Acessibilidade / Reportar erro
Technical Note • Quím. Nova 48 (2) • 2025 • https://doi.org/10.21577/0100-4042.20250031   copy

DEVICE FOR CALIBRATING ELECTROCHEMICAL DISSOLVED OXYGEN SENSORS

Authorship SCIMAGO INSTITUTIONS RANKINGS

Sensor calibration for dissolved gas is a critical and necessary step to ensure consistent sensor response over time and under different conditions. In this work, we describe a 3D printed device that facilitates the calibration of gas sensors. The device effectively maintained gas concentration in the solution for at least 2 h. Analytical curves were constructed in the pH range of 2 to 12, yielding determination coefficients surpassing 0.98. The chosen method proved suitable for the calibration of the sensors. Furthermore, using accurate and reliable reference sensors contributed to obtaining precise and trustworthy measurements.

Keywords:
amperometric sensor; oxygen quantification; oxygen reduction reaction; microcontrollers; 3D printing

Sociedade Brasileira de Química Secretaria Executiva, Av. Prof. Lineu Prestes, 748 - bloco 3 - Superior, 05508-000 São Paulo SP - Brazil, C.P. 26.037 - 05599-970, Tel.: +55 11 3032.2299, Fax: +55 11 3814.3602 - São Paulo - SP - Brazil
E-mail: quimicanova@sbq.org.br
Acompanhe os números deste periódico no seu leitor de RSS