نتایج جستجو برای: liquid phase micro extraction

تعداد نتایج: 1024711  

In this study, an easy, fast, sensitive and accurate technique has been described for extraction and quantitative analysis of fluoxetine and propafenone using off-line coupling of ionic liquid–based dispersive liquid–liquid micro-extraction with high performance liquid chromatography. The effective extraction variables including: the ionic liquid volume, the type and volume of dispersive solven...

2008
Thiraporn Charoenraks Masaaki Tabata

In this research, the new separation method based on micro solvent cluster extraction and preferential solvation has been described. A proposed separation method using aqueous mixed solvents of organic solvents (acetonitrile, 1-propanol, 2-propanol and 1,1,1,3,3,3-hexafluoro-2-propanol) or ionic liquids and an open tubular capillary has been separated the model compounds (2-naphthol, 4-nitroani...

Journal: :Analytical sciences : the international journal of the Japan Society for Analytical Chemistry 2013
Ali A Ensafi Elaheh Khoddami Behzad Rezaei

In this paper, we describe a new combination method based on polytetrafluorethylene (PTFE) film-based liquid three-phase micro extraction coupled with differential pulse voltammetry (DPV) for the micro extraction and quantification of atorvastatin calcium (ATC) at the ultra-trace level. Different factors affecting the liquid-three phases micro extraction of atorvastatin calcium, including organ...

Background: Imatinib is an antineoplastic agent acting as a tyrosine kinase inhibitor to treat cancer such as lymphoblastic leukemia. The dosage of the anticancer drugs plays a critical role in the survival of the patients. For this reason, the patient's plasma and urine samples should be monitored to obtain the necessary information regarding the toxicity of the drug. In this study, the applic...

A simple and efficient homogenous liquid-liquid extraction method performed in a narrow tube combined with dispersive liquid-liquid microextraction method has been presented for the simultaneous determination of two antiepileptic drugs in urine followed by gas chromatography with flame ionization detection. In this method, a mixture of acetonitrile and urine sample (homogenous solution) is load...

A simple and efficient homogenous liquid-liquid extraction method performed in a narrow tube combined with dispersive liquid-liquid microextraction method has been presented for the simultaneous determination of two antiepileptic drugs in urine followed by gas chromatography with flame ionization detection. In this method, a mixture of acetonitrile and urine sample (homogenous solution) is load...

Journal: :iranian journal of basic medical sciences 0
amir hooshang mohammadpour pharmaceutical research center, department of pharmacodynamics and toxicology, school of pharmacy, mashhad university of medical sciences, mashhad, iran mohammad ramezani 2pharmaceutical research centre, department of biotechnology, school of pharmacy, mashhad university of medical sciences, mashhad, iran nasim tavakoli anaraki 1pharmaceutical research center, department of pharmacodynamics and toxicology, school of pharmacy, mashhad university of medical sciences, mashhad, iran bizhan malaekeh-nikouei 3nanotechnology research centre, department of pharmaceutics, school of pharmacy, mashhad university of medical sciences, mashhad, iran sara amel farzad2 2pharmaceutical research centre, department of biotechnology, school of pharmacy, mashhad university of medical sciences, mashhad, iran hossein hosseinzadeh 1pharmaceutical research center, department of pharmacodynamics and toxicology, school of pharmacy, mashhad university of medical sciences, mashhad, iran

objective(s):the present study reports the development and validation of a sensitive and rapid extraction method beside high performance liquid chromatographic method for the determination of crocetin in human serum. materials and methods:the hplc method was carried out by using a c18 reversed-phase column and a mobile phase composed of methanol/water/acetic acid (85:14.5:0.5 v/v/v) at the flow...

Abolfazl Saleh, Saeideh Molaei, Sara Abedi, Shahab Shariati,

Abstract In this study, microfunnel-supported liquid-phase microextraction method (MF-LPME) was optimized and applied for the determination of some chlorophenoxyacetic acids (CPAAs) from natural water samples. The extraction was performed with 540 μL toluene which was retained at the surface of the sample solution using an upside down microfunnel. After the extraction, toluene was moved in...

Journal: :journal of chemical health risks 0
saeedeh ansari department of chemistry, islamic azad university, saveh branch, saveh, iran azam ghorbani department of chemistry, islamic azad university, saveh branch, saveh, iran

in this study, for the analysis of human urine samples, a novel method explained for the determination of celecoxib, a nonsteroidal anti-inflammatory drug (nsaid), using molecularly imprinted solid-phase extraction (mispe) coupled with high-performance liquid chromatography (hplc). the synthesis of the mip was performed by precipitation polymerization in methacrylic acid (maa), ethylene glycol ...

Journal: :analytical and bioanalytical chemistry research 0
faezeh khalilian department of chemistry, college of basic science, yadegar -e- imam khomeini (rah) shahre rey branch, islamic azad university, tehran, iran mohammad farajvand department of chemistry, college of basic science, yadegar-e-imam khomeini (rah) shahre rey branch, islamic azad university, tehran, iran

a solid phase extraction sorbent based on polyaniline/graphene nanocomposite is presented. the structure and morphology of synthesized nanocomposite were investigated by fourier transform infrared spectroscopy, field emission scanning electron microscopy, x-ray diffraction and thermal gravimetric analysis. the dispersive solid phase extraction was employed to the isolation and preconcentration ...

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