摘要
在pH=10的NH3H2O-NH4Cl缓冲溶液中,巯基乙酸在dE/dt~E曲线上产生敏锐切口,当其浓度在9.0×10-5~2.4×10-4mol/l时,切口深度与其浓度成线性关系,可以直接测定巯基乙酸,结果与碘量法基本一致.本法准确度良好,操作简便、快速,用于烫发水中巯基乙酸的测定取得满意的结果。
The determination of thioglycollic acid was carried out based on relations between the incision appearedat curve of dE/dt^E in the buffer solution of NH3H2O-NH4Cl (pH= 10) and its concentration (9. 0×10-5 ~ 2. 4 ×10-4mol/l ). So thioglycollic acid can be directly determined. The results is agreement with the iodine titrationmethod. The mthod has been applied to the determination of thioglycollic acid in the cold wave
出处
《日用化学工业》
CAS
CSCD
北大核心
1997年第1期48-49,共2页
China Surfactant Detergent & Cosmetics