分光光度法测定乙二醇中的钼含量

Determination of Trace Molybdenum in Ethylene glycol by spectrophotometry

中文关键词:  分光光度法  钼  乙二醇

英文关键词:spectrophotometry  molybdenum  ethylene glycol

中文摘要:

      提出了一种用分光光度法测定乙二醇中痕量钼的新方法.该方法是基于在强酸性溶液中,钼与水杨基荧光酮(SAF)和阳离子表面活性剂溴化十六烷基三甲铵(CTMAB)发生高灵敏度的显色反应,生成稳定的配合物,其λ_max为524nm,表观摩尔吸光系数ε₅₂₄为1.03×10⁵.比较详细地研究了各种实验条件的影响.钼在乙二醇溶液中的回收率为94%～98%,结果满意.

英文摘要:

      A new method for determination of trace molybdenum in ethylene glycol by spectrophotometry was proposed. This method is based on molybdenum react sensitivey with salicyl fluorine and cetyl trimethyl ammonium bromide, a cationic surfactant, to form the stable complexes in the strong acid solution.Its λ_max is 524 nm and its apparent ε₅₂₄ is 1.03×10⁵. The feat condition was studied in detail.The recovery of molybdenum in ethylene glycol ranged from 94% to 98%.The proposed method gave a satisfactory result for the determination of molybdenum in ethylene glycol.