By: Chad Beneker
History: Selenium   comes from the Greek  word, selene, meaning moon. It was discovered by Jons Berzelius in  Sweden in ...
Properties:
Properties: Color:     Red in either powder of crystalline form     Gray crystalline metal-like form (metallic      sel...
Isotopes: Selenium  isotopes are mainly used for the  production of medical and industrial  radioisotopes. Se-77, Se-78 ...
Availability in foods: Brazilian   nuts Fish Meat   and eggs Brewer’s yeast Wheat germ Sunflower seeds Shellfish w...
Availability in nature: Selenium  is commonly found in  sedimentary rock. Not often found in pure substances. Most comm...
Uses: By   itself:      Used as a catalyst      Used in solar cells and photocells In   brasses and stainless steels: ...
Fun facts: Itis not recommended to consume more  than 30 mcg per day, too much Selenium  causes Selenosis which can cause...
bibliography   http://www.lenntech.com/periodic/elements/se.htm   http://chemistry.about.com/od/elementfacts/a/selenium....
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Selenium (Chad Beneker)

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Transcript of "Selenium (Chad Beneker)"

  1. 1. By: Chad Beneker
  2. 2. History: Selenium comes from the Greek word, selene, meaning moon. It was discovered by Jons Berzelius in Sweden in the year 1817.
  3. 3. Properties:
  4. 4. Properties: Color:  Red in either powder of crystalline form  Gray crystalline metal-like form (metallic selenium) Selenium is used to remove color from glass It is also used to give a red color to glasses and enamels
  5. 5. Isotopes: Selenium isotopes are mainly used for the production of medical and industrial radioisotopes. Se-77, Se-78 used to make Br-77 Se-80 used to make Br-80m Se-74 used to make Se-75 which is used as a source in gamma radiography.
  6. 6. Availability in foods: Brazilian nuts Fish Meat and eggs Brewer’s yeast Wheat germ Sunflower seeds Shellfish walnuts
  7. 7. Availability in nature: Selenium is commonly found in sedimentary rock. Not often found in pure substances. Most commonly found with sulfide minerals or with silver, copper, lead, and nickel minerals. Cost:  Pure: $61.00 per 100g  Bulk: $5.30 per 100 g
  8. 8. Uses: By itself:  Used as a catalyst  Used in solar cells and photocells In brasses and stainless steels:  It improves the machinability of these compounds.
  9. 9. Fun facts: Itis not recommended to consume more than 30 mcg per day, too much Selenium causes Selenosis which can cause loss of hair, skin, and nails. High levels of selenium in males is associated with male infertility.
  10. 10. bibliography http://www.lenntech.com/periodic/elements/se.htm http://chemistry.about.com/od/elementfacts/a/selenium.htm http://www.tracesciences.com/se.htm http://www.news-medical.net/news/2004/07/02/3048.aspx http://www.galleries.com/Selenium http://www.eco-usa.net/toxics/chemicals/selenium.shtml http://www.drweil.com/drw/u/ART02870/selenium.html http://www.umm.edu/altmed/articles/selenium-000325.htm http://www.chemicool.com/elements/selenium.html http://periodictable.com/Elements/034/index.html http://www.ecvv.com/Product/1843392.html http://www.list.co.uk/article/17297-a-guide-to-cooking-shellfish/ http://www.whiskiesofscotland.com/production-materials http://sparkingtech.com/tag/solar-cell/ http://blogs.saschina.org/chemicalparadigms/tag/radioisotopes/ http://www.britannica.com/EBchecked/topic/62958/Jons-Jacob-Berzelius

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