摘要
确定了一种测定阴离子表面活性剂的方法——分光光度法。通过实验确定了此方法的最佳条件,最大吸收波长为630 nm,阳离子标准溶液(1.0×10-4 mol/L)加量为20 mL,缓冲指示剂的用量为10 mL,静置2 h,温度恒温控制在25℃。同时确定了阴离子表面活性剂的测量范围,应当控制其加量在阳离子表面活性剂加量的一半,工作曲线线性相关系数为0.999 72。并测定了其他常用阴离子表面活性剂的工作曲线,线性相关系数均超过了0.990 00,证明了这种方法应用的普遍性。
In this article,a new method was confirmed to analyze quantitatively the anionic surfactant concentration in EOR by visible spectrophotometry.The best conditions of the method are the followings： maximum wavelength 630 nm;cationic surfactant standard solution（1.0×10-4 mol/L）20mL;buffer indicator 10mL;waiting time 2 hours;temperature 25 ℃.The best concentration range for the anionic surfactant is half of that for the cationic surfactant.The liner correlation coefficient of the working curve is 0.999 72.Many common used anionic surfactants in EOR were measured,the liner correlation coefficients are all（bigger than） over 0.990 00.So,this method can be applied widely.
出处
《日用化学品科学》
CAS
2010年第9期47-50,共4页
Detergent & Cosmetics
