Ferron逐时络合比色法测定水体系中羟基聚合铝形态的问题评析

Review of the Problems Existed in Determination of Hydroxyl Polyaluminum Species in Water System by Ferron Complexation Timed Spectrophotometry

Ferron(7-碘-8-羟基喹啉-5-磺酸)逐时络合比色法是目前各领域对羟基聚合铝形态开展研究的一项关键技术。全面分析该方法在测定水体系中羟基聚合铝形态研究进展的基础上,主要从Ferron逐时络合比色法测定不同羟基聚合铝形态的原理,Al-Ferron显色体系的摩尔吸光系数(ε)及其与羟基聚合铝形态测定的关系,Al-Ferron络合显色的影响因素以及其测定结果的分析,综合评述了目前Ferron逐时络合比色法在实际应用中存在的亟待澄清的问题。以期为研究者提供有借鉴意义的参考。

Ferron （7-iodo-8-hydroxyquinoline-5 to study the hydroxyl polyaluminum species in sul{onic acid） timed spectrophotometry is a key technology various fields at present. In this paper, on the basis of a intensive study on the progress of the application of this method in analysis of the hydroxyl polyaluminum species, a comprehensive review was given, which of the focus was on the existing problems that need to be urgently clarified. The review includes three major topics： （1） the principle of the determination of different forms of the hydroxyl polyaluminum species by Ferron timed spectrophotometry~ （2） the molar absorptivity （e） of the A1-Ferron colorimetric system and its relationship with the hydroxyl polyaluminum species determination~ （3） the factors that influence A1-Ferron complexation and their determination results. It is the authors~ hope that this review can provide researchers with a valuable referenro_