Title
Fluorescence-based sensing of 2,4,6-trinitrotoluene (TNT) using a multi-channeled poly(methyl methacrylate) (PMMA) microimmunosensor.
Abstract
Fluorescence immunoassays employing monoclonal antibodies directed against the explosive 2,4,6-trinitrotoluene (TNT) were conducted in a multi-channel microimmunosensor. The multi-channel microimmunosensor was prepared in poly (methyl methacrylate) (PMMA) via hot embossing from a brass molding tool. The multi-channeled microfluidic device was sol-gel coated to generate a siloxane surface that provided a scaffold for antibody immobilization. AlexaFluor-cadaverine-trinitrobenzene (AlexaFluor-Cad- TNB) was used as the reporter molecule in a displacement immunoassay. The limit of detection was 1-10 ng/mL (ppb) with a linear dynamic range that covered three orders of magnitude. In addition, antibody crossreactivity was investigated using hexahydro-1,3,5-triazine (RDX), HMX, 2,4-dinitrotoluene (DNT), 4-nitrotoluene (4-NT) and 2-amino-4,6-DNT.
Year
DOI
Venue
2010
10.3390/s100100876
SENSORS
Keywords
Field
DocType
TNT,immunosensor,fluorescence,PMMA,microchannel,antibody
Embossing,Detection limit,Analytical chemistry,Siloxane,Trinitrotoluene,Fluorescence,Immunoassay,Methyl methacrylate,Engineering,Poly(methyl methacrylate)
Journal
Volume
Issue
ISSN
10
1
1424-8220
Citations 
PageRank 
References 
3
1.07
0
Authors
6