Talk:Chromium

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Article changed over to new Wikipedia:WikiProject Elements format by Dwmyers 14:39 Feb 26, 2003 (UTC) and Mkweise. Elementbox converted 14:39, 2 July 2005 by Femto (previous revision was that of 17:16, 30 June 2005).

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[edit] Information Sources

Some of the text in this entry was rewritten from Los Alamos National Laboratory - Chromium. Additional text was taken directly from USGS Chromium Statistics and Information, USGS Periodic Table - Chromium, from the Elements database 20001107 (via dict.org), Webster's Revised Unabridged Dictionary (1913) (via dict.org) and WordNet (r) 1.7 (via dict.org). Data for the table was obtained from the sources listed on the subject page and Wikipedia:WikiProject Elements but was reformatted and converted into SI units.


[edit] Dietary Sources of Chromium

There needs to be a discussion about the dietary uses of chromium and food sources.

Indeed. Some mention might also be made of Erin Brockovich.
Here's a fairly good digest of mineral nutrition. I've reproduced the Cr section below:
It is difficult to estimate the chromium requirement, but a range of 50 micrograms to 200 micrograms per day is tentatively recommended.
Trivalent chromium is required for maintaining normal glucose metabolism. Evidence shows that chromium improves glucose tolerance [Riales, R., & Albrink, M. J., American J. Clin. Nutr., Vol. 34, pg 2670] . Diabetes and coronary heart disease are associated with low chromium concentrations in human tissue.
The chemical forms of chromium in foods are not known with certainty, but the bioavailability of chromium compounds has been found to be high in brewer's yeast, shell fish, whole wheat bread and mushrooms.
An increased incidence of bronchial cancer has been associated with exposure to dusts containing chromate. But the carcinogenicity of certain chromates bears no relevance to the nutritional role of non toxic trivalent chromium.
Other sources I've found list:
  • organ meats
  • brown rice
  • wheat
  • eggs
  • orange juice
  • potatoes
  • Cheese
  • Corn oil


I imagine one could also scrape the sides of stainless steel cookware more often.--Joel 06:06, 7 Jun 2005 (UTC)

Dakota~N~Kat Forever Happy Valentines Day to all!!!

[edit] Talk

What does "lucious" in Notable characteristics mean?--Warut 11:50, 10 November 2006 (UTC)

Lustrous, I presume, referring to its luster - or else it's just lusty stuff :-) Vsmith 12:28, 10 November 2006 (UTC)

What does Chromium look like when it reacts to a different element?--DK 12:52, 14 February 2008 (UTC)

I believe there is a problem with the electronic configuration, it is shown as 3d5, 4s1: i believe it is 3d4 4s2

[edit] glass ware

Is anybody still using this stuff or was it only substituted here in Europe by sulfuric acid hydrogen peroxide mixtures?--Stone 10:54, 4 April 2006 (UTC)

Yes, in the U.S. they are still currently using Chromium for all sorts of jobs.--DK 1:02, 14 Febuary 2008 (UTC) —Preceding unsigned comment added by 164.58.63.14 (talk)

[edit] Question about units of measurement?

I'm not sure what a "µg" is. If I'm not sure, I'm guessing some others aren't either. Maybe someone could clear this up here and in the article if it needs it? 11:51, 5 April 2007 (UTC)

You're from the US, right? Don't worry, they'll catch up sooner or later. :) It's micrograms, micro (µ) is a common prefix in the International System of Units. I've added a link in the article. Femto 14:41, 5 April 2007 (UTC)


[edit] Biology: Chromium, Bioavailability and Cancer

Certainly, there are no studies on cancer and uptake of hexavalent chromium thru skin or GI tract. But hexavalent chromium is carcinogenic, and is penetrating easily the skin. It is not correct to conclude only from the fact that no clinical / environmental studies on cancer other than lung are available that it would not have an carcinogenic effect. To make it clear, the dosage is important for the generating of cancer. However from the nutritial point of view one would not expect to exceed this dosage.

National Institute for Occupational Safety and Health, USA NIOSH Safety and Health Topic: Chromium (Chromium IV, Chromic (VI) Acid, Chromates (VI)) http://www.cdc.gov/niosh/topics/chromium/


Baranowska-Dutkiewicz B.(1981) Absorption of hexavalent chromium by skin in man. Arch Toxicol. Mar;47(1):47-50. http://www.ncbi.nlm.nih.gov/entrez/query.fcgi?db=pubmed&cmd=Retrieve&dopt=AbstractPlus&list_uids=7283739&query_hl=7&itool=pubmed_docsum


Kerger BD, Paustenbach DJ, Corbett GE, Finley BL, (1996) Absorption and elimination of trivalent and hexavalent chromium in humans following ingestion of a bolus dose in drinking water. Toxicol Appl Pharmacol. Nov;141(1):145-58. http://www.ncbi.nlm.nih.gov/entrez/query.fcgi?itool=abstractplus&db=pubmed&cmd=Retrieve&dopt=abstractplus&list_uids=8917687


Dutkiewicz T, Baranowska-Dutkiewicz B, Konczalik J. (2000) Percutaneous absorption studies after forty years. Int J Occup Environ Health. Apr-Jun;6(2):111-3. http://www.ncbi.nlm.nih.gov/entrez/query.fcgi?db=pubmed&cmd=Retrieve&dopt=AbstractPlus&list_uids=10828139&query_hl=7&itool=pubmed_docsum Robi123 21:32, 6 May 2007 (UTC)


According to UC Berkeley Professor Nancy Amy, Chromium is carcinogenic. Source: 16:30 in class "19: Trace Minerals" in online course "NS 10: Introduction to Human Nutrition", available on iTunes via [[1]].Robi123 19:44, 11 May 2007 (UTC)

[edit] Chromium Nicotinate

What is "Chromium Nicotinate"? It is on the ingrediant list for Spava Coffee's "Metabolism Coffee". Is it a a mix of Chromium and Nicotine? Chromuim and Nickel? Is there any research on it? Thanks Antmusic 15:10, 7 August 2007 (UTC)

[edit] chemical

What are some chemical properties of chromium?Potterfa11 (talk) 22:05, 14 January 2008 (UTC)


[edit] Reflectance

Chromium is often used because it's 'shiny' so some hard values on the material's reflectance would be nice. would help in computer graphics as well Dan Frederiksen (talk) 05:34, 14 April 2008 (UTC)

[edit] garcinia cambogia

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