摘要
在ｐ Ｈ＝ ７ 的 Ｎ Ｈ４ Ａｃ 缓冲介质中， Ｃ Ｔ Ｍ Ａ Ｂ 微乳液存在下， Ｆｅ（ Ⅲ） 和铬天青 Ｓ 生成蓝色络合物，λｍａｘ＝ ６５５ｎｍ ，ε＝ １ ．４０ ×１０５ Ｌ·ｍｏ Ｌ－ １·ｃｍ － １ ，铁含量在０ ～６μｇ／２５ｍ Ｌ 内符合比尔定律，方法用于工业己内酰胺中铁的测定，结果满意。
In the presence of cetyltrimethyl ammonium bromide microemulsion,Fe(Ⅲ) was reacted with chrome azurol S and a blue 2:1 complex was formed in ammonium acetate buffer solution(pH=7).The molar absorptivity is 1.40×10 5L·mol -1 ·cm -1 at 655nm.Beer's Law is obeyed in the range of 0～6μg/25ml.This method can be applied to the determination of iron in industrial caprolactam with satisfactory results.
出处
《云南化工》
CAS
1999年第1期44-45,共2页
Yunnan Chemical Technology
