UV-Irradiation Facilitating Pb Release from Recycled PVC Microplastics.

Bulletin of Environmental Contamination and Toxicology
Junxiang RenYujun Wang

Abstract

Microplastics (MPs) are ubiquitously in ecosystem and have evoked wide attention. The potential risk of MPs to the ecosystems is associated with MPs and the additives such as Pb, which serves as a traditional stabilizer. However, the release of Pb from MPs remains largely unknown. In this study, we evaluated the release of Pb from recycled polyvinyl chloride (PVC) under UV-irradiation. The release process was dominated by two processes: H+ facilitated dissolution of Pb, and light-induced hydroxyl radical (·OH) caused C-H bond cleavage from PVC with the generation of alkyl radical. The effects of pH and coexisting low molecular weight organic acids (LMWOAs) were also evaluated. Lower pH speeds up the Pb release from MPs. The LMWOAs act as a filter of UV to restrain the Pb release. Overall, this study shows the release of Pb from recycled PVC MPs and indicates the potential risk of Pb to the environment.

References

Jan 30, 2004·Annual Review of Medicine·Herbert Needleman
Oct 27, 2010·The Journal of Physical Chemistry. a·Przemysław DrzewiczJonathan W Martin
Jul 29, 2015·Environmental Science. Processes & Impacts·Berit GewertMatthew MacLeod
Dec 22, 2017·Environmental Science & Technology·Olubukola S AlimiNathalie Tufenkji
Aug 1, 2018·Environmental Science & Technology·Zhihao ChenShujuan Zhang
Jul 31, 2019·Environmental Pollution·Yulan ZhangMika Sillanpää
Oct 28, 2019·Ecotoxicology and Environmental Safety·Yuling ChenJun Wang
May 13, 2020·Environmental Science & Technology·Tianqi Zhang, Ching-Hua Huang
Oct 14, 2020·Journal of Hazardous Materials·Andrew Turner, Montserrat Filella

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