Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
1237158 | Spectrochimica Acta Part A: Molecular and Biomolecular Spectroscopy | 2005 | 4 Pages |
Abstract
We established a simple and selective fluorimetric method for the determination of ascorbic acid (AA) with the novel mono-[6-N(4-carboxy-phenyl)]-β-cyclodextrin (ACD). The method is based on the fluorescence intensity of ACD decreases as the ACD–AA supramolecular complexes form. The fluorescence intensity is measured at excitation and emission wavelengths of 270 and 352 nm, respectively. Under optimum condition, a linear relationship is obtained between the fluorescence intensity and the concentration of AA in the range of 0.05–8.0 μg ml−1. The detection limit is 0.012 μg ml−1. The method has been applied to the direct analysis of AA in real samples with satisfactory results.
Related Topics
Physical Sciences and Engineering
Chemistry
Analytical Chemistry
Authors
Lun Wang, Li Zhang, Shike She, Feng Gao,