PFAS Quiz
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Questions and Answers

Which organization expanded the definition of PFASs in 2021?

  • The Organisation for Economic Co-operation and Development (OECD) (correct)
  • The International Union for Conservation of Nature (IUCN)
  • The World Health Organization (WHO)
  • The United States Environmental Protection Agency (EPA)

    • How many distinct PFASs that contain at least three perfluorinated carbon atoms are known according to the OECD?

  • 1,000
  • 14,735
  • 4,730 (correct)
  • 100,000

    • What is the early definition of PFASs from 2011 based on?

  • The presence of at least one fully fluorinated methyl or methylene carbon atom
  • The absence of any H/Cl/Br/I atom attached to a fluorinated substance
  • The presence of at least one perfluoroalkyl moiety (correct)
  • The presence of at least three perfluorinated carbon atoms

    • How many unique PFAS chemical compounds are listed in the United States Environmental Protection Agency's (EPA) toxicity database, DSSTox?

    <p>14,735</p> Signup and view all the answers

    What is the common feature of PFASs?

    <p>Multiple fluorine atoms attached to an alkyl chain</p> Signup and view all the answers

    Study Notes

    PFAS Definitions and Organizations

    • The Organization for Economic Co-operation and Development (OECD) expanded the definition of PFASs in 2021.

    Distinct PFAS Compounds

    • The OECD recognizes over 4,700 distinct PFASs containing at least three perfluorinated carbon atoms.

    Early Definition of PFASs

    • The early 2011 definition of PFASs was based on the presence of the perfluoroalkyl functional group, highlighting their unique chemical structure.

    PFAS in EPA Toxicity Database

    • The United States Environmental Protection Agency's (EPA) toxicity database, DSSTox, lists approximately 2,500 unique PFAS chemical compounds.

    Common Features of PFASs

    • A common characteristic of PFASs is their resistance to both water and oil, contributing to their persistence in the environment.

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    Description

    Test your knowledge on PFAS: Per- and polyfluoroalkyl substances. Take this quiz to learn about the characteristics, terminology, and regulations surrounding these synthetic organofluorine chemical compounds.

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