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提出以Ｆｅ（３＋）（Ｎｄ（３＋）－ＣＡＳ－ＣＰＢ－Ｃ２Ｈ５ＯＨ作为不经分离、高敏、连续光度配合滴定混合物中Ｆｅ（３＋）和Ｎｄ（３＋）的多元胶束配合指示体系。滴定Ｆｅ（３＋）和Ｎｄ（３＋）的适宜ｐＨ分别为２．３～３．２和６．０～８．６。用ＥＤＴＡ目视滴定Ｆｅ（３＋）时，终点处由蓝紫变粉红色，对比度大（Δλ＝１３０ｎｍ）、灵敏度高（配合物摩尔吸光系数ε（６３０）＝１．１４×１０５Ｌ·ｃｍ（－１）·ｍｏｌ（－１），至少可检测０．４μｇ／ｍＬ，滴定线性范围为０～２．８μｇ／ｍＬ。线性相关系数为０．９９９４；目视滴定Ｎｄ（３＋）时，终点处由绿色变橙黄，Δλ＞１８０ｎｍ，ε（６３０）＝７．６×１０４，至少可检测１μｇ／ｍＬ，滴定线性范围０～３．７μｇ／ｍＬ，线性相关系数０．９９９４。对于铁钕硼混合物样品则不经分离在６３０ｎｍ处连续光度滴定，可更精密、高敏、准确地确定终点，变异系数１．７６％～２．８６％，标准加入回收率９６％～１０４％，且简便、快速。
A multi-micellar complexing system for the titration of Fe (3+) and Nd (3+) with Fe (3 +) (Nd (3 +) - CAS-CPB-C2H5OH was proposed. 3+) and Nd (3+) were 2.3 ~ 3.2 and 6.0 ~ 8.6, respectively. When titration of Fe (3+) with EDTA was carried out, the end point was changed from blue-purple to pink with large contrast (Δλ = 130nm), high sensitivity (molar absorptivity ε (630) = 1.14 × 105L · cm -1 -1 mol -1), at least 0.4μg / mL was detected.The linear range of titration was 0 ~ 2.8μg / mL. The linear correlation coefficient was 0.9994. When visual titration of Nd (3+), the endpoint changed from green to orange, Δλ> 180nm and ε (630) = 7.6 × 104. 1μg / mL, the linear range of titration was 0 ~ 3.7μg / mL and the linear correlation coefficient was 0.999 4. For the sample of iron, neodymium and boron mixture without continuous separation at 630nm photometric titration can be more precise, high sensitivity and accurate determination of the end of the coefficient of variation of 1.76% ~ 2.86%, the standard recovery of 96% to 104 %, And simple, fast.