脂肪醇聚氧乙烯醚硫酸钠(AES)是一类阴-非两性型表面活性剂.以亚甲基蓝作为指示剂,用十六烷基三甲基溴化铵(CTMAB)作为标准溶液测定 AES 表面活性剂阴离子活性物含量,实验测得值与实际参考样品误差较小.另外还探讨了非离子表面活性剂、聚合物与无机盐对测定结果的影响,实验结果表明无机盐体积的增加使得测定的结果产生了一定的偏差;随着聚合物浓度浓度的增加,测定的结果有偏高的趋势;非离子表面活性剂质量分数的增加对实验结果没有明显的影响.%Fatty alcohol polyoxyethylene ether sodium sulphate (AES) is a kind of anionic-nonionic amphoteric surfactant. In this paper, using methylene blue as indicator, cetyltrimethylammonium bromide (CTMAB) as a standard solution, anionic active content in AES surfactant was determined. The difference between the experimental value and the actual reference value was small. In addition, the effect of other compounds (such as nonionic surfactants, polymers and inorganic salts) on the determination result was also discussed. The experimental results showed that the increase of the volume of the inorganic salt made the deviation of the measured result. With the increase of the concentration of the polymer, the measurement result tended to be high. The increase of the nonionic surfactant mass fraction had no obvious effect on the experimental result.
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