MIPs logo MIPdatabase      Special issue call for papers   
Custom Search
Reference type: Journal
Authors: Zhao Q, Li HY, Xu Y, Zhang FS, Zhao JH, Wang L, Hou J, Ding H, Li Y, Jin HY, Ding L
Article Title: Determination triazine pesticides in cereal samples based on single-hole hollow molecularly imprinted microspheres.
Publication date: 2015
Journal: Journal of Chromatography A
Volume: 1376
Page numbers: 26-34.
DOI: 10.1016/j.chroma.2014.12.021
Alternative URL: http://www.sciencedirect.com/science/article/pii/S002196731401927X

Abstract: Single-hole hollow molecularly imprinted microspheres (h-MIMs) were prepared by hard template method and applied to extract six triazine pesticides in cereal samples, followed by HPLC-MS/MS detection. The synthesis mechanism of the h-MIMs has been studied. The h-MIMs exhibited bigger specific surface area and much higher binding capacity than the molecularly imprinted polymers prepared by precipitation polymerization (p-MIPs) and surface polymerization (s-MIPs). Besides, the adsorption rate of h-MIMs to prometryn was significantly higher than that of p-MIPs and s-MIPs. Owing to the hollow structure of the h-MIMs, more binding cavities were located on the inner and outer surfaces of the h-MIMs, which could facilitate the removal of template molecules from the polymers and the rebinding of the target molecules to the polymers. Under the optimal conditions, the detection limits of triazines are in the range of 0.08-0.16 ng g-1. At the spiked level (5 ng g-1), the recoveries of triazines are in the range of 81 4% to 96 4%. The proposed method was successfully applied to determine six triazines in five cereal samples. Atrazine was found in two rice samples and a wheat sample with the contents of 5.1, 6.7 and 5.6 ng g-1, respectively. Ametryn and prometryn were found in a maize sample with the contents of 7.6 and 7.3 ng g-1, respectively
Template and target information: atrazine, ametryn, prometryn, triazines
Author keywords: Hollow molecularly imprinted microspheres, Single-hole polymers, Cereal samples, triazine herbicides, Liquid chromatography-tandem mass spectrometry, solid phase extraction

  I love MIPs shirt  multi MIPs logo mug    Magnet featuring the template Atrazine


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