摘要
研究铁(Ⅱ)和锑(Ⅲ)对Cr_2O_7^(2-)-I^-动力学反应体系的协同诱导效应,提出协同诱导系数的概念.将此系数引入前述停流FIA-动力学双组分同时测定方法中,有效地补偿了由于双组分间协同效应而引起的对吸光度加合性的偏离,同时线性测定范围亦显著扩大,从而为动力学体系中多组分的测定提供了一种有效的方法.测定了废水、合成样品及标准样品中铁和锑的含量,结果满意.
The synergistic inductive effect of iron(Ⅱ) and antimony(Ⅲ) upon the chromium(Ⅵ)-iodide kinetic reaction systems had been studied, and the concept of synergistic inductive coefficient was defined. The deviations from additivity of absorbance within certain concentration ranges in previous procedures can be compensated effectively, by introducing the synergistic coefficient into the simultaneous determination of a binary mixture with stopped flow-FIA method, and the linear concentration ranges have also been enlarged remarkably. Iron and antimony contents in wastewater, a simulated sample and a zinc standard had been determined, the results are satisfactory.
出处
《化学学报》
SCIE
CAS
CSCD
北大核心
1995年第8期796-800,共5页
Acta Chimica Sinica
