Thursday, January 7, 2010
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key terms
- Bacteria – are microscopic organisms whose single cells have neither a membrane-bounded nucleus nor other membrane-bounded organelles like mitochondria and chloroplasts. Another group of microbes, the archaea, meet these criteria but are so different from the bacteria in other ways that they must have had a long, independent evolutionary history since close to the dawn of life
- BPA – Suspected of being hazardous to humans since the 1930s, concerns about the use of bisphenol A in consumer products were regularly reported in the news media in 2008 after several governments issued reports questioning its safety, and some retailers have removed products made of it from their shelves
- DEHA – A chemical in plastics that is potentially harmful to humans
- High Density Polyethylene – (recycle label #2) HDPE goes into milk and water jugs, bleach bottles, detergent bottles, shampoo bottles, plastic bags and grocery snacks, motor oil bottles, household cleaners, and butter tubs.
- Low Density Polyethylene - (recycle label #4) LDPE goes into plastic bags and grocery sacks, dry cleaning bags, flexible film packaging, and some bottles.
- Other (Includes Polycarbonate and mixed materials) (recycle label #7) Includes resins not mentioned above or combinations of plastics
- Polyethylene Terephthalate – (recycle label #1) PETE goes into soft drink, juice, water, detergent, and cleaner bottles. Also used for cooking and peanut butter jars
- Polypropylene – (recycle label #5) PP goes into caps, disks, syrup bottles, yogurt tubs, straws and film packaging.
- Polystyrene – (recycle label #6) PS goes into meat trays, egg cartons, plates, and cutlery; carry out containers, and clear trays.
- Polyvinyl Chloride - (recycle label #3) PVC goes into window cleaner, cooking oils and detergent bottles. Also used for peanut butter jars and water jugs.
Plastic Pollution Links
- 7 Healthcast: Water Bottle Bacteria
- Are plastic bottles Dangerous
- Are water bottles safe to be reused
- Bacteria risks of water bottles
- Bisphenol A
- BPA, Chemical Used To Make Plastics, Found To Leach From Polycarbonate Drinking Bottles into Humans
- FAQs: The Safety of Plastic Beverage Bottles
- Greener Paths for Plastics
- Heat causes chemical to leach from plastic
- Heightened concern over BPA
- High-density polyethylene
- Plastic beverage bottles
- Plastic bottles and safety
- Plastic bottles are they safe
- Plastic bottles potentially release harmful chemicals
- Plastic Water Bottle Safety
- Polyethylene terephthalate
- Reusing Plastic Bottles Can Pose Serious Health Hazards
- Study Finds Some Bottled Water Has More Bacteria and Less Fluoride than Tap Water
- Study of chemical in plastic bottles
2 comments:
my chemical engineering blog:
www.vinithbejugamchemicalengineering.blogspot.com
1/12/2010
-essential question – how do you know what plastic bottles are safest drink from?
-developed 9 foundation questions
GOALS
-notes
-retool essential question:
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