Carbon dioxide gas sensor based on optical control of color in liquid indicator

[摘要] A new optical carbon dioxide sensor based on the change in glow intensity of the Europium-III complex, caused by CO2absorption to various pH-indicators (thymol blue, phenol red and cresol red) of carbon dioxide was developed, and its sensitive properties were studied.

[发布机构] National Research Nuclear University, MEPhI (Moscow Engineering Physics Institute), Kashirskoe shosse 31, Moscow; 115409, Russia^1

[关键词] Carbon dioxide gas sensor;Carbon dioxide sensors;CO2 absorption;Optical control;Phenol red;Sensitive properties;Thymol blues;Various pH