The acidity constants of H(R —M P)~, where R —MP: = 4-nitrophenyl phosphate (NPhP2 ). phenyl phosphate (PhP2 ) and D-ribose 5'-m onophosphate (RibM P2 ). and the stability constants of the binary C u (R -M P ) com plexes w'ere determined by potentiometric pH titrations in aqueous solution and in 20. 30, 40 and 50% (v/v) dioxane-water mixtures. The solvent influence on the corresponding equilibr...

the dispersive liquid–liquid microextraction (dllme) method for determination of pb +2 and cd +2 ions in the environmental water samples was combined with inductively coupled plasma-atomic emission spectrometry (icp-aes). ammonium pyrrolidine dithiocarbamate (apdc), chloroform and ethanol were used as chelating agent, extraction solvent and disperser solvent, respectively. some effective parame...

The porous topology of Type II Porous Liquids (PLs), prepared using Noria-OEt as an empty molecular host dissolved in 15-crown-5 solvent, is investigated with 129Xe NMR Spectroscopy. Xenon parameters, such chemical shifts and T1 relaxation times, measured PLs solutions at various concentrations, are related to the intrinsic microporous structure material. experimental data interpreted on basis ...

A comparative study of ultrasound-assisted extraction (UAE) and hydro-distillation was performed for fast extraction of estragole from tarragon (Artemisia dracunculus L.) dried leaves. Several influential parameters of the UAE procedure in the extraction of estragole (type of solvent, extraction cycles, solvent to material ratio, irradiation time and particle size) were investigated an...

In this research, a rapid, reliable and selective dispersive liquid-liquid microextraction (DLLME) followed by direct injection of microdroplet to graphite furnace atomic absorption spectrometry (GF-AAS) method for the determination of ultra-trace amounts of Ag(I) was developed. Effect of the important experimental parameters on the extraction efficiency of Ag(I) was investigated using response...

In this research, in order to coating PETN particles, nano-pigment of redlitholrubine B 57:1 (NLR) was used in a surfactant environment of cetyltrimethylammonium bromide (CTAB) using solvent/none-solvent (water-acetone) method. Afterstructural studies of PETN-NLR nanocomposite by infrared (FT-IR) and field emissionscanning electron microscopy-Energy dispersive X-ray (FES...