2025年 06期

Degradation Efficiency of Copper(II)-Sodium Sulfite Advanced Reduction System on Sodium Diatrizoate


摘要(Abstract):

为了实现在厌氧条件下泛影酸钠的高效降解,构建铜(Ⅱ)-亚硫酸钠高级还原体系,通过单因素实验分析、自由基抑制实验和探针实验以及产物降解分析,探究铜(Ⅱ)-亚硫酸钠体系降解泛影酸钠的效能与机制。结果表明:在厌氧环境下铜(Ⅱ)-亚硫酸钠体系降解泛影酸钠最佳反应条件是体系pH为7,泛影酸钠的初始浓度为2.5μmol/L,铜(Ⅱ)的浓度为0.15 mmol/L,亚硫酸钠的浓度为1.0 mmol/L,反应60 min后泛影酸钠的降解率达到92.4%;铜(Ⅱ)-亚硫酸钠体系降解泛影酸钠的主要活性物种是铜(I),降解路径主要是发生脱碘反应;碳酸氢根离子能够显著抑制该体系对泛影酸钠的降解。

关键词(KeyWords):铜离子;亚硫酸钠;高级还原体系;厌氧环境;泛影酸钠

基金项目(Foundation):国家自然科学基金项目(52100088,52300089);; 山东省博士后创新项目(SDCX-ZG-202202002)

作者(Author):闫琪雅,孙绍芳,高明昌,邱琪,邱立平

DOI:10.13349/j.cnki.jdxbn.20250522.001

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