As shown in Figure 3 , the B value shows a decreasing trend with increasing omethoate concentration (0.5, 1.0, 5.0, 10, 50 μg/L), which is due to the competition between omethoate molecules and the capture probe with respect to binding to the catalytic signal probe.
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A Smartphone Colorimetric Sensor Based on Pt@Au Nanozyme for Visual and Quantitative Detection of Omethoate.
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