نتایج جستجو برای: mixed micellar liquid chromatography

تعداد نتایج: 488709  

Journal: :iranian journal of pharmaceutical research 0
arezoo asgari department of pharmacology and toxicology, school of pharmacy, zanjan university of medical sciences, zanjan, iran. farzad kobarfard department of medicinal chemistry, school of pharmacy, shahid beheshti university of medical sciences, tehran, iran. phytochemistry research center, shahid beheshti university of medical sciences, tehran, iran fariborz keyhanfar department of pharmacology, faculty of medicine, iran university of medical sciences, tehran, iran. shohreh mohebbi department of medicinal chemistry, school of pharmacy, zanjan university of medical sciences, zanjan, iran. maryam noubarani department of pharmacology and toxicology, faculty of pharmacy, zanjan university of medical sciences, zanjan, iran.

in previous studies, mebudipine, a dihydropyridine calcium channel blocker, showed a considerable potential to be used in cardiovascular diseases. the aim of the current study was to develop a valid method using reversed-phase high performance liquid chromatography coupled with electrospray ionization mass spectrometry to assay mebudipine in the human plasma. separation was achieved on a zorbax...

Journal: :Langmuir : the ACS journal of surfaces and colloids 2013
Lang G Chen Harry Bermudez

The aggregation and interfacial behavior of mixtures of anionic (sodium dodecylsulfate, SDS) and cationic (dodecylammonium bromide, DTAB) surfactants were investigated. A room-temperature ionic liquid (IL) was explored as a solvent for the SDS/DTAB system and compared to water. The critical micelle concentration (cmc) and composition in mixed micelles were determined for both solvents. Our expe...

Journal: :Physical review. E, Statistical, nonlinear, and soft matter physics 2002
Wei-Ren Chen Sow-Hsin Chen Francesco Mallamace

We made small-angle neutron scattering (SANS) study of a Pluronic L64 micellar system in aqueous solution at high polymer concentrations (wt %), 35%<c<53%, in a temperature range where a kinetic glass transition has been observed by photon correlation spectroscopy and zero shear viscosity measurements. We analyze SANS intensity distributions assuming that the micelles are spherical and interact...

Journal: :Molecules 2012
Ermelinda Bloise Luigi Carbone Giuseppe Colafemmina Lucia D'Accolti Selma Elaine Mazzetto Giuseppe Vasapollo Giuseppe Mele

Cardanol is a natural and renewable organic raw material obtained as the major chemical component by vacuum distillation of cashew nut shell liquid. In this work a new sustainable procedure for producing cardanol-based micellar nanodispersions having an embedded lipophilic porphyrin itself peripherally functionalized with cardanol substituents (porphyrin-cardanol hybrid) has been described for ...

2009
Rade Injac Nina Kočevar Borut Štrukelj

Antibiotics as additives in animal feedstuffs are forbidden in many countries in the world, but they are still abused. A micellar electrokinetic capillary chromatography method was performed at 25 C and 30 kV (under pressure 15 mbar) using 25 mmol dm phosphate buffer (pH = 8.0) containing 70 mmol dm sodium dodecysulfate (SDS) and 10 % (volume fraction) methanol as the background electrolyte fo...

Journal: :Journal of chromatography. A 2006
José F Huertas-Pérez Monsalud del Olmo Iruela Ana M García-Campaña Antonio González-Casado Antonio Sánchez-Navarro

In this paper, a multiresidue method for the analysis in soils of metribuzin (M) and its major conversion products, deaminometribuzin (DA), diketometribuzin (DK) and deaminodiketometribuzin (DADK) is developed. Considering the neutral and charged nature of the molecules, micellar electrokinetic chromatography (MEKC) is a very efficient method for the separation of these compounds, providing hig...

Journal: :Journal of Molecular Liquids 2022

Mixtures of chiral and achiral building blocks supramolecules exhibit interesting cooperative properties, as indicated by the nonlinear relationship between properties mole fraction blocks. However, composition dependence recognition capability spherical mixed micelles is poorly understood. This study hypothesized that phenomenon could be described regular solution theory reported to able descr...

Journal: :Analytical sciences : the international journal of the Japan Society for Analytical Chemistry 2013
Toshio Takayanagi Masaki Morimoto Tomoki Yabutani

Graphene and chemically modified graphenes were resolved by micellar electrokinetic chromatography (MEKC) using sodium dodecylbenzenesulfonate (SDBS) as a micelle matrix. Graphene was successfully dispersed in a micellar solution, and a consecutive and broad signal was obtained by the MEKC with a 20 mmol dm⁻³ aqueous SDBS solution for Graphene Nanoplatelets. Chemically oxidized graphene was les...

2013
Reza Hosseinzadeh Khatereh Khorsandi Syavash Hemmaty

Micelle/water mixed solutions of different surface active agents were studied for their effectiveness in the extraction of polyphenolic compounds from various varieties of apples from west Azerbaijan province in Iran. The total content of polyphenolic compound in fruit extracts were determined using ferrous tartrate and Folin-Ciocalteu assays methods and chromatographic methods and compared wit...

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