MIPs logo MIPdatabase      MIP2020 Conference logo Use this space
Custom Search
Reference type: Journal
Authors: Alizadeh T, Ganjali MR, Zare M, Norouzi P
Article Title: Development of a voltammetric sensor based on a molecularly imprinted polymer (MIP) for caffeine measurement.
Publication date: 2010
Journal: Electrochimica Acta
Volume: 55
Issue: (5)
Page numbers: 1568-1574.
DOI: 10.1016/j.electacta.2009.09.086
Alternative URL: http://www.sciencedirect.com/science/article/B6TG0-4XG3SF3-6/2/c518291699a42b4f34642bf6d1e9ea26

Abstract: A new voltammetric sensor for caffeine measurement is introduced. A caffeine-selective molecularly imprinted polymer (MIP) and a non-imprinted polymer (NIP) were synthesized and then used for carbon paste (CP) electrode preparation. The MIP, embedded in the carbon paste electrode, functioned as a selective recognition element and a pre-concentrator agent for caffeine determination. The prepared electrode was used for caffeine measurement via a three-step procedure including analyte extraction in the electrode, electrode washing and electrochemical measurement of caffeine. The MIP-CP electrode showed very high recognition ability in comparison to NIP-CP. It was shown that electrode washing after caffeine extraction led to enhanced selectivity. Differential pulse voltammetry for caffeine determination was more effective than square wave voltammetry. Some parameters affecting sensor response were optimized, and a calibration curve was then plotted. A linear range of 6 x 10-8 to 2.5 x 10-5 mol L-1 was obtained. The detection limit of the sensor was calculated to be equal to 1.5 x 10-8 mol L-1. This sensor was used successfully for caffeine determination in spiked beverage and tea samples
Template and target information: caffeine, 1,3,7-trimethylxanthine
Author keywords: molecularly imprinted polymer, caffeine, Electrochemical sensor, carbon paste electrode


  MIPs are Forever spoof movie poster bag  Chemistry peptide mug    Shirt featuring the template Caffeine

Molecules Special Issue call      Appeal for information






 

Join the Society for Molecular Imprinting
Logo of the Society for Molecular Imprinting

New items RSS feed
new items RSS feed  View latest updates

Sign-up for e-mail updates:
Choose between receiving an occasional newsletter or more frequent e-mail alerts.
Click here to go to the sign-up page.


Is your name elemental or peptidic? Enter your name and find out by clicking either of the buttons below!
Other products you may like:
view listings for MIP books on eBay:



Mickey Mouse 90th Anniversary banner