期刊
ANALYTICA CHIMICA ACTA
卷 674, 期 1, 页码 40-48出版社
ELSEVIER SCIENCE BV
DOI: 10.1016/j.aca.2010.06.006
关键词
Gas chromatography; Solid-Phase microextraction; Molecularly imprinted polymer; Anodized aluminum; Coated fiber; Triazine herbicides
资金
- Center of Excellency of Green Chemistry and New Compounds
- Research Office of Tabriz University
A new solid-phase microextraction (SPME) fiber is fabricated through ultra violet irradiation polymerization of ametryn-molecularly imprinted polymer on the surface of anodized-silylated aluminum wire. The prepared fiber is durable with very good chemical and thermal stability which can be coupled to GC and GC/MS. The effective parameters on the fabrication and application procedures such as spraying mode, ultra violet irradiation (polymerization) time, number of sprayings and polymerizations, pH and ionic strength of sample and extraction time were optimized. This fiber shows high selectivity with great extraction capacity toward triazines. SPME and GC analysis of ametryn, prometryn, terbutryn, atrazine. simazine, propazine and cyanazine using the fabricated fiber result in the detection limits of 9, 32, 27, 43, 51. 74 and 85 ng mL(-1), respectively. The reliability of the prepared fiber in real samples has been investigated and proved by using spiked tap water, rice, maize and onion samples. (C) 2010 Elsevier B.V. All rights reserved.
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