Flow injection fluorimetric determination of β-estradiol using a molecularly imprinted polymer

The Analyst ◽  
2005 ◽  
Vol 130 (10) ◽  
pp. 1404 ◽  
Author(s):  
Juan C. Bravo ◽  
Pilar Fernández ◽  
Jesús S. Durand
Keyword(s):  
Flow Injection ◽  
Molecularly Imprinted Polymer ◽  
Imprinted Polymer ◽  
Fluorimetric Determination ◽  
Molecularly Imprinted

scholarly journals Flow-Injection Preconcentration of Chloramphenicol Using Molecularly Imprinted Polymer for HPLC Determination in Environmental Samples

2011 ◽  
Vol 2011 ◽  
pp. 1-10 ◽  
Author(s):  
Damian Kowalski ◽  
Ewa Poboży ◽  
Marek Trojanowicz
Keyword(s):  
Flow Injection ◽  
Molecularly Imprinted Polymer ◽  
Environmental Samples ◽  
Limit Of Detection ◽  
Reversed Phase ◽  
Injection System ◽  
Imprinted Polymer ◽  
Molecularly Imprinted ◽  
Hplc System

The residue of antibiotic chloramphenicol (CAP) is important issue for food quality control and also for the environmental monitoring. It is banned for use in food-producing animals and has very limited use in human medicine, because of its severe impact on human health. Determination of trace level of CAP in environmental samples requires a very sensitive analytical method and efficient preconcentration procedure. CAP can be efficiently preconcentrated in flow-injection system using flow-through reactor packed with molecularly imprinted polymer (MIP), but determination of CAP in eluate from MIP requires the application of chromatographic separation, which was made in reversed-phase HPLC system with UV detection. In optimized conditions the limit of detection for 100 mL sample in HPLC with offline preconcentration on MIP was evaluated as 0.66 mg/L. In hyphenated FIA-HPLC system with zone sampling the LOD for developed method was evaluated as 15 ng/L, which indicates the possibility of using it for analysis of environmental samples.

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