articleEnvironmental Science & TechnologyMar 4, 2019Closed access

New Insights into the Aging Behavior of Microplastics Accelerated by Advanced Oxidation Processes

State Key Laboratory of Pollution Control and Resource Reuse · Nanjing University

PubMed
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Abstract

In the environment, microplastics are subjected to multiple aging processes; however, information regarding the impact of aging on the environmental behavior of microplastics is still lacking. This study investigated the alteration properties of polystyrene and high-density polyethylene microplastics by heat-activated K2S2O8 and Fenton treatments to improve the understanding of their long-term natural aging in aquatic environments. Our results indicated that the O/C ratio was an alternative parameter to the carbonyl index (CI) to quantitatively describe the surface alteration properties of microplastics. The correlation model of the O/C ratio or CI versus alteration time was developed and compared by natural…

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