AI Article Synopsis
- Researchers developed a method for determining paeonol using aqueous PMMA-capped CdSe/ZnS quantum dots as fluorescence probes.
- The method is based on the fluorescence quenching, showing a linear relationship between the quenching and paeonol concentration within the range of 25.04-175.2 mg L(-1), with a high correlation coefficient of 0.9986.
- The detection limit was found to be 0.017 mg L(-1), and the method effectively measured paeonol concentration in ointments, aligning with the stated values.
Article Abstract
Aqueous polymethylmethacrylate (PMMA)-capped CdSe/ZnS quantum dots were used as fluorescence probes for paeonol determination. Based on the fluorescence quenching of aqueous CdSe/ZnS quantum dots caused by paeonol, a simple, sensitive and rapid method was developed. Under the optimal conditions, with excitation and emission wavelengths at 350 nm and 620 nm, respectively, the calibration plot of F0-F with concentration of paeonol was linear in the range of 25.04-175.2 mg L(-1) with correlation coefficient of 0.9986. The limit of detection was 0.017 mg L(-1). The concentration of paeonol in paeonol ointment was determined by the proposed method and the result agreed with the claimed value. Furthermore, the possible fluorescence quenching mechanism was discussed.
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| http://dx.doi.org/10.1016/j.saa.2010.11.023 | DOI Listing |
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