Capillary electrophoresis and hollow fiber liquid-phase microextraction for the enantioselective determination of albendazole sulfoxide after biotransformation of albendazole by an endophytic fungus

2011 ◽  
Vol 32 (19) ◽  
pp. 2746-2756 ◽  
Author(s):  
Daniel B. Carrão ◽  
Keyller B. Borges ◽  
Thiago Barth ◽  
Mônica T. Pupo ◽  
Pierina S. Bonato ◽  
...  
Keyword(s):  
Capillary Electrophoresis ◽  
Liquid Phase ◽  
Hollow Fiber ◽  
Endophytic Fungus ◽  
Liquid Phase Microextraction ◽  
Albendazole Sulfoxide

Hollow fiber supported liquid-phase microextraction combined with maltodextrin-modified capillary electrophoresis for the determination of citalopram enantiomers in urine samples

2015 ◽  
Vol 7 (5) ◽  
pp. 2012-2019 ◽  
Author(s):  
Jafar Abolhasani ◽  
Hamid Reza Jafariyan ◽  
Mohammad Mahdi khataei ◽  
Rahim Hosseinzadeh-khanmiri ◽  
Ebrahim Ghorbani-kalhor ◽  
...  
Keyword(s):  
Capillary Electrophoresis ◽  
Liquid Phase ◽  
Hollow Fiber ◽  
Urine Samples ◽  
Simple Method ◽  
Liquid Phase Microextraction ◽  
Supported Liquid Phase

A simple method was developed for the separation and determination of citalopram enantiomers in urine samples.

Capillary electrophoresis determination of nonsteroidal anti-inflammatory drugs in wastewater using hollow fiber liquid-phase microextraction

2011 ◽  
Vol 32 (16) ◽  
pp. 2107-2113 ◽  
Author(s):  
Mercedes Villar Navarro ◽  
María Ramos Payán ◽  
Rut Fernández-Torres ◽  
Miguel A. Bello-López ◽  
Manuel Callejón Mochón ◽  
...  
Keyword(s):  
Capillary Electrophoresis ◽  
Liquid Phase ◽  
Hollow Fiber ◽  
Liquid Phase Microextraction ◽  
Inflammatory Drugs ◽  
Anti Inflammatory

Multi-walled Carbon Nanotubes Reinforced into Hollow Fiber by Chitosan Sol-gel for Solid/Liquid Phase Microextraction of NSAIDs from Urine Prior to HPLC-DAD Analysis

2019 ◽  
Vol 20 (5) ◽  
pp. 390-400 ◽  
Author(s):  
Nabil N. AL-Hashimi ◽  
Amjad H. El-Sheikh ◽  
Rania F. Qawariq ◽  
Majed H. Shtaiwi ◽  
Rowan AlEjielat
Keyword(s):  
Carbon Nanotubes ◽  
Liquid Phase ◽  
Hollow Fiber ◽  
Sol Gel ◽  
Liquid Phase Microextraction ◽  
Extraction Device ◽  
Multi Walled Carbon Nanotubes ◽  
Solid Liquid ◽  
Walled Carbon Nanotubes

Background: The efficient analytical method for the analysis of nonsteroidal antiinflammatory drugs (NSAIDs) in a biological fluid is important for determining the toxicological aspects of such long-term used therapies. Methods: In the present work, multi-walled carbon nanotubes reinforced into a hollow fiber by chitosan sol-gel assisted-solid/ liquid phase microextraction (MWCNTs-HF-CA-SPME) method followed by the high-performance liquid chromatography-diode array detection (HPLC–DAD) was developed for the determination of three NSAIDs, ketoprofen, diclofenac, and ibuprofen in human urine samples. MWCNTs with various dimensions were characterized by various analytical techniques. The extraction device was prepared by immobilizing the MWCNTs in the pores of 2.5 cm microtube via chitosan sol-gel assisted technology while the lumen of the microtube was filled with few microliters of 1-octanol with two ends sealed. The extraction device was operated by direct immersion in the sample solution. Results: The main factors influencing the extraction efficiency of the selected NSAIDs have been examined. The method showed good linearity R2 ≥ 0.997 with RSDs from 1.1 to 12.3%. The limits of detection (LODs) were 2.633, 2.035 and 2.386 µg L-1, for ketoprofen, diclofenac, and ibuprofen, respectively. The developed method demonstrated a satisfactory result for the determination of selected drugs in patient urine samples and comparable results against reference methods. Conclusion: The method is simple, sensitive and can be considered as an alternative for clinical laboratory analysis of selected drugs.

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