首页|A sensitive biosensor for glucose determination based on the unique catalytic chemiluminescence of sodium molybdate
A sensitive biosensor for glucose determination based on the unique catalytic chemiluminescence of sodium molybdate
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NSTL
Elsevier
Chemiluminescent (CL) reaction between hydrogen peroxide (H2O2) and luminol was dramatically enhanced by sodium molybdate (Na2MoO4) for 284-fold. CL mechanism investigation indicated that Na2MoO4 increased the production of hydroxyl radical ((OH)-O-center dot) and superoxide anion (O-center dot(2)) in the H2O2 luminol system, which could attribute to the enhanced-CL intensity and gave us new insights into the CL-enhanced property of Na2MoO4. The CL intensity of Na2MoO4-H2O2-luminol system increased with the concentration of H2O2, based on which, a convenient and sensitive CL determination method could be developed for H2O2 in the concentration ranging from 0.5 to 60 mu mol/L, with a detection limit of 0.25 mu mol/L. Combining with glucose oxidase, the Na2MoO4-H2O2-luminol system could also be applied for glucose detection. Glucose in human serum has been successfully detected with satisfied recoveries in the range of 96.7 % to 105.4 %. (C) 2021 Elsevier B.V. All rights reserved.
NSTL
Elsevier
