N-烯丙基-N'-(对苯磺酸钠)硫脲光度法测定铁

Determining Iron Through Spectrochemical Analysis of N-allyl-N'-Sodium P-Benzenesulfonic Acid Sulfourea

本文研究了Fe（Ⅲ）与新试剂N-烯丙基-N’－（对苯磺酸钠）硫脲显色反应的条件。试验发现：在PH4的HAC－NaAC缓冲的介质中，Fe（Ⅲ）与试剂形成1：2的配合物，配合物的最大吸收波长为354nm，其摩尔吸光系数。＝1．25×104，Fe（Ⅲ）浓度在0．5～100μg／25ml范围内符合比耳定律，应用此法测定铝合金、铝镁合金及锌合金中的微量铁，获得满意结果。

This paper discusses that in HAC-NaAC medium(pH4),Fe(Ⅲ) and the new reagent N-allyl-N'-Sodium P-benzenesulfonic acid sulfourea will form a complex in the ratio of 1: 2,with λ max= 354m and ε= 1.25×10 4.In the range from 0.5 to 100 μ g/25mL,Fe(Ⅲ) is in accotrica with the Beer Law.This method Can be used to determine iron and bring forth satifactory results.