Harmful Chemicals neurotoxin young children and fetuses are
- Slides: 17
Harmful Chemicals
* neurotoxin * young children and fetuses are the most vulnerable
Sources of Lead Exposure ceramic glaze ammunition picture tube pipes & solder
Reducing Lead Exposure
* neurotoxin * young children and fetuses are the most vulnerable
Sources of mercury in the environment elemental (Hg) and inorganic (Hg 2+) NATURAL weathering
ANTHROPOGENIC waste incineration
How mercury enters humans * inhalation (elemental & inorganic) * Eating fish contaminated with methyl mercury (CH 3 Hg) Once inorganic mercury falls into the water, bacteria convert it to an organic form, methyl mercury. This is easily biomagnified because of its solubility in fats (lipids). ** Acid deposition can accelerate conversion to methyl mercury **
Reducing Mercury Exposure
* Toxic & persistent * Can cause respiratory problems * Organochlorines may act as endocrine disrupters
Uses of Chlorine TCE chlorinated solvents disinfectant in water treatment production of PVC
Reducing use of Chlorine use O 3 or H 2 O 2 to “bleach” pulp/paper alternatives to chlorine based cleaners use O 3 to disinfect drinking water use plant based plastics instead of PVC plastic
* Chlorinated hydrocarbon compounds * Some are carcinogenic * Endocrine, reproductive, and immune disruptors
Where do dioxins come from? * Unwanted by-products of industrial processes that use chlorine production of PVC * Incineration of municipal & medical waste
Most human exposure comes from. . . FOOD most notably contaminated fatty meats & dairy products
POPs Treaty persistent organic pollutants * 2001 international treaty * “Dirty Dozen” pollutants including DDT, PCBs, and dioxins * GOALS 1> ban/phase out use of dirty dozen 2> detoxify/stockpile dirty dozen * The United States still has not ratified the treaty
The Dirty Dozen ▪ Banned/highly restricted chemicals ▪ Pesticides Insecticides Industrial Waste Stockholm Convention on Persistent Organic Pollutants 1. 2. 3. 4. 5. 6. 7. 8. 9. 10. 11. 12. Aldrin Chlordan DDT Dieldrin Endrin Heptachlor Hexachlorobenzene Mirex Toxaphene PCBs Polychlorinated Dioxins Polychlorinated Furans
- Antigentest åre
- Sucralose neurotoxin
- Specialty chemicals vs commodity chemicals
- Differences of useful and harmful materials
- Unit 10 caring for children and young people
- Working with young children chapter 1
- Tscyc screening form
- Prephonemic stage
- Sfyc hampshire
- Alcohol consumption causes blood vessels to contract.
- Physical property of ammonia
- Unit 3 house and home
- You must put all chemicals and drugs in locked cupboards
- Workkeys applied mathematics level 5 answers
- Kao europe
- Kinetics flotation reagents
- Aquabrite super shock
- Tasman chemicals