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Reference type: Journal
Authors: Shen ZL, Yuan D, Su QD, Zhang H, Wang J, Zhu JH, Liu YM
Article Title: Selective Solid-Phase Extraction Using Molecularly Imprinted Polymer for Analysis of Methamidophos in Water and Soil Samples.
Publication date: 2011
Journal: Bioscience Biotechnology and Biochemistry
Volume: 75
Issue: (3)
Page numbers: 473-479.
DOI: 10.1271/bbb.100668
Alternative URL: http://www.jstage.jst.go.jp/article/bbb/advpub/0/advpub_1101242357/_article

Abstract: An analytical methodology for the analysis of methamidophos in water and soil samples incoporating a molecularly imprinted solid-phase extraction process using methamidophos-imprinted polymer was developed. Binding study demonstrated that the polymer exhibited excellent affinity and high selectivity to the methamidophos. Evidence was also found by FT-IR analysis that hydrogen bonding between the CO(2)H in the polymer cavities and the NH(2) and P=O of the template was the origin of methamidophos recognition. The use of molecularly imprinted solid-phase extraction improved the accuracy and precision of the GC method and lowered the limit of detection. The recovery of methamidophos extracted from a 10.0 g soil sample at the 100 ng/g spike level was 95.4%. The limit of detection was 3.8 ng/g. The recovery of methamidophos extracted from 100 mL tap and river water at 1 ng/mL spike level was 96.1% and 95.8%, and the limits of detection were 10 and 13 ng/L respectively. These molecularly imprinted solid-phase extraction procedures enabled selective extraction of polar methamidophos successfully from water and soil samples, demonstrating the potential of molecularly imprinted solid-phase extraction for rapid, selective, and cost-effective sample pretreatment.
Template and target information: methamidophos
Author keywords: Methamidophos, molecularly imprinted solid-phase extraction (MISPE), FT-IR, water, soil

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