Evaluation of the electrochemical sensor based on reduced graphene oxide and antimony nanoparticles for the determination of lead and cadmium in tea samples

• Grant number: 18/09053-3
• Support Opportunities: Scholarships in Brazil - Scientific Initiation
• Start date: November 01, 2018
• End date: October 31, 2019
• Field of knowledge: Physical Sciences and Mathematics - Chemistry - Analytical Chemistry
• Principal Investigator: Ivana Cesarino
• Grantee: Erik Weber Nunes
• Host Institution: Faculdade de Ciências Agronômicas (FCA). Universidade Estadual Paulista (UNESP). Campus de Botucatu. Botucatu , SP, Brazil

Abstract

In this research project, the determination of heavy metals in tea samples, as lead and cadmium will be analyzed by a modified sensor of reduced graphene oxide (rGO) with nanoparticles of antimony (SbNPs). Tea is one of the most consumed drinks, in Brazil and in the world, and the presence of heavy metal has already been verified in some samples. There is no legislation to delineate safe levels of heavy metal in tea samples. In order to avoid the consequences of bioaccumulation of the present heavy metals, there is the need for proper analysis and control. Thus, this project aims at the development and characterization of an electrochemical sensor based on the synergistic combination between rGO and SbNPs for the simple, rapid, direct and sensitive analysis of cadmium and lead ions in tea samples.

Scientific publications

(References retrieved automatically from Web of Science and SciELO through information on FAPESP grants and their corresponding numbers as mentioned in the publications by the authors)

NUNES, ERIK W.; SILVA, MARTIN K. L.; CESARINO, IVANA. Evaluation of a Reduced Graphene Oxide-Sb Nanoparticles Electrochemical Sensor for the Detection of Cadmium and Lead in Chamomile Tea. CHEMOSENSORS, v. 8, n. 3, p. 12-pg., 2020-09-01. (18/09053-3, 17/24274-3)