Hollow mesoporous structured molecularly imprinted polymer as adsorbent in pipette-tip solid-phase extraction for the determination of antiretrovirals from plasma of HIV-infected patients

2018 ◽  
Vol 39 (20) ◽  
pp. 2581-2589 ◽  
Author(s):  
Nathália Soares Simões ◽  
Hanna Leijoto de Oliveira ◽  
Ricky Cássio Santos da Silva ◽  
Leila Suleimara Teixeira ◽  
Thaís Lorenna Souza Sales ◽  
...  
Keyword(s):  
Solid Phase Extraction ◽  
Molecularly Imprinted Polymer ◽  
Solid Phase ◽  
Phase Extraction ◽  
Imprinted Polymer ◽  
Molecularly Imprinted ◽  
Pipette Tip

Application of the response surface methodology in the optimization of modified molecularly imprinted polymer based pipette-tip micro-solid phase extraction for spectrophotometric determination of nicotine in seawater and human plasma

2019 ◽  
Vol 11 (42) ◽  
pp. 5405-5412 ◽  
Author(s):  
Sayyed Hossein Hashemi ◽  
Fateme Keykha
Keyword(s):  
Solid Phase Extraction ◽  
Human Plasma ◽  
Molecularly Imprinted Polymer ◽  
Solid Phase ◽  
Phase Extraction ◽  
Imprinted Polymer ◽  
Spectrophotometric Detection ◽  
Molecularly Imprinted ◽  
Pipette Tip

In this paper, a novel molecularly imprinted polymer/zinc oxide (MIP/ZnO) was synthesized and applied as an adsorbent for pipette-tip micro-solid phase extraction (MIP/ZnO PT-μSPE) of nicotine from seawater and human plasma followed by its spectrophotometric detection.

scholarly journals Assessment of the Performance of Solid Phase Extraction Based on Pipette Tip Employing a Hybrid Molecularly Imprinted Polymer as an Adsorbent for Enantioselective Determination of Albendazole Sulfoxide

2019 ◽  
Vol 57 (7) ◽  
pp. 671-678 ◽  
Author(s):  
Sara da Silva Anacleto ◽  
Hanna Leijoto de Oliveira ◽  
Anny Talita Maria da Silva ◽  
Tienne Aparecida do Nascimento ◽  
Marcella Matos Cordeiro Borges ◽  
...  
Keyword(s):  
Solid Phase Extraction ◽  
Molecularly Imprinted Polymer ◽  
Human Urine ◽  
Solid Phase ◽  
Phase Extraction ◽  
Imprinted Polymer ◽  
Molecularly Imprinted ◽  
Albendazole Sulfoxide ◽  
Pipette Tip

Abstract Herein, an organic–inorganic hybrid molecularly imprinted polymer (MIP) was successfully synthesized with albendazole sulfoxide (ABZSO) as a template and 3-(trimethoxysilyl)propyl methacrylate, a bifunctional group compound, as a single cross-linking agent. In this study, a simple method using HPLC–DAD was developed for the determination of ABZSO enantiomers in human urine using pipette tip-based molecularly imprinted polymer solid phase extraction (PT–MIP–SPE). Enantioseparation with satisfactory retention times (5.17 and 7.09 min), acceptable theoretical plates (N = 4,535 and 5,091) and strong resolution (Rs = 5.45) was performed with an Agilent® Eclipse Plus C18 (100 mm × 4.6 mm, 3.5 μm) coupled with a Chiralpak® IA column (100 mm × 4.6 mm, 3 μm), a mixture with ethanol:water (50:50, v/v) as the mobile phase, temperature at 40°C, flow rate at 0.9 mL min−1 and λ = 230 nm. Thereafter, certain parameters affecting the PT–MIP–SPE were investigated in detail and the better conditions were: 300 μL of water as washing solvent, 500 μL of ethanol:acetic acid (9:1, v/v) as eluting solvent, 20 mg of MIP, 500 μL of human urine at pH 9 and no addition of NaCl. Recoveries/relative standard deviation (RSD%) for (R)-(+)-ABZSO and (S)-(−)-ABZSO were 78.2 ± 0.2% and 69.7 ± 1.7%, respectively.

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