抑制荧光动力学法测定环境中痕量对硝基苯胺

Determination of Trace p-Nitroaniline by Inhibitory Kinetic Spectrofluometric Method

在硫酸介质中，痕量对硝基苯胺对溴酸钾氧化罗丹明6G使其荧光猝灭具有抑制作用，由此建立了动力学荧光法测定痕量对硝基苯胺的分析新方法。考察了温度、反应时间、各种试剂条件对抑制反应的影响。在最佳实验条件下，方法线性范围为12～160ng／mL，检出限为10．08ng／mL。该方法应用于环境水样、土壤、大气等实际样品测定，回收率为96．8％～104．7％。

A kinetic fluorimetric metho The proposed method is based on the d was established for the determination of trace p-Nitroaniline. inhibitory effect of p-Nitroaniline on the oxidation reaction of acid medium. It is shown that under the optimum ear range of the proposed method are 10.08 ng/mL has been used to determine trace p-Nitroaniline in 4.7%.