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library name : انستیتو تغذیه دانشگاه علوم پزشکی شهید بهشتی
Material Type : Latin Articles
Language of Document : English
Record Number : 62043
Doc. No : 702A
Main Entry : RAHIMINEZHHAD M.
Title & Author : MOLECULARLY IMPRINTED SOLID PHASE EXTRACTION FOR TRACE ANALYSIS OF DIAZINON IN DRINK-ING WATER [Article]; RAHIMI FOROUSHANI A.,GOLBABAEI FARIDEH
Title : IRANIAN JOURNAL OF ENVIRONMENTAL HEALTH SCIENCE AND ENGINEERING (IJEHSE)
Volume Number : , Vol.6 ؛ No.2
Date : , (2009)
page : : 97 - 106
Abstract : Amongst organophosphate pesticides, the one most widely used and common environmental contaminant is diazinon; thus methods for its trace analysis in environmental samples must be developed. Use of diazinon imprinted polymers such as sorbents in solid phase extraction, is a prominent and novel application area of molecular imprinted polymers. For diazinon extraction, high performance liquid chromatography analysis was demonstrated in this study. During optimization of the molecular imprinted solid phase extraction procedure for efficient solid phase extraction of diazinon, Plackett-Burman design was conducted. Eight experimental factors with critical influence on molecular imprinted solid phase extraction performance were selected, and 12 different experimental runs based on Plackett-Burman design were carried out. The applicability of diazinon imprinted polymers as the sorbent in solid phase extraction, presented obtained good recoveries of diazinon from LC-grade water. An increase in pH caused an increase in the recovery on molecular imprinted solid phase extraction. From these results, the optimal molecular imprinted solid phase extraction procedure was as follows: solid phase extraction packing with 100 mg diazinon imprinted polymers; conditioning with 5 mL of methanol and 6 mL of LC-grade water; sample loading containing diazinon )pH=10(; washing with 1 mL of LC-grade water, 1 mL LC- grade water containing 30percent acetonitrile and 0.5 mL of acetonitrile, respectively; eluting with 1 mL of methanol containing 2percent acetic acid. The percentage recoveries obtained by the optimized molecular imprinted solid phase extraction were more than 90percent with drinking water spiked at different trace levels of diazinon. Generally speaking, the molecular imprinted solid phase extraction procedure and subsequent high performance liquid chromatography analysis can be a relatively fast and proper approach for qualitative and quantitative analysis of diazinon in drinking water.
Descriptor : NON-COVALENT IMPRINTING APPROACH
Descriptor : MOLECULARLY IMPRINTED SOLID PHASE
Added Entry : SHAHTAHERI S.J.A.D.*
: GANJALI M.R.
 
 
 
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