title: A sensitive and simple method for the determination of chondroitin sulfate a with crystal violet by resonance rayleigh scattering technique.
abstract: Resonance Rayleigh scattering (RRS) spectra resulting from interaction between chondroitin sulfate A (CSA) and crystal violet (CV) have been investigated and applied to the determination of CSA. Though the intensity of RRS has proved very weak for CSA and CV, respectively, it can be greatly enhanced when both interact and form a supramolecular complex. A new RRS spectrum appears with a maximum scattering peak at 328 nm. In this paper, the optimum conditions of the interaction, influencing factors, and the relationship between the relative intensity of RRS (DeltaI) and the concentration of CSA have been thoroughly investigated. A new method of determination for the trace amount of CSA has been developed, which combines a simple procedure, high sensitivity, and a low detection limit of 4.8 ng/mL. It has been applied with satisfactory results to the determination of CSA in CSA injection samples and synthetic samples.
authors.affiliation: School of Chemistry and Chemical Engineering, Southwest China Normal University, Chongqing, China.
authors.forename: Taishan
authors.initials: T
authors.lastname: Li
authors.forename: Shaopu
authors.initials: S
authors.lastname: Liu
authors.forename: Zhongfang
authors.initials: Z
authors.lastname: Liu
authors.forename: Xiaoli
authors.initials: X
authors.lastname: Hu
mesh_terms: D002138:Calibration; D002809:Chondroitin Sulfates / Q000032:analysis* / Q000737:chemistry; D005840:Gentian Violet / Q000737:chemistry*; D012542:Scattering, Radiation; D012680:Sensitivity and Specificity; D013050:Spectrometry, Fluorescence
chemical_list: D002809:Chondroitin Sulfates; D005840:Gentian Violet