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Reference type: Journal
Authors: Hu YL, Zhu F, Li JW, Li GK
Article Title: Preparation of Terbuthylazine Molecularly Imprinted Monolithic Bar and its Extraction Property.
Publication date: 2009
Journal: Chinese Journal of Analytical Chemistry
Volume: 37
Issue: (3)
Page numbers: 466-470.
Alternative URL: http://www.analchem.cn/file/upload/2009/03/32.pdf

Abstract: The molecularly imprinted monolithic bar was prepared by blocking-tube polymerization at 75 degrees C for 24 h using terbuthylazine as template, methacrylic acid (MAA) as monomer and trimethylolpropane trimethacrylate (TRIM) as cross-linker respectively. Preparing material and conditions were researched. The surface structure of the monolithic bar was investigated by scanning electron micrograph and it showed a porous structure. The extraction conditions and properties of the molecularly imprinted monolithic bar for enrichment of triazines was investigated. Extraction was performed in toluene for 60 min and the analytes were then desorbed by 150 mu L methanol. Results indicated special selectivity towards terbuthylazine and its analogs such as simazine, simetryn, atrazine, ametryn, propazine and terbutryn was obtained for the molecularly imprinted monolithic bar compared to the non-imprinted monolithic bar. The enrichment efficiency of the molecularly imprinted monolithic bar for triazines was 1.5 to 8.1 times as that of the non-imprinted monolithic bar. Better selectivity was obtained for chlorotriazines than that of thiotrizaines. The molecularly imprinted monolithic bar was effective and selective for the enrichment of spiked lettuce. It showed potential application to the analysis of trace triazines in complex matrix
Template and target information: terbuthylazine
Author keywords: molecularly imprinted polymer, terbuthylazine, monolithic bar, triazines

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