Skip to Main Content

Adult Upgrading - English Fall 2024 Richard Volk

The Saga of Black Plastic - Background

 

In 1987, the US EPA defined something called a  Reference Dose (abbreviated RfD) as the maximum acceptable oral dose of a toxic substance, below which no adverse non-cancerous health effects should result from a lifetime of exposure.

Along came PFAS (Perfluoroalkyl and Polyfluoroalkyl Substances) were first developed in the 1950s. Today PFAS are found in a wide variety of everyday products. For example, PFAS keep food from sticking to packaging or cookware, make clothes and carpets resistant to stains, and are used in integrated electronic components, creating more effective fire retardants and firefighting foam.

PFAS molecules have a chain of linked carbon and fluorine atoms. Because the carbon-fluorine bond is one of the strongest, these chemicals do not quickly degrade (breakdown) in the environment.

They are commonly referred to as "forever chemicals". 

Black Plastic - Primary Sources

Scientists Have Been Investigating the Toxicity of Black Plastic - Primary (Peer Reviewed)

Black products constitute about 15% of the domestic plastic waste stream, of which the majority is single-use packaging and trays for food. This material is not, however, readily recycled owing to the low sensitivity of black pigments to near infrared radiation used in conventional plastic sorting facilities. Accordingly, mounting evidence shows that the demand for black plastics in consumer products is partly met by sourcing material from the plastic housings of end-of-life waste electronic and electrical equipment (WEEE).

Turner, Andrew. “Black Plastics: Linear and Circular Economies, Hazardous Additives and Marine Pollution.” Environment International, vol. 117, Aug. 2018, pp. 308–18. EBSCOhost, https://doi.org/10.1016/j.envint.2018.04.036.

The Event that Thust Black Plastic Into the Limelight - Primary / Secondary (Peer Reviewed Sort Of)

This Article Received a Big Bump on the Web and in the Media - Tertiary

Confirmation Bias

Precautionary Principle

This site is maintained by the librarians of Okanagan College Library.
If you wish to comment on an individual page, please contact that page's author.
If you have a question or comment about Okanagan College Library's LibGuides site as a whole, please contact the site administrator.