Laboratory experiments were performed to investigate high-temperature (100–150 °C) authigenic formation of clay coatings (smectites, chlorites) on clean feldspar and quartz surfaces. Artificial formation waters were used, with Mg-concentrations in the range of North Sea brines. Experiments wer...

Disinfection is the last treatment stage of a Drinking Water Treatment Plant (DWTP) and is carried out to maintain a residual concentration of disinfectant in the water distribution system. Chlorine dioxide (ClO2) is a widely used chemical employed for this purpose. The aim of this work was to e...

Addition order of both PAX (potassium amyl xanthate) and CMC (carboxymethyl cellulose) was investigated to separate pyrite from chlorite. The investigation included both flotation and adsorption tests. The flotation results showed that CMC can depress the flotation of chlorite but was found not ...

Chlorite dismutase (Cld) is a b-type heme containing enzyme that catalyzes the reduction of chlorite into chloride plus dioxygen. This enzyme has gained attention because it can be used in the development of bioremediation processes, biosensors, and controlled dioxygen production. In the present...

The interaction of the chlorite-based drug solution WF10 with human oxyhemoglobin and oxidized hemoglobin forms was investigated monitoring the corresponding spectral changes in heme states. The chlorite component of WF10 converts oxyhemoglobin into methemoglobin with a rate of 35.4 M−1s−1. Meth...

The clay minerals are good indicators of rock history because their wide transformation variations are sensitive to the formation conditions, like temperature (T), pressure (P) and fluid composition. Accordingly, many geothermometers and fluid-rock interaction indicators based on mineral assembl...

The Niujuan Ag-Au-Pb-Zn deposit is located in the northern Hebei Province of North China, which is hosted by Permian coarse-grained granite. The orebodies are controlled by a NE striking fault. Chloritization is the most extensive alteration with increasing alteration intensity from the distal t...

The thermal transformation (100–1100 °C) of two shales containing illite-chlorite (I/Ch), feldspars and quartz from La Cabañita quarry (Olavarria, Argentine) was studied by TG-DTA, XRD and FTIR. It included dehydration; dehydroxylation (350–800 °C) and the structural collapse of illite (950 ...

Aluminum, titanium and zirconium perfluoroheptanoate (PFH) were prepared by reaction of Al, Ti and Zr-alkoxides with perfluoroheptanoic acid (PFHA) in alcohol. All compounds were characterized by NMR spectroscopy, FTIR, MS and elemental analysis and used in polymerization of 3-glycidyloxypropylt...

The title compound MIL-131 (MIL stands for Material from Institut Lavoisier) was prepared hydrothermally (4 days, 473 K, autogenous pressure) in the presence of an organic base (N((CH2)2NH2)3). The structure of MIL-131 or TiIIITiIV(OH)F4(HPO4)·(PO4)·(N((CH2)2NH3)3) has been determined ab initi...

Acetylcholinesterase inhibitors produce diverse physiologic effects, but lethal exposure consistently produces respiratory failure due to neuromascular paralysis or depression of respiratory control centers in the medulla. Simultaneous measurement of gastrocnemius muscle contraction and efferent...

Series of zircon-type LixY(PO4)1-xF4x (0

Tin fluorophosphate glass (Pglass)/polymer composites have been widely investigated due to their applications in areas including: gas barrier, electronic packaging and fire retardant, etc. The compatibility between Pglass and polymer matrix is rather poor due to the large interfacial tension. No...

The sodium double tungstate NaCr(WO4)2 compound has been synthesized by the ceramic method and characterized by the X-ray diffraction (XRD) technique. The electrical conductivity and modulus characteristics of the system have been investigated in the temperature and the frequency range 592–670 ...

The lack of homogeneous and matrix-matched scheelite reference materials makes it difficult for quantitative determination of rare earth element (REE) concentrations in scheelite via LA-ICP-MS. In this work, three REE-doped tungstate single crystals (i.e., Dy:NaGd(WO4)2, Yb:NaGd(WO4)2, and Nd:Na...

Sorption of tungstate on boehmite (γ-AlOOH) is increased by co-sorption with Co2 + over the near-neutral pH range. Batch uptake experiments show up to a 3-fold increase in tungstate uptake over the range WO42 − = 50–1000 μmol/L compared to boehmite not treated with Co2 +. Desorption experimen...

Overuse and thus a constant presence of antibiotics leads to various environmental hazards and health risks. Thus, accurate sensors are required to determine their presence. In this work, we present a mass-sensitive sensor for the detection of rifampicin. We chose this molecule as it is an impor...

A hydrogel possessing interesting photochromic behaviors was developed by in situ ultraviolet (UV) irradiation–assisted polymerization of an aqueous solution of N-isopropylacrylamide monomer in the presence of cesium tungstate nanosheets. By this process, a hierarchical porous network structure...

Nd5.5WO11.25-δ, (Nd5/6La1/6)5.5WO11.25-δ and Nd5.5W0.5Mo0.5O11.25-δ mixed oxides have been prepared using mechanochemical activation (MA) of Nd2O3-WO3, Nd2O3-La2O3-WO3, Nd2O3-MoO3-WO3 mixtures in a high-power planetary ball mill. Genesis of these tungstates structural properties was studied b...

Tungstate enrichment in aquatic systems may cause negative environmental and health effects. This study addresses tungstate removal from aqueous solution by nanocrystalline iowaite, an iron-bearing layered double hydroxide, which has not been used for treatment of tungstate-rich waters so far. T...