- Tincture of iodine
Tincture of iodine is a disinfectant, usually 8% elemental
iodine inethanol .Overview
Tincture of iodine is often found in emergency survival kits, used both to disinfect wounds and to sanitize surface water for drinkingcite web|url=http://wonder.cdc.gov/wonder/sci_data/misc/type_txt/travel.asp|title=http://wonder.cdc.gov/wonder/sci_data/misc/type_txt/travel.asp|accessdate=2008-05-06 CDC] .
When an alcohol solution is not desirable,
Lugol's iodine , an aqueous solution of iodine inpotassium iodide solution, orpovidone iodine (Betadine ), a PVPI solution, can be used.Iodine is toxic. Children and pregnant women, who are more sensitive to it, should avoid its use. Human metabolism requires trace amount of iodine, which is satisfied by
iodized salt .When using iodine to sanitize surface water, it should be left to sit for 30 minutes before drinking, allowing time for all viruses and bacteria to be killed. If the water temperature is less than 20 °C (68 °F), sitting time should be extended to several hours. To purify 1 L (34 oz) of water, 0.3 mL (0.01 oz) of 2% tincture should be used. Cold or cloudy water should be given 2.4 mL (0.08 oz) of 2% iodine, and should be left to sit for several hours.
Following disinfection, the iodine odor and taste can be removed by adding powdered
vitamin C , which converts theiodine toiodide . A similar reaction also removes chlorine from chlorinated water.Fact|date=May 2008Iodine used to sanitize water is also available in tablet or crystal form. One form or another should be available at health stores, and trip outfitters.
References
External links
* [http://www.hc-sc.gc.ca/ewh-semt/water-eau/drink-potab/water_outdoors-eau_plein_air_e.html Health Canada Information on Water Filtration]
* [http://www.vrp.com/art/1781.asp?c=1180093641109&h=52&k=/det/9936.asp&m=/&p=no&s=0 Iodine: The Universal Nutrient Article]
* [http://altmedangel.com/iodine.htm How to Self-Test for an Iodine Deficiency]
* [http://iodine4health.com/ortho/ortho.htm Orthoiodosupplementation]
* [http://iodine4health.com/body/body.htm Iodine and the Body]
* [http://iodine4health.com/special/special.htm Iodine - Special Topics]
* [http://www.harvestfields.ca/Fred/006.htm Chemical Incompatables]
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