过一硫酸氢钾/高铁酸钾双氧化体系对6PPDQ的降解机制及影响因素

doi:10.16178/j.issn.0528-9017.20250224

浙江农业科学 ›› 2026, Vol. 67 ›› Issue (10): 2525-2531.DOI: 10.16178/j.issn.0528-9017.20250224

过一硫酸氢钾/高铁酸钾双氧化体系对6PPDQ的降解机制及影响因素

于海斌¹^,²(), 吴楠楠², 齐沛沛², 顾成波¹(), 王新全²()

^1.东北林业大学化学化工与资源利用学院，森林植物生态学教育部重点实验室，林业生物制剂教育部工程研究中心，黑龙江省林源活性物质生态利用重点实验室，黑龙江哈尔滨 150040
^2.浙江省农业科学院农产品质量安全与营养研究所，浙江杭州 310021

收稿日期:2025-03-25 出版日期:2026-10-11 发布日期:2026-10-19
通讯作者: 顾成波,王新全
作者简介:王新全，Email：wangxq@mail.zaas.ac.cn。
顾成波，Email：dilisatis@163.com
于海斌，研究方向为污染物高级氧化控制技术。E-mail：yuhaibin148@163.com。
基金资助:
浙江省“尖兵”“领雁”科技计划项目(2023C02038);高等学校学科创新引智计划(B20088);黑龙江头雁创新团队计划（林木遗传育种创新研究团队）;国家自然科学基金(21607133)

Degradation mechanism and influencing factors of 6PPDQ by the potassium peroxymonosulfate/potassium ferrate（Ⅵ）dual-oxidant system

YU Haibin¹^,²(), WU Nannan², QI Peipei², GU Chengbo¹(), WANG Xinquan²()

^1.Key Laboratory of Forest Plant Ecology，Ministry of Education，Engineering Research Center of Forest Bio-preparation，Ministry of Education，Heilongjiang Provincial Key Laboratory of Ecological Utilization of Forestry-based Active Substances，College of Chemistry，Chemical Engineering and Resource Utilization，Northeast Forestry University，Harbin 150040，Heilongjiang
^2.Institute of Agro-product Safety and Nutrition，Zhejiang Academy of Agricultural Sciences，Hangzhou 310021，Zhejiang

Received:2025-03-25 Online:2026-10-11 Published:2026-10-19
Contact: GU Chengbo,WANG Xinquan

摘要/Abstract

摘要：

本研究系统探究了过一硫酸氢钾/高铁酸钾［PMS/Fe（Ⅵ）］双氧化体系对6PPDQ的降解机制及影响因素。结果表明，PMS/Fe（Ⅵ）体系在降解6PPDQ过程中表现出显著的协同作用，其降解率远高于单独的过一硫酸氢钾（PMS）或高铁酸钾［Fe（Ⅵ）］体系。通过调节PMS与Fe（Ⅵ）的投料比、pH值和反应温度等条件，能够显著提升6PPDQ的降解率。在pH值为8、温度为45 ℃、PMS与Fe（Ⅵ）物质的量之经为1∶1的条件下，6PPDQ可在30 min内去除98%。自由基猝灭试验和电子顺磁共振波谱学（EPR）分析表明，单线态氧（¹O₂）和高价铁物种［Fe（Ⅳ）/Fe（V）］在降解过程中起主导作用，而羟自由基（·OH）的贡献相对较小。此外，Fe（Ⅵ）能够明显活化PMS，产生额外的活性氧，探针试验也进一步证实，PMS不仅能够通过自身分解产生自由基，还能够促进Fe（Ⅵ）生成高价铁物种，从而增强体系的氧化能力。总体而言，PMS/Fe（Ⅵ）体系在降解6PPDQ过程中具有协同性。

关键词: 过一硫酸氢钾（PMS）, 高铁酸钾, 6PPDQ, 协同降解

Abstract:

