It can be seen that with the increase of the color development reaction time, the difference of the absorbance values showed a trend of first increasing and then slowly decreasing, and the difference of the absorbance values reached the maximum at 5 min.
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Ni<sub>3</sub>V<sub>2</sub>O<sub>8</sub> nanoflower mimetic enzyme constructs a dual-signal system for ascorbic acid detection.
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