Naproxen as a Turn-On Chemiluminescent Probe for Real-Time Quantification of Sulfate Radicals

作者：Shao, Huixin; Chen, Jie; Xu, Jihong; Liu, Ying; Dong, Hongyu; Qiao, Junlian; Guan, Xiaohong^*

来源：Environmental Science and Technology, 2023, 57(23): 8818-8827.

DOI：10.1021/acs.est.3c01948

• sulfate radical quantification
• chemiluminescence
• naproxen
• advanced oxidationprocess
• wastewatertreatment

Currenttechniques for identifying and quantifying sulfate radicals(SO4 (center dot) (-)) in SO4 (center dot) (-)-based advanced oxidation processes(SR-AOPs) are unsatisfactory due to their low selectivity, poor reliability,and limited feasibility for real-time quantification. In this study,naproxen (NAP) was employed as a turn-on luminescent probe for real-timequantification of SO4 (center dot) (-) in SR-AOPs. The chemiluminescence-(CL) yield (phi(CL)) of the reaction of NAP with SO4 (center dot) (-) was first determined to be 1.49 x 10(-5) E mol(-1) with the bisulfite activation by cerium-(IV)[Ce-(IV)/BS] process. Then, the maximum peak concentrations of SO4 (center dot) (-) in the Ce-(IV)/BS-NAPprocess was quantified to be similar to 10(-11) M basedon the derived equation. Since phi(CL) of the reactionof NAP with SO4 (center dot) (-) wasmuch greater than that with other reactive oxidizing species (ROS),the developed CL method worked well in selective quantification ofSO(4) (center dot) (-) in various SR-AOPs(e.g., the activation of peroxymonosulfate and persulfate by ironprocesses). Finally, the electron transfer from NAP to SO4 (center dot) (-) was proposed to be the criticalstep for CL production. This work provides a novel CL method for real-timequantification of SO4 (center dot) (-), which facilitates the development of SR-AOPs and their applicationin water and wastewater treatment. @@@ Real-timequantification of SO4 (center dot-) is necessaryfor promoting the development and application of SR-AOPs.This study reports a novel chemiluminescence method for real-timequantification of SO4 (center dot-) in SR-AOPs.

• 单位
  同济大学