MIPs logo MIPdatabase      Use this space
Custom Search
Reference type: Journal
Authors: Traviesa-Alvarez JM, Sánchez-Barragán I, Costa-Fernández JM, Pereiro R, Sanz-Medel A
Article Title: Room temperature phosphorescence optosensing of benzo[a]pyrene in water using halogenated molecularly imprinted polymers.
Publication date: 2007
Journal: Analyst
Volume: 132
Issue: (3)
Page numbers: 218-223.
DOI: 10.1039/b616919h

Abstract: A selective optosensor for benzo[a]pyrene (BaP) determination in water samples, using a molecularly imprinted polymer (MIP) for the recognition of the analyte, has been developed. Detection was based on measurements of the native strong room temperature phosphorescence (RTP) emission from the BaP recognized by the MIPThe non-covalent MIP was synthesized using BaP as a molecular template. Different halogenated-bisphenol A compounds were compared as precursors in the polymerization (thus ensuring the presence of a heavy atom, required to induce RTP emission from the analyte).In the developed optosensor, samples are injected in a flow system and the analyte is on-line retained onto the polymeric material. In the absence of oxygen (using sodium sulfite as the oxygen scavenger) the heavy atom present in the MIP structure induced analytically useful RTP emission from the recognized BaP. After measurement of the luminescent emission, the sensing material can be easily regenerated by passing 2 mL of methanol over the MIP.The optosensor demonstrated a very high selectivity for BaP determination in water even in the presence of other luminophores that could be non-specifically adsorbed onto the MIP surface. Under optimal experimental conditions, a benzo[a]pyrene detection limit of 10 ng L-1 (20 mL sample injection volume) was achieved with good reproducibility (a RSD of 3% was obtained for 1 μg L-1 BaP). Finally, the proposed optosensor was successfully applied to the analysis of spiked natural water with BaP.
Template and target information: benzo[a]pyrene, BaP

  I love MIPs bag  multi MIPs logo mug  British periodic table patriotic tote bag

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