I don't know. There could be microplastics in the environme…

I don't know. There could be microplastics in the environment that could potentially be absorbed by plants, including apples, but i couldn't find evidence that this instance is of concern. Here is more on this topic:
Microplastics have become a pervasive environmental pollutant, and while a lot of focus has been on marine environments, their presence in soil and air has raised concerns about how they might enter the food chain: