γ-aminobutyric acid (GABA) is a key physiologically active molecule in organisms. Separation of glutamate from its decarboxylated product GABA has been vigorously pursued. The interaction between these two compounds severely hindered their disassociation. Herein, we present a new strategy, term...

Metal complexes of Zn(II), Cd(II), Ni(II), Cu(II), Fe(III), Co(II), Mn(II) Hg(II), and Ag(I) have been synthesized from Schiff base ligand, prepared by the condensation of 3,4-(methylenedioxy)aniline and 5-bromo salicylaldehyde. All the compounds have been characterized by using elemental analys...

Concentrations of reduced glutathione (GSH) and oxidized glutathione (GSSG) and 4 trace metals (Ni, Cu, Mn, Zn) were measured in livers from rats treated with sodium diethyldithiocarbamate (DDC, 0.67 or 1.33 mmol/ kg, i.m.) and NiCl2 (0.25 or 0.50 mmol/kg, s.c.), singly or in combination. In rat...

Theoretical and experimental bands have been assigned for the Fourier Transform Infrared spectrum (FT-IR) and FT-Raman of the bis(diethydithiocarbamate)Co(II) complex, [Co(DDTC)2]. The calculations have been based on the DFT/B3LYP method, second derivative spectrum and band deconvolution analysi...

An enthalpimetric method for the determination of diethyldithiocarbamate (DDTC) based on the catalysis of the iodine—azide reaction is proposed. The behaviour of those metal ions which inhibit the catalytic activity of DDTC by complex formation is also studied, and a simple and rapid procedure ...

A column packed with a 1:1 mixture of 5% OV-101 and 5% QF-1 on Gas-Chrom Q was used for the gas-liquid chromatographic assay of zinc, copper and nickel diethyldithiocarbamates in artificial mixtures and in samples of natural origin. The quantitative determination of complexes in artificial mixtu...

The title complexes were prepared and used as stationary phases in complexation GC for the separation of phenols; the best separation for chlorophenols was achieved with copper diethyldithiocarbamate.

Room-temperature ionic liquid in combination with sodium diethyldithiocarbamate (DDTC) was used to synergetically improve the chemical vapor generation (CVG) of nickel. Volatile species of nickel were effectively generated through reduction of acidified analyte solution with KBH4 in the presence...

The effects of Cu2+ ion concentration and temperature on the cementation rate of copper from copper sulphate on zinc and the effect of additives of the organic compound “sodium diethyldithiocarbamate” (NaDDC) were studied. It was noticed that the cementation increases significantly by increasi...

A new and green deep eutectic solvent based liquid phase microextraction procedure (DES-LPME) has been developed for separation and preconcentration of nickel prior to micro-sampling flame atomic absorption spectrometric determination (MS-FAAS). Ni(II) was complexed with sodium diethyldithiocarb...

The metabolism and excretion of orally administered or injected n-butyl 4-hydroxy-3,5-di[25I]iodobenzoate has been studied in man, the rhesus, cynomolgus, squirrel and capuchin monkeys and the rat and rabbit. These species excreted most (about 80 per cent of dose) of the radioactivity in the uri...

Algal biomass is a proposed feedstock for sustainable production of petroleum displacing commodities. However, production of 10% of US demand for liquid transportation fuel from algae would require a 60–150% increase over current agricultural demand for phosphorus fertilizers. Without efforts t...

Fluoride phosphate/fluorophosphate (FP) glasses form an intriguing material's basis for diverse applications in optics, photonics and energy storage. The optimization of the materials' properties with regard to the application envisioned demands an understanding of the key concepts des...

Although the conversion of progesterone to 16 ∝-hydroxyprogesterone has been reported in human endocrine target organs (2–7), information of 16-hydroxylase activity on the ovarian tissue is quite limited. Warren and Salhanick (8) observed formation of 16 ∝-hydroxyprogesterone on incubation st...

In the cyanidation of copper–gold ores, the presence of copper minerals can lead to soluble gold losses, the production of weak acid dissociable (WAD) cyanide, as well as a number of operational challenges in CIP/CIL circuits with regard to competitive adsorption, and subsequent difficulties as...

Cyanide plays a critical role in origin of life hypotheses that have received strong experimental support from cyanide-driven synthesis of amino acids, nucleotides, and lipids. However, relatively high cyanide concentrations are needed. Such cyanide could have been supplied by reaction networks ...

The presence of cyanide soluble copper in the cyanidation of gold-copper ores and concentrates significantly increases the cyanide consumption in order to achieve sufficient gold recovery. In addition, cyanide recovery or cyanide detoxification/destruction processes are also required which adds ...

In the cyanidation process, copper–gold deposits containing significant amounts of cyanide soluble copper can lead to high cyanide consumption with low gold extraction. The significant levels of weak acid dissociable (WAD) cyanide must then be destroyed prior to tailings disposal. This increase...

A simple and green method for the determination of cyanide ions (CN−) has been developed which is based on copper nanoparticles (CuNPs) acting as a fluorescent probe in aqueous solutions. In this study, fluorescent CuNPs have been synthesized in the presence of ascorbic acid which acts both as a...

The adsorption of copper ions and the formation of a copper sulfide phase on pyrite surfaces are of vital importance to alter the surface property of pyrite and determine its fate either to be rejected in the flotation of polymetallic sulfide ores or to be recovered in the flotation of pyritic g...