Abstract
Water-soluble and stable CdTe quantum dots (QDs) capped with glutathione (GSH) and thioglycolic acid (TGA) were synthesized (denoted as GSH-TGA-CdTe) and the electrochemiluminescence (ECL) behavior of the QDs was investigated. As a result of specific interaction between the GSH and Pb2+, the ECL of the QDs was selectively reduced in the presence of Pb2+. Due to the low ECL intensity of QDs capped with GSH alone, TGA as another capping agent was introduced to improve the sensitivity. On the basis of the quenching effect on the ECL of GSH-TGA-CdTe QDs, a sensitive and selective method for the determination of Pb2+ was developed and a detection limit of 0.26nM was obtained, which was lower than previous report.
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.
