Related Experiment Video
Updated: May 31, 2026

Preparation, Purification, and Characterization of Lanthanide Complexes for Use as Contrast Agents for Magnetic Resonance Imaging
Published on: July 21, 2011
Study on the fluorescence enhancement in Lanthanum(III)-carminic acid-cetyltrimethylammonium bromide system and its
Feng Wang1, Wei Huang, Kexiang Li
1Department of Chemistry, Zaozhuang University, Zaozhuang, Shandong 277160, PR China. wf332@uzz.edu.cn
Abstract:
A fluorescent enhancement system carminic acid (CA)-La3+-CTAB is found and based on this finding a new fluorimetric method for the determination of CA is developed. Under optimized conditions, the enhanced intensities of fluorescence are quantitatively in proportion to the concentrations of CA in the range of 0.01231-12.31 μg mL(-1). The detection limit is 10.92 ng mL(-1). Compared with other methods that have been reported to determine CA, this method has high sensitivity, stability and wide linear range. In addition, the luminescence mechanism indicates that the complex of La3+-CA (1:2) forms and solubilizes in CTAB micelle.
More Related Videos
Related Concept Videos
Photoluminescence: Applications
Variables Affecting Phosphorescence and Fluorescence

