Hollow fiber-based liquid phase microextraction (HF-LPME) as a new approach for the HPLC determination of fluoroquinolones in biological and environmental matrices

2011 ◽  
Vol 55 (2) ◽  
pp. 332-341 ◽  
Author(s):  
María Ramos Payán ◽  
Miguel Ángel Bello López ◽  
Rut Fernández-Torres ◽  
Juan Antonio Ocaña González ◽  
Manuel Callejón Mochón
Keyword(s):  
Liquid Phase ◽  
Hollow Fiber ◽  
Hplc Determination ◽  
Environmental Matrices ◽  
Liquid Phase Microextraction ◽  
New Approach

Hollow fiber-based liquid phase microextraction (HF-LPME) for a highly sensitive HPLC determination of sulfonamides and their main metabolites

2011 ◽  
Vol 879 (2) ◽  
pp. 197-204 ◽  
Author(s):  
María Ramos Payán ◽  
Miguel Ángel Bello López ◽  
Rut Fernández-Torres ◽  
Mercedes Villar Navarro ◽  
Manuel Callejón Mochón
Keyword(s):  
Liquid Phase ◽  
Hollow Fiber ◽  
Hplc Determination ◽  
Liquid Phase Microextraction ◽  
Highly Sensitive

HPLC determination of ibuprofen, diclofenac and salicylic acid using hollow fiber-based liquid phase microextraction (HF-LPME)

2009 ◽  
Vol 653 (2) ◽  
pp. 184-190 ◽  
Author(s):  
María Ramos Payán ◽  
Miguel Ángel Bello López ◽  
Rut Fernández-Torres ◽  
Juan Luis Pérez Bernal ◽  
Manuel Callejón Mochón
Keyword(s):  
Salicylic Acid ◽  
Liquid Phase ◽  
Hollow Fiber ◽  
Hplc Determination ◽  
Liquid Phase Microextraction

Application of three phase hollow fiber based liquid phase microextraction (HF-LPME) for the simultaneous HPLC determination of phenol substituting compounds (alkyl-, chloro- and nitrophenols)

Talanta ◽  
2012 ◽  
Vol 99 ◽  
pp. 55-61 ◽  
Author(s):  
Mercedes Villar-Navarro ◽  
María Ramos-Payán ◽  
Juan Luis Pérez-Bernal ◽  
Rut Fernández-Torres ◽  
Manuel Callejón-Mochón ◽  
...  
Keyword(s):  
Liquid Phase ◽  
Hollow Fiber ◽  
Hplc Determination ◽  
Liquid Phase Microextraction ◽  
Three Phase

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.

Determination of estrogens in wastewater using three-phase hollow fiber-mediated liquid-phase microextraction followed by HPLC

2008 ◽  
Vol 31 (4) ◽  
pp. 622-628 ◽  
Author(s):  
Meihua Liu ◽  
Bin Qiu ◽  
Xia Jin ◽  
Lan Zhang ◽  
Xi Chen ◽  
...  
Keyword(s):  
Liquid Phase ◽  
Hollow Fiber ◽  
Liquid Phase Microextraction ◽  
Three Phase
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