Design and Fabrication of Flexible Copper Sensor Decorated with Bismuth Micro/Nanodentrites to Detect Lead and Cadmium in Noninvasive Samples of Sweat
Journal article, 2022

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 μM to 50 μM with acceptable reproducibility and repeatability, and limits of detection and quantification of 5.36 and 17.9 μM for Cd2+ ions and 0.76 μM 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.

bismuth micro/nanostructures

lead

cadmium

sweat

flexible sensor

electrochemical detection

copper tape

Author

Anderson M. de Campos

Ludwig Maximilian University of Munich (LMU)

Robson Rosa Da Silva

Chalmers, Chemistry and Chemical Engineering, Applied Chemistry

Marcelo L. Calegaro

University of Sao Paulo (USP)

Paulo A. Raymundo-Pereira

University of Sao Paulo (USP)

Chemosensors

22279040 (eISSN)

Vol. 10 11 446

Subject Categories

Analytical Chemistry

Textile, Rubber and Polymeric Materials

Other Electrical Engineering, Electronic Engineering, Information Engineering

DOI

10.3390/chemosensors10110446

More information

Latest update

11/24/2022