نتایج جستجو برای: conductimetry

تعداد نتایج: 31  

Journal: :Journal of pharmaceutical research international 2023

The use of colloidal particles to prepare and stabilize emulsions, known as "Pickering emulsions “, has aroused growing interest in recent years. Pickering Ramsden demonstrated at the beginning last century feasibility surfactant-free presence these is called Emulsions". This concept stabilized by solid experiencing renewed nowadays given many advantages it offers good stability, environmental ...

Journal: :Journal of Molecular Liquids 2022

Pyrrole-functionalized imidazolium surfactants PyCnMImBr with different alkyl chain lengths (n = 8, 10, 12) were synthesized and their aggregation properties in water investigated by tensiometry conductimetry. These studies show that present lower critical micellar concentration than non-functionalized analogues due to (i) an increased hydrophobicity resulting from the extension of length upon ...

Journal: :Chemical Engineering Journal 2022

In this study, a selective and specific sorbent for radium extraction was developed the first time using ion-imprinted polymer technology. A novel original approach used in order to screen best synthesis conditions. After identifying monomer candidates, porogen, complexation from electrospray ionization mass spectrometry experiments, solubility tests, conductimetry five polymers (IIPs) were syn...

Journal: :Compounds 2023

The condensation product of the reaction between aniline and salicylaldehyde was a 2-(2-hydroxybenzylidinemine)—aniline Schiff base bidentate ligand (L). L used to generate complexes by interacting with metal ions lanthanum(III), zirconium(IV), yttrium(III), copper(II), in addition cobalt(II). Various physicochemical techniques were utilized analyze synthesized its chelates, including elemental...

پایان نامه :وزارت علوم، تحقیقات و فناوری - دانشگاه پیام نور - دانشگاه پیام نور استان زنجان - دانشگاه پیام نور مرکز ابهر - دانشکده علوم 1389

چکیده ندارد.

2012
Stéphane Mabic Ichiro Kano

Due to the increased sensitivity of instrumentation, analytical detection limits can now reach ng/L (ppt) levels on a routine basis, and even pg/L (ppq) levels under certain conditions. Confidence in the data recorded for these trace analyses relies on the control of several conditions and parameters. Besides the technical performance of instruments, careful sample handling and reagent purity a...

پایان نامه :وزارت علوم، تحقیقات و فناوری - دانشگاه پیام نور 1385

چکیده ندارد.

Journal: :Dalton transactions 2012
Laila Benhamou Aurore Thibon Lydia Brelot Mohammed Lachkar Dominique Mandon

The complexation of Fe(SO(3)CF(3))(2) to the series of fluoro α-substituted tris-(2-aminomethylpyridyl)amine tripods F(1-3)TPA yields the triflato F(1-3)TPAFe(SO(3)CF(3))(2) complexes which have firstly been characterized in solution. As expected, bis-acetonitrile charged species are present in CH(3)CN, and neutral bis-triflato complexes in CH(2)Cl(2). The X-ray diffraction analyses of F(1)TPAF...

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