In aqueous suspension, the affinity of many pesticides for smectites is influenced by the clay properties such as surface area, surface charge density and location, exchangeable cations, and hydration status of exchangeable cations in clay interlayers. The amount and the type of salts present in the aqueous phase influence clay quasicrystal structures and hydration status, which we hypothesize ...

Abstract. Clay mineral and stable isotope (C, O) data are reported from the upper Sinemurian (Lower Jurassic) of Cardigan Bay Basin (Llanbedr–Mochras Farm borehole, northwestern Wales) Paris (Montcornet northern France) to highlight prevailing environmental climatic conditions. In both basins, located at similar palaeolatitudes 30–35? N, clay assemblages comprise chlorite, illite, illite–smecti...

INTRODUCTION The precise trigger of podoconiosis - endemic non-filarial elephantiasis of the lower legs - is unknown. Epidemiological and ecological studies have linked the disease with barefoot exposure to red clay soils of volcanic origin. Histopathology investigations have demonstrated that silicon, aluminium, magnesium and iron are present in the lower limb lymph node macrophages of both pa...

Samples of The Miraflores Basalt sub-volcanic rocks (Miocene Late Formation) collected from different quarries on the Isthmus Panama and several samples excavation third set locks in New Channel were characterised this study. All studied had similar petrological mineralogical characteristics; however, substantially degrees alteration, which varied NW–SE direction. most altered areas located at ...

Abstract Purpose The close association of Fe-oxyhydroxides and clay minerals might influence the sorption properties these components. We aimed to study effect removing pedogenic on Cd, Cu, Pb, Zn by mineral particles in soils with contrasting pH. Methods Competitive batch experiments before after Fe-oxyhydroxide extraction were carried out together direct analysis metal individual ferrihydrite...

Abstract The complete characteristics knowledge of clay minerals is necessary in the evaluation studies hydrocarbon reservoirs. Ten samples taken from two wells a heterogeneous clastic gas reservoir formation NE Iran were selected to conduct transmission Fourier transform infrared spectroscopy (FTIR) tests for mineralogy studies. FTIR analysis showed that there clear signs all samples. wavenumb...

A photocatalytically active layer composed of TiO2 (Evonik P25) was successfully deposited on the macroporous (3 µm pore size) permeate side an asymmetric porous alumina membrane with aid a smectite (a synthetic hectorite, Sumecton SWF) by dipping membranes into aqueous suspension containing P25 and smectite. After heat treatment at 400 °C, coated hybrid adhered support enough to be applied for...

This study produces alteration mineral maps based on WorldView-3 (WV-3) data and field shortwave-infrared (SWIR) spectroscopy. It is supported by conventional analytical methods such as X-ray diffraction, fluorescence, electron probe micro analyzer an initial step for exploration in eastern Tsogttsetsii, Mongolia, where access limited. Distributions of advanced argillic minerals (alunite, dicki...

Abstract The facies and clay mineral study of clay/marl-rich levels from the Torrelapaja Formation (latest Hauterivian–early Barremian, NW Iberian Range, NE Spain) allowed to establish palaeoclimatic palaeoenvironmental conditions under they were generated. muddy pisoids contained therein two logs sampled studied by X-ray diffraction optical electron microscopy. A similar mineralogical upwards ...