Selective solid-phase extraction using molecularly imprinted polymer for analysis of methamidophos in water and soil samples.
(17/75)
An analytical methodology for the analysis of methamidophos in water and soil samples incorporating 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. (+info)
Gradients with depth in electrospun fibrous scaffolds for directed cell behavior.
(18/75)
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Synthesis of homoveratric acid-imprinted polymers and their evaluation as selective separation materials.
(19/75)
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Protein crystallization facilitated by molecularly imprinted polymers.
(20/75)
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Responsive micromolds for sequential patterning of hydrogel microstructures.
(21/75)
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Oligomerization of DNMT3A controls the mechanism of de novo DNA methylation.
(22/75)
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Molecularly imprinted polymers for ochratoxin a extraction and analysis.
(23/75)
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QCM-arrays for sensing terpenes in fresh and dried herbs via bio-mimetic MIP layers.
(24/75)
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