This study systematically investigated the degradation mechanism and influencing factors of 6PPDQ by the PMS/Fe（Ⅵ）dual-oxidant system. The results demonstrated that the PMS/Fe（Ⅵ）system exhibited significant synergistic effects in the degradation of 6PPDQ，and the degradation efficiency far surpassed that of individual potassium peroxymonosulfate（PMS）or potassium ferrate（Ⅵ）［Fe（Ⅵ）］ systems. By regulating the molar ratio of PMS to Fe（Ⅵ），pH value，and reaction temperature，the degradation efficiency of 6PPDQ was significantly enhanced. Under the conditions of pH 8， 45 °C，and a 1∶1 molar ratio of PMS to Fe（Ⅵ），98% of 6PPDQ was removed within 30 min.Radical quenching experiments and electron paramagnetic resonance spectroscopy （EPR） analysis revealed that singlet oxygen（¹O₂）and high-valent iron species［Fe（Ⅳ）/Fe（V）］played dominant roles in the degradation process，while the contributions of hydroxyl radical（·OH）were relatively minor. Fe（Ⅵ）exhibited a significant activation effect on PMS. Probe experiments further confirmed that PMS not only generated radicals through self-decomposition but also promoted the formation of high-valent iron species from Fe（Ⅵ），thereby enhancing the oxidative capacity of the system. This study demonstrated the synergistic effect of the PMS/Fe（Ⅵ）system in the degradation of 6PPDQ.

Key words: potassium peroxymonosulfate（PMS）, potassium ferrate（Ⅵ）［Fe（Ⅵ）］, 6PPDQ, synergistic degradation

中图分类号:

于海斌, 吴楠楠, 齐沛沛, 顾成波, 王新全. 过一硫酸氢钾/高铁酸钾双氧化体系对6PPDQ的降解机制及影响因素[J]. 浙江农业科学, 2026, 67(10): 2525-2531.

YU Haibin, WU Nannan, QI Peipei, GU Chengbo, WANG Xinquan. Degradation mechanism and influencing factors of 6PPDQ by the potassium peroxymonosulfate/potassium ferrate（Ⅵ）dual-oxidant system[J]. Journal of Zhejiang Agricultural Sciences, 2026, 67(10): 2525-2531.

图/表 8

表1 液相色谱检测条件

Table 1 Liquid chromatography detection conditions

有机物	检测波长/nm	流动相种类及比例（体积比）	流速/（mL·min^-1）	柱温/℃	保留时间/min
6PPDQ	360	0.1%甲酸-乙腈，5∶95	1.0	30	4.312
PMSO	230	乙腈-水，20∶80	0.8	30	4.987
PMSO₂	215	乙腈-水，20∶80	0.8	30	7.193

图1 不同氧化体系对6PPDQ的降解效能

Fig.1 Degradation efficiency of different oxidation systems on 6PPDQ

图2 氧化剂投料比对6PPDQ降解效能的影响

Fig.2 The effect of oxidant feeding ratios on the degradation efficiency of 6PPDQ

图3 pH值对6PPDQ降解效能的影响

Fig.3 The effect of pH value on the degradation efficiency of 6PPDQ

图4 温度对6PPDQ降解效能的影响

Fig.4 The effect of temperature on the degradation efficiency of 6PPDQ

图5 不同猝灭剂条件下PMS/Fe（Ⅵ）体系对6PPDQ的降解效能PMSO，苯甲基亚砜；FFA，糠醇；EtOH，乙醇；TBA，叔丁醇。

Fig.5 The degradation efficiency of the PMS/Fe（Ⅵ）system on 6PPDQ under different quenching agent conditions

图6 不同体系下·OH（a）和1O2（b）的EPR谱图

Fig.6 EPR spectra of ·OH（a）and 1O?（b）under different systems

图7 PMSO探针试验结果a，HPLC检测PMSO/PMSO2的线性关系；b，Fe（Ⅵ）体系中PMSO消耗量、PMSO2生成量及其转化效率；c，PMS/Fe（Ⅵ）体系中PMSO消耗量、PMSO2生成量及其转化效率。

Fig.7 Results of the PMSO probe test

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过一硫酸氢钾/高铁酸钾双氧化体系对6PPDQ的降解机制及影响因素

Degradation mechanism and influencing factors of 6PPDQ by the potassium peroxymonosulfate/potassium ferrate（Ⅵ）dual-oxidant system

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