Concise, Rapid, and Comprehensive Approach for Microplastic Detection Based on Ambient Microwave Plasma Torch Desorption/Ionization Mass Spectrometry.

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Tác giả: Weiwei Chen, Fengjian Chu, Hongru Feng, Qing Li, Jing Luo, Yuanjiang Pan

Ngôn ngữ: eng

Ký hiệu phân loại:

Thông tin xuất bản: United States : Analytical chemistry , 2025

Mô tả vật lý:

Bộ sưu tập: NCBI

ID: 489594

 Microplastics (MPs) have been universally recognized as a pervasive and enduring environmental hazard, promoting research on relevant analytical techniques. Despite the unique advantages of mass spectrometry (MS) for polymer identification, lengthy procedures and complex data processing are always ineluctable. In this study, an ambient microwave plasma torch (MPT) ion source coupled with an LTQ Orbitrap MS was developed, presenting a rapid and concise analytical approach for MPs with simplified pretreatment and intuitive mass spectra. One testing process took approximately 30 s, enabling a higher efficiency of analysis. Furthermore, the method was not constrained by the MP size limitation
  even macroscale polymer blocks could be detected. Under the optimized conditions, the method was proven to be efficient for the desorption and ionization of a wide range of MPs (polyamide, poly(ethylene terephthalate), polymethacrylate, polylactic acid, poly(3-hydroxybutyrate), polypropylene, and polythene), while the distinctly decipherable spectra intuitively reflected the mass intervals conforming to the corresponding monomer of MPs. Linear relationships were established between sample mass and the intensity of characteristic ion, with
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