阳离子表面活性剂与四苯硼钠反应的共振瑞利散射光谱及其分析应用  

Resonance Rayleigh Scattering Spectra of Interaction of Sodium Tetraphenylboron with Cationic Surfactants and Their Analytical Application

作　　者：王明霞[1] 刘忠芳[1] 胡小莉[1] 刘绍璞[1] 

机构地区：[1]西南师范大学化学化工学院,重庆400715

出　　处：《分析化学》2005年第10期1427-1430,共4页Chinese Journal of Analytical Chemistry

基　　金：国家自然科学基金资助项目(No.20175018)

摘　　要：研究了在HAc-NaAc缓冲溶液中5种阳离子表面活性剂(CS)与四苯硼钠(NaTPB)反应的共振瑞利散射(RRS)光谱,考察了其光谱特征、影响因素、适宜的反应条件和共存物质的影响.发现5种CS与NaTPB形成离子缔合物时,均使RRS强度显著增强,并具有相似的RRS光谱特征,最大散射波长均位于284 nm左右.在一定范围内,CS的浓度与散射强度成正比.方法简便,快速,灵敏度高,并具有较好的选择性,对于不同CS检出限在2.23～5.62 μg/L;用于水样分析,结果令人满意.Resonance Rayleigh scattering （RRS） spectra for the interaction of sodium tetraphenylboron （NaTPB） with five cationic surfactants （CS） in the HAc-NaAc buffer solution were studied. The spectra characte-ristics, the effect factors, optimum conditions of the reaction and the influence of foreign substances have been investigated. It is shown that five cationic surfactants can bind with TPB- to form the ion-associations, resulting in the great enhancement of RRS intensity and new RRS spectra appeared. The maximum RRS peaks are all located at 284 nm for the five reaction products. The intensity of △IRRs is directly proportional to the concentration of CS in a certain concentration range. The method has high sensitivity, and the detection limits are in the range of 2.2 -5.6μg/L for the different CS systems. The procedure is easy and rapid, and has been applied to the determination of CS in some water samples with satisfactory results.

关 键 词：四苯硼钠 阳离子表面活性剂 共振瑞利散射 共振瑞利散射光谱 反应条件 分析应用 光谱特征 散射强度 离子缔合物 缓冲溶液 

分 类 号：O643.1[理学—物理化学] O657.34[理学—化学]