DDT

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Presentation I made about the chemical DDT.

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DDT

  1. 1. DDT Matthew Spicuzza
  2. 2. Outline • • • • • • • • What is DDT? Structure of DDT Rachel Carson Dangers of DDT MOA How DDT “helped” Conclusions Questions
  3. 3. What is DDT? • In 1948 Paul Mueller was awarded the Nobel Prize in Medicine • DDT is a pesticide • Persistent Organic Pollutant
  4. 4. Structure of DDT • Dichlorodiphenyltrichloroethane
  5. 5. Rachel Carson • Rachel Carson’s Silent Spring
  6. 6. DDT • DDD – 1,1-dichloro-2,2-bis[p-chlorophenyl] ethane • DDE – Dichlorodiphenyldichlolorethylene – a degradation of DDT – also dangerous to environment 7
  7. 7. Dangers of DDT • Bioaccumulation • POP • Birds are major target species
  8. 8. MOA in Birds • Inhibits Ca-dependent ATPases • Egg shell thinning • Increased risk of damage to eggs
  9. 9. Birds affected by DDT • Osprey • Brown Pelican • Raptor
  10. 10. How DDT “helped” • Boomerang Paradigm • Increased awareness of ecotoxicity
  11. 11. Conclusions • In conclusion, DDT is an insecticide that was used heavily from the late 1930’s to the early 1970’s • Throughout this time there were several populations of birds that declined rapidly • DDT has been one of the most widely influential pesticides to help gain the attention of the impact we have on the environment.
  12. 12. References • Casarett, Louis J., John Doull, and Curtis D. Klaassen. "Chapter 29/Ecotoxicology." Casarett and Doull's Toxicology: The Basic Science of Poisons. New York: McGraw-Hill, 2008. 1176-177. Print. • Michael, C. Newman. Fundamentals of Ecotoxicology, Third EditionMichael C. Newman. Fundamentals of Ecotoxicology, Third Edi: CRC, 2009. Print. • "DDT - A Brief History and Status | Pesticides | US EPA." EPA. Environmental Protection Agency, n.d. Web. 18 Nov. 2013. <http://www.epa.gov/pesticides/factsheets/chemicals/ddt-briefhistory-status.htm>. • Dr. Baer’s power points from clinical toxicology • Google images
  13. 13. Questions?

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