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Exploration of a novel triazine-based covalent organic framework for solid-phase extraction of antibiotics

机译：抗生素固相提取新型三嗪基共价有机骨架的探讨

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摘要

Covalent organic frameworks (COFs) are a new class of porous materials with a large surface area and potential superiority in sample pretreatment. Herein a novel triazine-based COF named SCAU-1 was fabricated via a hydrothermal method, and SNW-1 was also prepared as a contrastive COF material. After characterization, SCAU-1 was used as solid-phase extraction (SPE) adsorbent to concentrate five sulfanilamides (SAs) and four tetracyclines (TCs). Several parameters were investigated in the extraction process, including the amount of adsorbent, the flow rate, the washing and elution solvent, the loading capacity and breakthrough volume. After detected by UPLC-MS/MS, the results revealed that SCAU-1 showed high extraction efficiency towards the selected antibiotics. According to the comparison with SNW-1, SCAU-1 showed better performance for the adsorption of TCs. While for SAs, the recoveries of SCAU-1 is close to that of SNW-1. The LODs are from 0.031 to 0.55 mu g L-1, and the recoveries are from 88.0% to 93.4% for SCAU-1 with the RSDs ranging from 2.5% to 4.8%. The results demonstrated that SCAU-1 is a kind of promising adsorbent for the enrichment of organic pollutants.
机译：共价有机框架（COF）是一种具有大表面积的新型多孔材料，以及样品预处理的潜在优越性。本文通过水热法制造了一种名为SCAU-1的三嗪基COF，并且还制备了SNW-1作为对比性COF材料。在表征后，使用SCAU-1作为固相萃取（SPE）吸附剂，以浓缩五个磺胺胺（SAS）和四个四环素（TCS）。在提取过程中研究了几种参数，包括吸附剂的量，流速，洗涤和洗脱溶剂，负载能力和突破体积。通过UPLC-MS / MS检测到后，结果表明，SCAU-1对所选抗生素的提取效率高。根据与SNW-1的比较，SCAU-1表现出更好的TCS吸附性能。虽然对于SAS，SCAU-1的回收率接近SNW-1的回收率。腰层为0.031至0.55μgl-1，回收率为SCAU-1的88.0％至93.4％，RSD为2.5％至4.8％。结果表明，SCAU-1是一种有助于富集有机污染物的吸附剂。

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  • 来源
    《RSC Advances》 |2020年第20期|共8页
  • 作者

    Wang Guanhua; Zhou Tong; Lei Yongqian;

  • 作者单位

    South China Agr Univ Coll Vet Med Guangzhou 510642 Guangdong Peoples R China;

    South China Agr Univ Coll Vet Med Guangzhou 510642 Guangdong Peoples R China;

    Guangdong Inst Anal Guangdong Prov Key Lab Emergency Test Dangerous C Guangdong Engn Technol Res Ctr Online Monitoring Guangzhou 510070 Peoples R China;

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  • 正文语种 eng
  • 中图分类 化学;
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