Chemiluminescence: a sensitive and versatile method for analyte detection.
The generation of light from the oxidation of oxalic esters with hydrogen peroxide has been applied to the detection of luminescent materials. In order to improve the efficiency of this method, which is less than 0.1%, and to enhance the selectivity for target analytes, an in-depth investigation of the oxalate ester-hydrogen peroxide reaction has been conducted. A kinetic model has been developed based on the effects of catalysts, reagents and reaction conditions for maximum light production. Application of the model to liquid chromatography through the "time-dependent emission window" concept affords a predictable maximum sensitivity for selected analytes. Application to the detection and quantitation of met- and leu-enkephalins which have been labelled with naphthalene-2,3-dicarboxyaldehyde/cyanide provides support for this methodology. Other bioanalytical applications are presented.
Givens
R S
RS
Center for Bioanalytical Research, University of Kansas, Lawrence 66045.
Jencen
D A
DA
Riley
C M
CM
Stobaugh
J F
JF
Chokshi
H
H
Hanaoka
N
N
D006801:Humans; D007202:Indicators and Reagents; D008163:Luminescent Measurements; D004364:Pharmaceutical Preparations / Q000032:analysis*
D007202:Indicators and Reagents; D004364:Pharmaceutical Preparations