| Full text | |
| Author(s): |
de Campos, Anderson M.
;
Silva, Robson R.
;
Calegaro, Marcelo L.
;
Raymundo-Pereira, Paulo A.
Total Authors: 4
|
| Document type: | Journal article |
| Source: | CHEMOSENSORS; v. 10, n. 11, p. 12-pg., 2022-11-01. |
| Abstract | |
The use of economic methods to design and fabricate flexible copper sensors decorated with bismuth micro/nanodentrites for the detection of lead and cadmium in sweat is demonstrated. The flexible copper sensors were constructed with simple and cost-effective materials; namely, flexible and adhesive conductive copper tape, adhesive label containing the design of a three-electrode electrochemical system, and nail polish or spray as a protective layer. The flexible copper device consisted of a working electrode decorated with bismuth micro/nanodentrites using an electrodeposition technique, a copper pseudo-reference and copper counter electrodes. Under optimal experimental conditions, the flexible sensing platform showed excellent performance toward the detection of lead and cadmium using differential pulse anodic stripping voltammetry (DPAdSV) in a wide linear range from 2.0 mu M to 50 mu M with acceptable reproducibility and repeatability, and limits of detection and quantification of 5.36 and 17.9 mu M for Cd2+ ions and 0.76 mu M and 2.5 for Pb2+ ions. Studies of addition and recovery in spiked artificial sweat sample were performed, with a recovery of 104.6%. The flexible copper device provides a great opportunity for application in wearable perspiration-based healthcare systems or portable sensors to detect toxic metals in biological samples. (AU) | |
| FAPESP's process: | 22/02164-0 - Development of electrochemical sensors modified with hollow carbon nanospheres doped with sulfur and nitrogen for the quantification of drugs in supply water samples |
| Grantee: | Sergio Antonio Spinola Machado |
| Support Opportunities: | Regular Research Grants |
| FAPESP's process: | 16/06612-6 - Printed and implantable biosensor made from biopolymers for long-term monitoring |
| Grantee: | Robson Rosa da Silva |
| Support Opportunities: | Scholarships in Brazil - Post-Doctoral |
| FAPESP's process: | 16/01919-6 - Design and fabrication of nanostructured flexible devices for biomarkers detection |
| Grantee: | Paulo Augusto Raymundo Pereira |
| Support Opportunities: | Scholarships in Brazil - Post-Doctoral |