MIPs logo MIPdatabase      MIP2020 Conference logo Use this space
Custom Search
Reference type: Journal
Authors: James D, Gladis JM, Pandey AK, Naidu GRK, Rao TP
Article Title: Design of two-dimensional biomimetic uranyl optrode and its application to the analysis of natural waters.
Publication date: 2008
Journal: Talanta
Volume: 74
Issue: (5)
Page numbers: 1420-1427.
DOI: 10.1016/j.talanta.2007.09.019
Alternative URL: http://www.sciencedirect.com/science/article/B6THP-4PSK8PT-4/2/ae16a1e74f91b3ad9ee5c9d744e7c775

Abstract: A two-dimensional biomimetic optrode for the detection and quantification of uranium in natural waters was fabricated. The sensing element was designed by the inclusion of uranyl ion imprinted polymer particles into polymethyl methacrylate followed by casting a thin film on a glass slide without any plasticizer. The ion imprinted polymer material was prepared via covalent immobilization of the newly synthesised ligand 4-vinyl phenylazo-2-naphthol by thermal polymerization. Operational parameters such as pH, response time and the amount of sensing material were optimized. The response characteristics of the imprinted and the corresponding non-imprinted polymer inclusion optrodes of uranium were compared under optimum conditions. The imprinted polymer inclusion optrode responds linearly to uranium in the concentration range 0-1.0 μg mL-1 with a detection limit of 0.18 μg mL-1, which is much better than the solution studies using 4-vinyl phenylazo-2-naphthol (1.5 μg mL-1). Triplicate determinations of 100 μg of uranium(VI) present in 250 mL of solution gave a mean absorbance of 0.018 with a relative standard deviation of 8.33%. The superior sensitivity of imprinted polymer inclusion optrode is exemplified by lower detection limits and broader dynamic range over non-imprinted polymer inclusion optrode. The developed imprinted polymer inclusion optrode was found to give stable and precise response for 3 months and can be used without any loss in sensitivity. The applicability for analysing ground, lake and tap-water samples collected in the vicinity of uranium deposits was successfully demonstrated
Author keywords: Two-dimensional sensor, Optrode, uranium, determination, solid phase extraction, ion imprinted polymer

  mipdatabase.com logo imprinters do it in bulk shirt  Science Teacher peptide mug    mug featuring the element Uranium

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