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

第一作者： Luo, Yanli

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

作者机构：

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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