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  • P-ISSN 2233-4203
  • E-ISSN 2093-8950

Study on Photodegradable Water-Soluble Compounds of Expanded Polystyrene

Mass Spectrometry Letters / Mass Spectrometry Letters, (P)2233-4203; (E)2093-8950
2021, v.12 no.3, pp.118-124
Lee Seulgidaun (Kyungpook National University)
Kim Sunghwan (Kyungpook National University)
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Many previous studies have focused on revealing the harmfulness of microplastic particles, whereas very few studies have focused on the effects of chemicals, particularly photooxidation product. In this study, products of photodegradation from expanded polystyrene (EPS), compounds produced by photolysis by ultraviolet (UV) light, were investigated. EPS was directly irradiated and photolyzed using a UV lamp, and then the extracted sample was analyzed using high-resolution mass spectrome-try (HRMS). Multiple ionization techniques, including electrospray ionization, atmospheric pressure chemical ionization, and atmospheric pressure photoionization, were used. In total, >300 compounds were observed, among which polystyrene monomer, dimer, and oxidized products were observed. In this work, the data presented clearly demonstrate that it is necessary to identify and monitor oxidized plastic compounds and assess their effect on the environment.

plastics, photodegradation, expanded polystyrene, water-soluble

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Mass Spectrometry Letters