I’d like to see the data in support of the statement that we ingest the equivalent of a credit card each week.....perhaps in a lifetime or half a lifetime.
You could do something like
Companies add ozone to water before bottling. I think water low in minerals absorbs plastic from containers. Water with ozone absorbs more plastic than water low in minerals.
Some people have ozonators. You could store rain water in a glass container. Weigh the water.
Add ozone to the water and move it to a plastic container. Let it react. Weigh the water.