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. 2021 Nov 17;9:774486. doi: 10.3389/fchem.2021.774486

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Copyright © 2021 Wan, Zhao, Deng, Chen, Xi and Wang.

This is an open-access article distributed under the terms of the Creative Commons Attribution License (CC BY). The use, distribution or reproduction in other forums is permitted, provided the original author(s) and the copyright owner(s) are credited and that the original publication in this journal is cited, in accordance with accepted academic practice. No use, distribution or reproduction is permitted which does not comply with these terms.

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(A) Absorbance spectra obtained in the mixture of NGQDs + H₂O₂ + TMB in the presence of different concentrations of ACP (0–5 mU/ml). (B) Linear calibration plot for colorimetric detection of ACP. Insets are photographs of the corresponding solutions (from low to high concentrations of ACP). (C) The fluorescence spectra of NGQDs obtained in the mixture of NGQDs + H₂O₂ + TMB in the presence of different concentrations of ACP (0–5 mU/ml). (D) The linear calibration plot for ACP detection in fluorescent detection.