By Sissi Ge Sabrina Wong

1. Chemical Pollution By Sissi Ge Sabrina Wong

2. Outline • introduction • Sources of chemical pollution • The effect of chemical pollution 1 • The effect of chemical pollution 2 • Statistics • What can we do to prevent chemical pollution • Chemical pollution in Los Angeles

3. Introduction • We use tens of thousands of chemicals every day • chemicals are important to having a good life • Important to national economy • BUT chemicals can be bad for humans and environment

4. Sources of chemicalpollution • Domestic sewage • Industrial discharges • Seepage from waste sites • Atmospheric fallout • Domestic run-off • Accidents and spills at sea • Operational discharges from oil rigs • Mining discharges • Agricultural run-off

5. The effect of chemical pollution 1 • neurological toxins harm a child’s nervous system • Developmental toxins affect the development a fetus • Fetus structural or functional abnormalities • Retardation • death

6. 2 The effect of chemicalpollution--lead • Enter system through food, water and air • associated with obvious and serious clinical problems • millions of American children have elevated blood lead levels • millions children’s blood lead levels greater than 0.72 mmol/L.

7. Statistic • mercury-contaminated fish damaging the brain development of children • Prenatal affect brain development • more lead in children’s blood than the currently accepted level • affect behavior and learning • Breakdown products of chlorpyrifos recently banned • 90 percent of children tested recently in a Minnesota study.

8. What can we do to prevent chemical pollution? • Try and buy organic produce, this has not been treated with chemicals

9. What can we do to prevent chemical pollution? • Try and reduce the amount of chemicals used in the home, such as fly sprays, detergents and weed killers

10. What can we do to prevent chemical pollution? • Try and avoid plastic packaging, when incinerated it releases harmful chemicals

11. Chemical pollution in Los Angeles • The top polluter-Exxonmobil Oil Corp. Torrance Refy • Major pollutants-Ammonia • 4 percent of houses in Los Angeles County have a high risk of lead hazards • 11 Superfund sites in Los Angeles County caused contamination of drinking water sources

12. Sources • http://www.mcsuk.org/marine_world/marine_world.php?title=Chemical%20Pollution • http://www.wsws.org/articles/2000/oct2000/poll-o06.shtml • http://www.doctoryourself.com/pollution.html • http://www.scorecard.org/community/index.tcl?zip_code=91748&set_community_zipcode_cookie_p=t&x=66&y=9

13. Any Questions

14. Thank you!