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A novel, low-cost, and efficient separation strategy based on S-doped C3N4 for the analysis of PCDD/Fs and dioxin-like PCBs

文献类型： 外文期刊

作者： Luo, Yanli 1 ; Liu, Chengbin 2 ; Wang, Xianli 2 ; Zhang, Qicai 2 ; Yao, Chunxia 2 ; Huang, Di 2 ; Liu, Xing 2 ; Lu, Yangyang 2 ; Song, Wei 2 ; Chen, Shanshan 2 ; Zhou, Jiaxin 2 ; Rao, Qinxiong 2 ; Song, Weiguo 2 ;

作者机构： 1.Shanghai Ocean Univ, Coll Food Sci, Shanghai 201306, Peoples R China

2.Shanghai Acad Agr Sci, Inst Agrifood Stand & Testing Technol, Shanghai 201403, Peoples R China

3.Minist Agr & Rural Affairs, Coconstruct Minist & Prov, Key Lab Food Qual Safety & Nutr, Shanghai 201403, Peoples R China

4.Shanghai Coelite Agrifood Testing Tech Serv Co Ltd, Shanghai 201403, Peoples R China

关键词： PCDD/Fs; Dl-PCBs; Carbon nitride; Separation; Analysis

期刊名称：JOURNAL OF ENVIRONMENTAL CHEMICAL ENGINEERING （ 影响因子：7.7； 五年影响因子：7.3 ）

ISSN： 2213-2929

年卷期： 2024 年 12 卷 3 期

页码：

收录情况： SCI

摘要： Polychlorinated dibenzo-p-dioxins and dibenzofurans (PCDD/Fs) and dioxin-like polychlorinated biphenyls (dlPCBs) are widespread and highly toxic persistent organic pollutants with similar chemical structure. The popular process for the separation of PCDD/Fs and dl-PCBs in one sample often relies on imported and expensive activated carbon, giving rise to an urgent need of inexpensive and efficient separation method. Herein, a novel, simple, and low-cost separation strategy based on sulfur-doped carbon nitride (S-C 3 N 4 ) is reported. The S-C 3 N 4 material was synthesized through simple thermal annealing with precursor of thiocyanuric acid. After recovery experiments, the optimal addition ratio of S-C 3 N 4 was determined to be 40% mixed with silica gel. The recoveries for PCDD/Fs and dl-PCBs congeners are 32% - 105% and 60% - 70% respectively, which not only meets USEPA and Chinese standards but also shows comparable performance to activated carbon. Moreover, the proposed SC 3 N 4 strategy exhibits excellent performance for the analysis of PCDD/Fs and dl-PCBs in real complex samples (sediment and fish liver) in terms of detected concentrations and toxic equivalents. Overall, this study puts forward a new and low-cost avenue for the separation of PCDD/Fs and dl-PCBs, which is of remarkable meaning for motivating the development of detection techniques and domestic equipment for dioxins and other pollutants in the environment.

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