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High-sensitive determination of tetracycline antibiotics adsorbed on microplastics in mariculture water using pre-COF/monolith composite-based in-tube solid phase microextraction on-line coupled to HPLC-MS/MS

Journal of Hazardous Materials 2024 30 citations ? Citation count from OpenAlex, updated daily. May differ slightly from the publisher's own count. Score: 55 ? 0–100 AI score estimating relevance to the microplastics field. Papers below 30 are filtered from public browse.

Jinling Pang, Hongzhe Chen, Jinling Pang, Hongzhe Chen, Hongzhe Chen, Huige Guo, Hongzhe Chen, Huige Guo, Hongzhe Chen, Beichen Lin, Hongzhe Chen, Huige Guo, Hongzhe Chen, Huige Guo, Huige Guo, Huige Guo, Kunning Lin, Yuanbiao Zhang Hongzhe Chen, Shuyuan Huang, Yuanbiao Zhang Beichen Lin, Yuanbiao Zhang Hongzhe Chen, Huige Guo, Jinling Pang, Yuanbiao Zhang Jinling Pang, Yuanbiao Zhang Yuanbiao Zhang Kunning Lin, Yuanbiao Zhang Hongzhe Chen, Shuyuan Huang, Yuanbiao Zhang

Summary

Researchers developed a highly sensitive method to detect antibiotic residues adsorbed onto microplastics in mariculture water, capable of measuring amounts as small as fractions of a picogram. Using this technique, they found that microplastics of different sizes carry varying amounts of tetracycline antibiotics, and that algal biofilms on the particles may influence antibiotic levels. The method opens new possibilities for understanding how microplastics transport chemical contaminants in aquatic environments.

Microplastics (MPs) act as carriers for organic pollutants (e.g. antibiotics) and microorganisms (e.g. bacteria) in waters, leading to the proliferation of antibiotic resistance genes. Moreover, the antibiotics adsorbed on MPs may exacerbate this process. For further research, it is necessary to understand the types and amounts of antibiotics adsorbed on MPs. However, due to the heavy work of MPs collection and sample pretreatment, there is a lack of analytical methods and relevant data. In this study, an in-tube solid phase microextraction (IT-SPME) on-line coupled to HPLC-MS/MS method based on amorphous precursor polymer of three-dimensional covalent organic frameworks/monolith-based composite adsorbent was developed, which could efficiently capture, enrich and analyze tetracycline (TCs) antibiotics. Under the optimal extraction parameters, the developed method was capable of detecting TCs at levels as low as 0.48-1.76 pg. This method was applied to analyze the TCs adsorbed on MPs of different particle sizes in mariculture water for the first time, requiring a minimum amount of MPs of only 1 mg. Furthermore, it was observed that there could be an antagonistic relationship between algal biofilm and TCs loaded on MPs. This approach could open up new possibilities for analyzing pollutants on MPs and support deeper research on MPs.

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