A study of the structures of hydrated and anhydrous lanthanide acetates by X-ray diffraction, i.r. spectra, and absorption spectra demonstrates that there are three separate structures for hydrated lanthanide acetates and four structures for anhydrous acetates. The site symmetry of the lanthanid...

Hexagonal-phase NaYF4:Yb3+,Er3+ upconversion nanoparticles (UCNPs) with a uniform size distribution were synthesized using rare-earth acetates as precursors. The effects of reaction temperature and time on the phase transition process of the UCNPs were systematically studied. Based on the evolut...

The molecular structure of Y(CH3CO2)3·4H2O has been determined by X-ray diffraction. The crystals are triclinic with space group P1̄ (a=8.867, b=9.368, c=10.587 Å, α=90.30, β=115.65, γ=119.11°). The molecule has a dimeric structure where the yttrium atoms have a ninefold coordination. Yttri...

Analysis of high-resolution absorption and emission spectra of europium(III) triacetate tetrahydrate (EuAC) crystal enabled assignment of 130 experimental crystal-field levels of the 4f6 configuration between 0 and 35,050 cm−1. These experimentally determined levels were simulated using a semi-e...

Kinetics of the thermal decomposition of un-irradiated (pristine) and pre-γ-irradiated hydrated gadolinium acetate was studied within the temperature range (603–623 K) and in air using isothermal and dynamics thermogravimetric techniques. The data were analyzed using various solid-state reacti...

In this study, characterization of uytenbogaardtite and laboratory in situ microzone leaching experiments were conducted in which the leaching characteristics of uytenbogaardtite and native gold were compared. The results show that uytenbogaardtite is more refractory than native gold. For a sodi...

Hexamminecobalt(III)-tricarbonatocobaltate(III) was prepared, and its bicarbonate solution was standardized against ferrous ammonium sulfate using Ferroin indicator. The Co solution was used as an oxidimetric reagent for the determination of organic systems.Hydroquinone as a reversible system un...

The possibilities of utilization of the hexamminecobalt(III) tricarbonatocobaltate(III) complex for potentiometric determination of some substances are discussed. The reaction scheme for this reagent is proposed for acidic media (the “generation” of Co3+). A microdetermination of iodide has be...

The crystal structures of chloro(trimethylphosphine)gold(I), chloro(tri-ipropylphosphine)gold(I) and bis(trimethylphosphine)gold(I) chloride · 2CHCl3 have been determined by single crystal X-ray diffraction studies. The monomeric units of the molecular complexes (Me3P)AuCl (1) and (iPr3P)AuCl (...

The electron oscillation of borate complex anions in the borate solution was a very interesting peculiar phenomenon in the study of Solution Chemistry up to now. By means of borate complex anions addition, reacting system inertion and the electrons addition, based on the peculiar contribution of...

A fast, selective, and sensitive GC-MS method has been developed and validated for the determination of boric acid in the drinking water by derivatization with triethanolamine. This analytic strategy successfully converts the inorganic, nonvolatile boric acid B(OH)3 present in the drinking water...

The aim of this study was to focus on the reduction of chiral selector concentration, sulfated-β-cyclodextrin, in an attempt decrease the running costs associated with separating cetirizine enantiomers by capillary electrophoresis. The decrease in the concentration of chiral selector was achiev...

The synthesis and spetroscopic properties of two isomers of the complex [(bispictn)Cr(OH)]24+ where bispictn = N,N′-bis(2-pyridylmethyl)-1,3-propanediamine, C15H20N4, are described. The crystal structure of the perchlorate salt trihydrate of the violet isomer has been determined from 3-dimensio...

Various spectral methods (IR absorption and reflectance-absorption, Raman scattering and UV–Vis absorption) were used for investigations of a family of copper phthalocyanines in non-polarized and polarized light. The spectra of bulk and thin film samples were compared and discussed; an orientat...

In this study, we demonstrated that Fe3O4/PMS system in the presence of hydroxylamine (HA) was significantly efficient for atrazine degradation under the near-neutral pH (5.0–6.8) (without buffer). The degradation rate constant of atrazine in Fe3O4/PMS/HA system (0.152 min−1) was 38 times of th...

The separation of Cr(III) from the polymetallic leaching solution is a typical problem encountered during the recycling of electroplating sludge. In this paper, a novel method was proposed to recover Cr(III) and Fe(II) synchronously by forming the Cr(III)-Fe(III) coprecipitates on the surface of...

This study developed a cost-effective and eco-friendly method by coupling plant extracts (take green tea for example) and Fe(III) to reduce Cr(VI) and precipitate Cr(III). At acidic pH, 1.43 mM Fe(III) combined with 1.33 g/L green tea extracts could reduce 93% of Cr(VI) in 180 min, which was muc...

The paper presents a method to synthesize α-Fe, γ-Fe, magnetite and hematite through solventless thermal decomposition technique using an organo-metallic compound iron(III)citrate in two different atmospheres (N2 and O2) at different temperatures and the characteristics of these products. The ...

We investigated the effect of Fe(III)-citrate complexes on the photodegradation of Carbamazepine (CBZ) upon 365 nm irradiation in aqueous solution. A preliminary study of a {CBZ/Fe(III)-citrate} mixture in the dark and at room temperature showed no evidence of reaction. CBZ degradation efficienc...

An ion-imprinted polymer (IIP) was synthesized by radical copolymerization for use in the removal of trace Fe(III) ions from Cr(III)-containing solutions. During the synthesis process, Fe(III) ions, acrylic acid and ethylene glycol dimethacrylate were employed as the template ions, functional mo...