Figure 6 c shows a clear trend along the main axis, similar to, although more pronounced when compared with the AZI and CLAR PCA plots.
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Nanostructured Metal Oxide Sensors for Antibiotic Monitoring in Mineral and River Water.
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When the considered matrix was MW, similar footprints regarding AZI, CLAR, and ERY were observed for the TiO 2 (50% O 2 ) sensor, with the measured impedance magnitude presenting significant sensitivity at lower frequencies (1–100 Hz) with a decreasing trend ( Figure 4 ).