Determination of Ochratoxin A in Italian Red Wines by Molecularly Imprinted Solid Phase Extraction and HPLC Analysis

2014 ◽  
Vol 62 (22) ◽  
pp. 5220-5225 ◽  
Author(s):  
Cristina Giovannoli ◽  
Cinzia Passini ◽  
Fabio Di Nardo ◽  
Laura Anfossi ◽  
Claudio Baggiani
Keyword(s):  
Solid Phase Extraction ◽  
Ochratoxin A ◽  
Hplc Analysis ◽  
Solid Phase ◽  
Phase Extraction ◽  
Red Wines ◽  
Molecularly Imprinted

Solid-phase extraction using molecularly imprinted polymer for determination of ochratoxin A in human urine

2015 ◽  
Vol 8 (1) ◽  
pp. 37-43 ◽  
Author(s):  
L. Xie ◽  
P. Sheng ◽  
W. Kong ◽  
X. Zhao ◽  
Z. Ou-Yang ◽  
...  
Keyword(s):  
Liquid Chromatography ◽  
Solid Phase Extraction ◽  
Ochratoxin A ◽  
Molecularly Imprinted Polymer ◽  
Human Urine ◽  
Solid Phase ◽  
Phase Extraction ◽  
Imprinted Polymer ◽  
Molecularly Imprinted

A rapid, selective and reliable sample preparation technique employing solid-phase extraction (SPE) based on molecularly imprinted polymer (MIP) for the determination of ochratoxin A (OTA) in human urine was described. After sample adjustment to pH 2.5 with 0.1 M HCl, the urine sample was loaded onto the MIP-SPE column, and after a wash step, OTA was eluted for measurement by ultra-high performance liquid chromatography coupled with fluorescence detection. Key parameters which affected the MIP-SPE extraction efficiency were optimized as was the detection method. Under the optimised conditions, the limits of detection and quantification for OTA in urine were 0.2 ng/ml and 0.6 ng/ml, respectively. The recoveries for OTA in urine, spiked at the 0.6, 6.0 and 60 ng/ml levels, ranged from 92.0 to 98.9%. Sixty urine samples were analysed, of which four were found to contain OTA at concentrations ranging from 0.022 to 0.083 ng/ml; the positive results were confirmed by liquid chromatography coupled with tandem mass spectrometry. OTA determination in urine is a good indicator for human exposure to the mycotoxin, and this is the first report on OTA contamination in Chinese people.

Determination of active ingredients in Chinese medicine Danning Tablets using dispersion solid-phase extraction by molecular imprinting nanomaterials coupled with HPLC-DAD

2017 ◽  
Vol 9 (17) ◽  
pp. 2585-2589 ◽  
Author(s):  
Jieping Luo ◽  
Ning Chen ◽  
Zaiyue Yang ◽  
Jiyong Han ◽  
Wanying Zhu ◽  
...  
Keyword(s):  
Solid Phase Extraction ◽  
Molecularly Imprinted Polymers ◽  
Solid Phase ◽  
Phase Extraction ◽  
Dispersive Solid Phase Extraction ◽  
Molecularly Imprinted ◽  
Imprinted Polymers ◽  
Pretreatment Method ◽  
Magnetic Molecularly Imprinted Polymers

A reliable pretreatment method of magnetic molecularly imprinted polymers/dispersive solid-phase extraction was developed for selectivity and enrichment of targets.

Determination of Diclofenac in Urine Samples by Molecularly-Imprinted Solid-Phase Extraction and Adsorptive Differential Pulse Voltammetry

2007 ◽  
Vol 19 (15) ◽  
pp. 1555-1561 ◽  
Author(s):  
Laura Fernández-Llano ◽  
M. Carmen Blanco-López ◽  
M. Jesús Lobo-Castañón ◽  
Arturo J. Miranda-Ordieres ◽  
Paulino Tuñón-Blanco
Keyword(s):  
Solid Phase Extraction ◽  
Differential Pulse Voltammetry ◽  
Solid Phase ◽  
Differential Pulse ◽  
Urine Samples ◽  
Phase Extraction ◽  
Molecularly Imprinted ◽  
Pulse Voltammetry

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
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