吖黄素盐酸盐共振瑞利散射光谱法测银离子含量  

Determination of Silver Ions by Rayleigh Scattering Spectroscopy with Acriflavine Hydrochlorde

作　　者：钟曦 赵金花 姚龙凤 徐红 李佳豪 万鑫 ZHONG Xi;ZHAO Jin-hua;YAO Long-feng;XU Hong;LI Jia-hao;WAN Xin(Basic Medical College,Guizhou Medical University,Guizhou Guiyang 550025;Clinical College,Guizhou Medical University,Guizhou Guiyang 550025,China)

机构地区：[1]贵州医科大学基础医学院,贵州贵阳550025 [2]贵州医科大学临床学院,贵州贵阳550025

出　　处：《广州化工》2018年第20期72-74,共3页GuangZhou Chemical Industry

基　　金：贵州医科大学大学生创新创业项目(201610660009);贵阳市科技计划项目(筑科合同[2016001]001号)

摘　　要：提出了共振瑞利散射光谱技术(RRS)测定Ag^+含量的新方法。在p H为2. 87～8. 95的Britton-Robinson(B-R)缓冲溶液中,吖黄素盐酸盐(AH,Acriflavine hydrochlorde)与Ag^+结合生成配合物,使溶液的共振瑞利散射(RRS)增强,并且在321 nm、489 nm处的散射峰强度显著增加。以321 nm为测定波长,Ag^+的浓度在0. 05～10 mg/L范围内,与RRS强度变化有良好的线性关系,对Ag^+的检出限(3σ)达0. 019 mg/L。研究了反应的适宜条件和影响因素,并用于环境水样中Ag^+含量的测定,回收率为93. 5%～106%。A new method for the determination of silver ion content by resonance Rayleigh scattering spectroscopy （RRS ） was proposed. In a Britton-Robinson （B-R ） buffer solution with pH value of 2.87~8.95, the acriflavine hydrochlorde （AH ） reacted with Ag ＋ to form a coordination compound, which can enhance the intensity of resonance Rayleigh scattering （RRS ）. And the intensity of the scattering peak at 321 nm and 489 nm was significantly increased. Using 321 nm as the measurement wavelength, the concentration of Ag ＋ was in the range of 0.05~10 mg/L, which had a good linear relationship with the change of RRS intensity. The detection limit （3σ ） of Ag ＋ was 0.019 mg/L. The suitable conditions and influencing factors of the reaction were studied and used for the determination of the Ag ＋ content in the environmental water samples. The recovery rate was 93.5% to 106%.

关 键 词：共振瑞利散射 吖黄素盐酸盐 银离子 

分 类 号：O6[理学—化学]