MIPs logo MIPdatabase      MIP2024 Conference banner, website is now open, register on site for important updates   
Custom Search
Reference type: Journal
Authors: Zhang Y, Kang TF, Lu LP, Cheng SY
Article Title: Preparation and Characterization of Parathion Sensor Based on Molecularly Imprinted Polymer.
Publication date: 2008
Journal: Chinese Journal of Environmental Science
Issue: (4)
Page numbers: 1072-1076.
Alternative URL: http://en.cnki.com.cn/Article_en/CJFDTotal-HJKZ200804042.htm

Abstract: A novel electrochemical sensor for the detection of parathion based on molecularly imprinted polymer of self-assembled o-aminothiophenol onto gold electrode was constructed. The polymerization solution was prepared from a 10 mmol/L parathion, 5 mmol/L tetra-n-butylammonium perchlorate, 30 mmol/L o-aminothiophenol solution of dichloromethane. Electropolymerization was carried out over 30 cycles between -0.3 V and 1.4 V. The template molecules were removed from the modified electrode surface by washing with 0.5 mol/L hydrochloric acid. Cyclic voltammetry was employed in the process of electrochemical measurements. The experimental results show that the optimum acidity of background solution is pH 6.8 and the optimum incubation time is 10 min. A highly linear response to parathion in the concentration range of 1.0 x 10-4 - 5.0 x 10-7 mol/L is observed,with a detection limit of 2.0 x 10-7 mol/L estimated at a signal-to-noise ratio of 3. The sensor has been applied to the analysis of parathion in real sample with recovery rates ranging from 98.0% to 104%. Parathion imprinted and nonimprinted polymer films were exposed to a series of closely related compounds, e.g.methyl-parathion, paraoxon, phoxim, omethoate, nitrobenzene and o-, m-, p-nitrophenol, and the sensor exhibited good selectivity and sensitivity to parathion.
Template and target information: parathion
Author keywords: sensor, electropolymerization, molecularly imprinting, Parathion, o-aminothiophenol


  Mister Benzene Birthday card  Chemistry peptide mug  Beach bunny periodic table shirt






 

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