聚苯乙烯微塑料暴露在自然阳光下的光降解

IF 4.1 3区 化学 Q2 CHEMISTRY, PHYSICAL
Zeynep Kilinc , Gamze Yesilay , Demet Cetin , Zekiye Suludere , Suad Rashdan , Layla Hazeem , Mohamed Bououdina , George Z. Kyzas
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引用次数: 0

摘要

在本研究中,我们研究了聚苯乙烯微塑料(PS-MPs)长时间暴露在自然阳光下的光降解。采用动态光散射(DLS)、Zeta电位测量、扫描电子显微镜(SEM)和拉曼光谱分析了PS-MPs的粒径、表面电荷、形态和化学结构的变化。我们的研究结果表明,与保存在黑暗条件下的样品相比,暴露在自然阳光下显着加速了MP的降解过程,导致明显的碎裂和化学变化。虽然降解发生在黑暗中,但光会增强这一过程。因此,在进行MP毒性研究时,应将光降解参数纳入到MP的环境影响评价中。我们的研究结果强调了光降解对理解PS-MPs的环境命运和影响的重要性。进一步的研究可以集中在这些化学变化的生态影响以及降解颗粒与海洋生物群的相互作用。
本文章由计算机程序翻译,如有差异,请以英文原文为准。

Photodegradation of polystyrene microplastics exposed to natural sunlight

Photodegradation of polystyrene microplastics exposed to natural sunlight
In the present study, we investigated the photodegradation of polystyrene microplastics (PS-MPs) exposed to natural sunlight over an extended period. Changes in particle size, surface charge, morphology, and chemical structure of PS-MPs were evaluated using Dynamic Light Scattering (DLS), Zeta potential measurements, Scanning Electron Microscopy (SEM), and Raman spectroscopy. Our findings revealed that exposure to natural sunlight significantly accelerates MP degradation process, resulting in pronounced fragmentation and chemical alterations compared to samples kept in dark conditions. While degradation occurs in the dark, light enhances the process. Therefore, researchers conducting studies on the toxicity of MP should include photodegradation parameter in the environmental impact assessment of MPs. Our findings highlight the importance of photodegradation in understanding the environmental fate and impact of PS-MPs. Further research can focus on the ecological implications of these chemical changes and the interactions of degraded particles with marine biota.
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来源期刊
CiteScore
7.90
自引率
7.00%
发文量
580
审稿时长
48 days
期刊介绍: JPPA publishes the results of fundamental studies on all aspects of chemical phenomena induced by interactions between light and molecules/matter of all kinds. All systems capable of being described at the molecular or integrated multimolecular level are appropriate for the journal. This includes all molecular chemical species as well as biomolecular, supramolecular, polymer and other macromolecular systems, as well as solid state photochemistry. In addition, the journal publishes studies of semiconductor and other photoactive organic and inorganic materials, photocatalysis (organic, inorganic, supramolecular and superconductor). The scope includes condensed and gas phase photochemistry, as well as synchrotron radiation chemistry. A broad range of processes and techniques in photochemistry are covered such as light induced energy, electron and proton transfer; nonlinear photochemical behavior; mechanistic investigation of photochemical reactions and identification of the products of photochemical reactions; quantum yield determinations and measurements of rate constants for primary and secondary photochemical processes; steady-state and time-resolved emission, ultrafast spectroscopic methods, single molecule spectroscopy, time resolved X-ray diffraction, luminescence microscopy, and scattering spectroscopy applied to photochemistry. Papers in emerging and applied areas such as luminescent sensors, electroluminescence, solar energy conversion, atmospheric photochemistry, environmental remediation, and related photocatalytic chemistry are also welcome.
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