MIPs logo MIPdatabase      MIP2020 Conference logo Use this space
Custom Search
Reference type: Journal
Authors: Kamel AH, Soror TY, Al Romian FM
Article Title: Flow through potentiometric sensors based on molecularly imprinted polymers for selective monitoring of mepiquat residue, a quaternary ammonium herbicide.
Publication date: 2012
Journal: Analytical Methods
Volume: 4
Issue: (9)
Page numbers: 3007-3012.
DOI: 10.1039/C2AY25317H

Abstract: A biomimetic potentiometric sensor for specific recognition of mepiquat (MQ), a herbicide and plant growth regulator, is designed. It belongs to the group of quaternary ammonium pesticides which are commonly known as quats. The sensor is produced via preparation of MQ imprinted polymer particles using methacrylic acid (MAA) and acrylamide (AA) as functional monomers. Subsequently, the leached molecularly imprinted polymer (MIP) particles were dispersed in 2-nitrophenyloctyl ether (o-NPOE) and embedded in polyvinyl chloride matrix, the design can be easily used in flow injection system. Under static modes of operation, the sensors revealed a near Nernstian response over a wide MQ+ concentration range 5.0 x 10-7 to 1.0 x 10-3 and 3.0 x 10-6 to 1.0 x 10-3 mol L-1 with detection limit of 0.03 and 0.15 μg mL-1, respectively. In the hydrodynamic mode of operation, good reproducibility (RSD of 0.7%), fast response, high sensitivity with a Nernstian response 42.1 (r2 = 0.999) and 38.4 (r2 = 0.996) mV decade-1, linear range 1.0 x 10-5 to 1.0 x 10-2 and 5.0 x 10-5 to 1.0 x 10-2 mol L-1, detection limit 8 x 10-6 and 3 x 10-5 mol L-1, high sampling rate (~ 30 to 36 sample h-1) and stable baseline was observed in the presence of 5 x 10-2 mol L-1 phosphate buffer (pH 6) as a carrier for MQ membrane based sensors. Applications of the sensors for the determination of MQ+ in spiked ground water and food samples are also reported
Template and target information: mepiquat, MQ


  SMI logo drop earrings  Periodic table Smart hat  Lab Chick script shirt

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