A Light Emitting Diode Improves Evanescent Excitation of a Fiber Optic Cocaine Biosensor

Abstract
The replacement of the quartz halogen lamp of an ORD fluorometer with a high brightness blue-light-emitting diode enhanced evanescent excitation of benzoylecgonine-fluorescein bound to the mAbs immobilized on quartz fibers and gave stronger optical signals.