Analysis of Ion-association Equilibrium of Precipitable Dipicrylaminate Ion in Aqueous Solution by Capillary Zone Electrophoresis
نویسندگان
چکیده
منابع مشابه
Analysis of ion-association equilibrium of precipitable dipicrylaminate ion in aqueous solution by capillary zone electrophoresis.
The ion-association equilibrium of the dipicrylaminate ion (DPA(-)) was investigated in an aqueous solution with alkali metal ions and with its 18-crown-6 ether complexes as pairing cations by capillary zone electrophoresis (CZE). Although DPA(-) is precipitable with the pairing cations of K(+) and Cs(+) in a homogenous aqueous solution, a low concentration of DPA(-) below its solubility suppre...
متن کاملAnalysis of ion-association reaction in aqueous solution and its utilization by capillary zone electrophoresis.
Electrophoretic migration of analytes in capillary zone electrophoresis (CZE) reflects the dissolved status of analytes in solution, and the electrophoretic mobility is controlled to develop the resolution among analytes by adding a "modifier" to the migrating solution. Such addition of modifier is essentially the utilization of molecular interactions. Precise measurement of electrophoretic mob...
متن کاملEquilibrium analysis of reactions of metal-pyridylazoresorcinolato chelates with quaternary ammonium ion, nonionic surfactant and polyethylene glycol in aqueous solution by capillary zone electrophoresis.
The resolutions of metal-4-(2-pyridylazo)resorcinol chelates by capillary zone electrophoresis (CZE) were investigated in the presence of some interacting reagents; also, equilibrium reactions between the chelates and the interacting reagents were analyzed in an aqueous solution. Among nine metal chelates formed in aqueous solution, the chelates of VV, FeII, CoIII, NiII, and CuII were resolved ...
متن کاملHair analysis for illicit drugs by using capillary zone electrophoresis-electrospray ionization-ion trap mass spectrometry.
In forensic toxicology, hair analysis has become a well established analytical strategy to investigate retrospectively drug abuse histories. In this field, gas chromatography-mass spectrometry and high-performance liquid chromatography-mass spectrometry are currently used, often after preliminary screening with immunoassays. However, on the basis of previous applications to pharmaceutical analy...
متن کاملAnalysis of Chemical Equilibria in Aqueous Solution Related with Separation Development Using Capillary Zone Electrophoresis
Capillary zone electrophoresis (CZE) has become a popular technique for the analysis of ionic substances. The separation mechanism is based on the differences in electrophoretic mobility of analyte ions, as well as on the electroosmotic flow. Although the separation efficiency in CZE is amazingly high, various types of interacting reagents are often used to control the electrophoretic mobility ...
متن کاملذخیره در منابع من
با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید
ژورنال
عنوان ژورنال: Analytical Sciences
سال: 2014
ISSN: 0910-6340,1348-2246
DOI: 10.2116/analsci.30.919