阳离子表面活性剂-AuI_2^-体系光谱特性及应用  

SPECTRAL PROPERTIES OF CATIONIC SURFACTANTS-AuI_2^- SYSTEM AND ITS ANALYTICAL APPLICATION

作　　者：罗杨合[1] 蒋治良[1] 李振中[1] 刘庆业[1] 

机构地区：[1]广西师范大学资源与环境学系,广西桂林541004

出　　处：《广西师范大学学报（自然科学版）》2004年第4期61-64,共4页Journal of Guangxi Normal University:Natural Science Edition

基　　金：广西自然科学基金资助项目(014403);广西师范大学博士科研启动基金资助项目

摘　　要：在HCl介质中,AuI-2与阳离子表面活性剂可形成较稳定的缔合微粒,它在560nm产生一个吸收峰,在320,470nm产生2个同步散射峰,在580nm产生1个共振散射峰.在一定条件下,阳离子表面活性剂浓度在0～7.0×10-5mol/L范围内遵循比尔定律,摩尔吸光系数高达1.904×104L·mol-1·cm-1.用于合成样和新洁尔净样品中阳离子表面活性剂的测定,结果满意.In HCl medium,cationic surfactants and AuI^-_2 form stable association particles.It exhibits an absorption peak at 560 nm,two synchronous scattering peaks at 320 nm and 470 nm and a resonance scattering peak at 580 nm.The concentration of cationic surfactants accords with Beer's law in the range of 0～7.0×10^(-5) mol/L.The mole absorption coefficient is 1.904×10~4 L·mol^(-1)·cm^(-1).The method is used to determine the cationic surfactants in real samples and synthetic samples,which obtains satisfactory results.

关 键 词：阳离子表面活性剂 AuI2^- 缔合微粒 分光光度法 共振散射 

分 类 号：O657.61[理学—分析化学]