Skip to main content
. Author manuscript; available in PMC: 2015 Mar 31.
Published in final edited form as: Sens Actuators B Chem. 2014 Mar 31;193:552–562. doi: 10.1016/j.snb.2013.11.088

Figure 2.

Figure 2

Figure 2

Calibration curves of blue color intensity (BCI) of various metal oxide sensors as a function of antioxidant (GA) concentration. Metal oxide sensors were made from rutile TiO2, SiO2, ZnO, and ZrO2, ceria, Fe2O3 and Ti(IV)oxo.