نتایج جستجو برای: ion pair formation
تعداد نتایج: 825012 فیلتر نتایج به سال:
To explore how the ion-pair in a single salt molecule evolves with the addition of water, infrared (IR) spectra of complexes composed of NaCl and multiple water molecules have been recorded for the first time. The NaCl(H2O)n complexes were formed and probed in liquid helium nanodroplets, and IR spectra were recorded for n = 1 → 4. The spectra for n = 1, 2, and 3 are consistent with formation of...
phase together with a counterion. Schurig V (1984) Gas chromatographic separation of enantiomers on optically active stationary phases. Angewarde Chemie International Edition English 23: 747}765. Schurig V (1994) Enantiomer separation by gas chromatography on chiral stationary phases. Journal of Chromatography 666: 111}129. Schurig V and Nowotny H-P (1990) Gas chromatographic separation of enan...
Clonidine hydrochloride is an antihypertensive agent used for migraine prophylaxis, attention deficit hyperactivity disorder, menopausal flushing and Tourette syndrome. The quantity of the active substance in pharmaceutical preparations must be within specific limits, in agreement with the respective label claim. Therefore, the aim of this study was to establish the conditions for two spectroph...
Clonidine hydrochloride is an antihypertensive agent used for migraine prophylaxis, attention deficit hyperactivity disorder, menopausal flushing and Tourette syndrome. The quantity of the active substance in pharmaceutical preparations must be within specific limits, in agreement with the respective label claim. Therefore, the aim of this study was to establish the conditions for two spectroph...
A simple extractive spectrophotometric method has been developed for the estimation of miconazole nitratein both pure and pharmaceutical preparation. The method is based on the formation of ion-pair complex of thedrug with acidic dye bromothymol blue (BTB) in acidic condition, followed by its extraction in organic solvent(chloroform). The absorbance was measured against the corresponding blank....
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