Abstract
G-quadruplex/hemin (GQH) is a mimicking enzyme, which has good catalytic performance and high stability for hydrogen peroxide decomposition. A new chemiluminescence (CL) method has been developed for H2O2 and Ag+ based on the GQH catalyzed CL reaction between luminol and H2O2. The silver ions react with GQH, causing the decomposition of GQH and the loss of catalytic activity. The catalytic system has been characterized by CL, absorption spectroscopy, and circular dichroism (CD). Under the optimal conditions, there were wide linear ranges between the CL intensity and the concentrations of H2O2/Ag+. The CL increases linearly from 0.1 μM to 3 mM for H2O2 and decreases linearly from 10 nM to 2 μM for Ag+. The limits of detection are 0.03 μM and 3.33 nM for H2O2 and Ag+, respectively. This method has been used for real sample analysis with satisfactory results.
Sign-in/Register to access full text options 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callDisclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
