Quantification of the redox properties of microplastics and their effect on arsenite oxidation.

ABSTRACT: Microplastics have attracted global concern. The environmental-weathering processes control their fate, transport, transformation, and toxicity to wildlife and human health, but their impacts on biogeochemical redox processes remain largely unknown. Herein, multiple spectroscopic and electrochemical approaches in concert with wet-chemistry analyses were employed to characterize the redox properties of weathered microplastics. The spectroscopic results indicated that weathering of phenol-formaldehyde resins (PFs) by hydrogen peroxide (H₂O₂) led to a slight decrease in the content of phenol functional groups, accompanied by an increase in semiquinone radicals, quinone, and carboxylic groups. Electrochemical and wet-chemistry quantifications, coupled with microbial-chemi

SUBMITTER: Chen L 

PROVIDER: S-EPMC11197510 | biostudies-literature | 2023 Sep

REPOSITORIES: biostudies-literature