News tagged with chromium

The Spin Doctor

An electron spin can be compared to the needle of a compass that points either north or south. Some electrons in a full shell point up, canceling out the electromagnetic fields of an equal number of electrons ...

Jan 13, 2011
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Percolating a solution to hexavalent chromium

The metal chromium is an essential nutrient for plant and animal metabolism, but it can accumulate to toxic and hazardous levels in the environment when discharged in industrial waste water; a point made infamous by the movie ...

Oct 12, 2010
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Supernova shrapnel found in meteorite

(PhysOrg.com) -- Scientists have identified the microscopic shrapnel of a nearby star that exploded just before or during the birth of the solar system 4.5 billion years ago.

Sep 09, 2010
4.9 / 5 (17) 11 | with audio podcast

You have your MoM's ions

Hip replacement patients with metal-on-metal (MoM) implants (both the socket and hip ball are metal) pass metal ions to their infants during pregnancy, according to a new study presented today at the 2010 Annual Meeting of ...

Mar 09, 2010
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Groundwater Cleanup at Superfund Site

(PhysOrg.com) -- A chain of chemical reactions between organic waste and naturally occurring chromium appears to explain the long-standing elevated levels of the chemical chromium-6, a human carcinogen, in groundwater at ...

Feb 08, 2010
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