نتایج جستجو برای: Indirect UV detection

تعداد نتایج: 705698  

Journal: :iranian journal of pharmaceutical research 0
a shafaati m zand karimi sm foroutan n hassani oliaee

capillary electrophoresis (ce) with indirect uv detection is an interesting analytical method for the analysis of drugs and pharmaceuticals. good and reproducible capillary quality is needed to develop robust methods and to facilitate method transfer in ce. it is widely accepted that preconditioning procedures are indispensable in capillary electrophoresis in order to achieve reproducibility of...

2017
Jun Qiu Jinhao Wang Zhongqi Xu Huiqing Liu Jie Ren

The branched-chain amino acids (BCAAs) including leucine (Leu), isoleucine (Ile) and valine (Val) play a pivotal role in the human body. Herein, we developed capillary electrophoresis (CE) coupled with conventional UV detector to quantify underivatized BCAAs in two kinds of sport nutritional supplements. For direct UV detection at 195 nm, the BCAAs (Leu, two enantiomers of Ile and Val) were sep...

Journal: :Journal of chromatography 1992
M T Ackermans F M Everaerts J L Beckers

Aminoglycoside antibiotics can be determined by capillary zone electrophoresis (CZE) with indirect UV detection in the anionic mode with a reversed electroosmotic flow (EOF) by addition of FC 135 to the background electrolyte. The effective mobilities of thirteen aminoglycoside antibiotics were determined as a function of pH. Applying CZE with indirect UV detection in the anionic mode and rever...

Journal: :the iranian journal of pharmaceutical research 0
hamideh sobhani department of pharmaceutics, school of pharmacy, shahid beheshti university of medical sciences, tehran, iran. alireza shafaati department of pharmaceutical chemistry, school of pharmacy, shahid beheshti university of medical sciences, tehran, iran. nastaran nafissi-varcheh department of pharmaceutical biotechnology, school of pharmacy, shahid beheshti university of medical sciences, tehran, iran. reza aboofazeli department of pharmaceutics, school of pharmacy, shahid beheshti university of medical sciences, tehran, iran.

easily degradating and various isomeric forms of rapamycin (sirolimus) face the determination of this compound to many challenges. in this study, we developed and validated the isocratic reversed phase high performance liquid chromatographic (rp-hplc) method for rapamycin. separation was performed on a c8 column (mz, 15 × 4.6 mm, 5 µm particle size) using methanol:water (80:20 v/v) as the mobil...

Journal: :iranian journal of pharmaceutical research 0
shirin hooshfar department of pharmaceutics, school of pharmacy, shahid beheshti university of medical sciences, tehran, iran. seyed alireza mortazavi department of pharmaceutics, school of pharmacy, shahid beheshti university of medical sciences, tehran, iran mohammad piryaei medical genetics department, faculty of medicine, shahid beheshti university of medical sciences, tehran, iran. hossein ramandi darzi medical genetics department, faculty of medicine, shahid beheshti university of medical sciences, tehran, iran. nahid shahsavari department of clinical pharmacy, school of pharmacy, shahid beheshti university of medical sciences, tehran, iran. farzad kobarfard department of pharmaceutics, school of pharmacy, shahid beheshti university of medical sciences, tehran, iran.

a gradient reversed-phase high performance liquid chromatography (hplc) method was developed for the assay of cetrorelix acetate, a synthetic decapeptide with gonadotropin-releasing hormone (gnrh) antagonistic activity used in infertility treatment. the hplc method, which is used to determine cetrorelix in bulk and pharmaceutical dosage forms, was validated per ich guidelines. the chromatograph...

Journal: :the iranian journal of pharmaceutical research 0
tayebeh ghari 1- department of pharmaceutics, school of pharmacy, shahid beheshti university of medical sciences, tehran, iran. 2- students research committee, school of pharmacy, shahid beheshti university of medical sciences, tehran, iran. farzad kobarfard department of pharmaceutical chemistry, school of pharmacy, shahid beheshti university of medical sciences, tehran, iran. seyed alireza mortazavi department of pharmaceutics, school of pharmacy, shahid beheshti university of medical sciences, tehran, iran.

the present study was designed to develop a simple, validated liquid chromatographic method for the analysis of azithromycin in bulk and pharmaceutical dosage forms using ultraviolet detector. the best stationary phase was determined as c18 column, 5 µm, 250 mm × 4.6 mm. mobile phase was optimized to obtain a fast and selective separation of the drug. flow rate was 1.5 ml/min, wavelength was se...

ژورنال: مواد پرانرژی 2017

Simultaneous analysis of explosives to identify, determine the purity and eliminate environmental pollution requires rapid, simple and cheap methods. Spectrophotometries method (UV-Vis), high-field proton nuclear magnetic resonance (1H-NMR), Raman spectroscopy and near infrared (NIR) are common methods that are applicable in two ways of direct and indirect in simultaneous analysis. In this poin...

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