bioavailability of selenium is a major health and environmental issue and a main concern for geological disposal of high-level radioactive waste. Chemically and/or microbially mediated oxidati...
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Article
Natural wetland emissions of methylated trace elements
Natural wetlands are well known for their significant methane emissions. However, trace element emissions via biomethylation and subsequent volatilization from pristine wetlands are virtually unstudied, even t...
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Article
Electrical resistivity investigation of the arsenic affected alluvial aquifers in West Bengal, India: usefulness in identifying the areas of low and high groundwater arsenic
This study aims at finding out possible relation between lithology and spatial pattern of dissolved arsenic (As) in groundwater around Chakdaha municipality, West Bengal, India. Satellite image, coupled with e...
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Article
Rising arsenic risk?
Millions of people in southern Asia rely on arsenic-contaminated groundwater to live. Massive water withdrawals through wells may be increasing the problem by drawing arsenic-mobilizing substances into shallow...
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Article
Selenium environmental cycling and bioavailability: a structural chemist point of view
Selenium is usually known as the ‘double-edged sword element’ for its dual toxic and beneficial character to health. Since the pioneer works by Schwarz and Foltz on the relationships between selenium deficienc...
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Chapter
Pollutant Speciation in Water and Related Environmental Treatment Issues
Neutron scattering and complementary techniques are extremely useful in the investigation of pollutant speciation in water and aqueous environments, as is shown in this chapter for both heavy metal and organic...
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Article
Cartilage tympanoplasty: postoperative functional results
We evaluated auditory performance following cartilage tympanoplasty for the management of tympanic membrane retraction pockets. We performed a 230-patient retrospective study over a 10-year period (1990–2000) ...
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Article
Open AccessComparison of dissolved and particulate arsenic distributions in shallow aquifers of Chakdaha, India, and Araihazar, Bangladesh
The origin of the spatial variability of dissolved As concentrations in shallow aquifers of the Bengal Basin remains poorly understood. To address this, we compare here transects of simultaneously-collected gr...
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Article
Open AccessDecoupling of arsenic and iron release from ferrihydrite suspension under reducing conditions: a biogeochemical model
High levels of arsenic in groundwater and drinking water are a major health problem. Although the processes controlling the release of As are still not well known, the reductive dissolution of As-rich Fe oxyhy...
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Article
Superior approach to the inferior laryngeal nerve in thyroid surgery: anatomy, surgical technique and indications
To describe the anatomical bases of the surgical access to the higher part of the thyroid lobe, with first location of the inferior laryngeal nerve at its laryngeal penetration, to discuss the advantages and d...
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Article
A spectroscopic and voltammetric study of the pH-dependent Cu(II) coordination to the peptide GGGTH: relevance to the fifth Cu(II) site in the prion protein
The GGGTH sequence has been proposed to be the minimal sequence involved in the binding of a fifth Cu(II) ion in addition to the octarepeat region of the prion protein (PrP) which binds four Cu(II) ions. Coord...
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Article
Experimental Evidence for Ca-Chloride Ion Pairs in the Interlayer of Montmorillonite. an XRD Profile Modeling Approach
Montmorillonite was equilibrated with high normality Cl− solutions to assess the possible presence of MeCl+ ion pairs in smectite interlayers suggested by chemical modeling of cation exchange experimental studies...
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Article
Fe(II)-Na(I)-Ca(II) Cation Exchange on Montmorillonite in Chloride Medium: Evidence for Preferential Clay Adsorption of Chloride – Metal Ion Pairs in Seawater
Fe(II)–Ca(II), Fe(II)–Na(I), and Fe(II)–Ca(II)–Na(I) exchange experiments on montmorillonite were performed in chloride background. These experiments show the possible sorption of Fe2+ and FeCl+ ion pairs in exch...
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Article
Methods for Performing Atomic Force Microscopy Imaging of Clay Minerals in Aqueous Solutions
Three methods were developed that allow for the imaging of any clay mineral in aqueous solutions with atomic force microscopy (AFM). The methods involve fixing the particles onto special substrates that do not...
