摘要
在0.05mol/LHCl和2.0mg/mLTritonX-100介质中,氯化钡与硫酸链霉素(STP)在加热条件下反应生成BaSO4微粒,导致溶液的共振瑞利散射(RRS)强度急剧增强,并产生新的RRS光谱,最大散射峰位于338nm附近.在0.01～4.0μg/mL浓度范围内,反应体系RRS强度与药物浓度成正比.反应具有较高的灵敏度,对STP的检出限(3σ)为4.8ng/mL.研究了适宜的反应条件和影响因素,并考察了共存物质的影响,表明方法具有较好的选择性,可用于蜂蜜中STP残留的检测.
In a mixed medium of 0.05 mol/L HCl and 2.0 mg/mL triton X-100, streptomycin sulfate reacted with barium chloride to form barium sulphate particles. As a result, resonance Rayleigh scattering （RRS） was enhanced greatly and new RRS spectra appeared. The maximum scattering wavelength of RRS was located at 338 nm. The increment of scattering intensity （A1） was directly proportional to the concentration of STP in the ranges of 0.01--4.0 ug/mL. The method exhibited high sensitivity and the detection limits （3a） for STP was 4. 8 ng/mL. The optimum reaction conditions, the inflUencing factors and the effects of coexisting substances were discussed. The method developed proved to be highly sensitive, simple and quick. When it was applied to determine the residual streptomycin sulfate in honey, satisfactory results were obtained.
出处
《西南大学学报（自然科学版）》
CAS
CSCD
北大核心
2008年第9期62-65,共4页
Journal of Southwest University(Natural Science Edition)
基金
四川出入境检验检疫局资助项目(SK0607)
重庆市科委自然科学基金计划资助项目(CSTC,2007BB1359)
关键词
共振瑞利散射
硫酸链霉素
氯化钡
蜂蜜
resonance Rayleigh scattering
streptomycin
barium chloride
honey
