Resonance Rayleigh scattering and resonance nonlinear scattering of the palladium(II)-acetazolamide chelate with eosin Y and their analytical application

作者：Li, Junbo; Wang, Jinghua; Chang, Honghong; Wei, Wenlong^*

来源：Spectroscopy Letters, 2017, 50(9): 494-500.

DOI：10.1080/00387010.2017.1367308

• Acetazolamide
• eosin Y
• palladium(II)
• resonance nonlinear scattering
• resonance Rayleigh scattering

A simple, rapid, and convenient method based on ion association for the determination of acetazolamide has been developed. Acetazolamide can react with palladium(II) to form cationic chelate at sodium acetate-acetic acid buffer solution, which can further react with eosin Y to form an ion association complex. As a result, the resonance Rayleigh scattering, second-order scattering, and frequency doubling scattering intensities are enhanced. Analytical wavelengths of resonance Rayleigh scattering, second-order scattering, and frequency doubling scattering located at 298, 558, and 338nm, and the linearity range are 0.014-2.5, 0.034-2.5, and 0.119-2.4 mu gmL(-1) respectively. In addition, the optimum conditions and the effect of coexisting substances are investigated. Besides, the structure of ion association complex, the reaction mechanism and the reasons for the enhancement of scattering are discussed through infrared spectra, absorption spectra, and quantum chemical calculations.

• 出版日期2017
• 单位长治医学院; 太原理工大学