硅钨酸与盐酸巴马汀相互作用光谱研究及其分析应用  

Study on Spectra of Interaction between Silicotungstic Acid and Palmatine Hydrochloride and Its Analysis Application

作　　者：李华春[1] 覃明丽[1,2] 谭克俊[1] 

机构地区：[1]发光与实时分析教育部重点实验室西南大学化学化工学院,重庆400715 [2]南充农产品质量监测检验中心,南充637000

出　　处：《化学学报》2012年第6期747-752,共6页Acta Chimica Sinica

基　　金：国家自然科学基金(No.20877063);西南大学大型仪器设备开放基金(No.201133)资助项目~~

摘　　要：在pH为0.91的HCl-NaOAc缓冲介质中,盐酸巴马汀与硅钨酸通过静电相互作用导致共振光散射信号显著增强,最大散射波长为297 nm,增强的散射信号强度与盐酸巴马汀浓度在0.09～3.2μg/mL范围内呈线性关系,据此建立了盐酸巴马汀的共振光散射分析方法,检测限为9.1 ng/mL.实验考察了pH、离子强度对体系的影响,研究了体系紫外吸收光谱及荧光光谱,讨论了共振光散射增强机理.该方法用于黄藤素片、黄藤素胶囊及血清样品中盐酸巴马汀含量测定,RSD≤4.2%.A novel resonance light scattering （RLS） method for the determination of palmatine hydrochlo ride （Pall） has been developed based on the largely enhanced RLS signals at 297 nm due to the interaction between Silicotungstic acid （STA） and Pall by electrostatic force in the pH 0.91 HCINaOAc medium. The linear range of Pall is 0.09-3.2 ug/mL. The limit of detection （LOD） is 9.1 ng/mL. In this work, the effects ofpH and ionic strength on interaction were investigated. At the same time, the UV spectra, the fluorescence spectra and the reaction mechanism of system were also investigated. This method has been applied suc cessfully for the determination of Pail in pharmaceutical and blood serum samples with RSD≤4.2%.

关 键 词：共振光散射 盐酸巴马汀 硅钨酸 

分 类 号：R96[医药卫生—药理学]