Talk:Perchlorate

March 2005

Interesting and disturbing update - see article in the New Jersey Star Ledger - March 10, 2005.

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--Kjdmsi 19:50, Mar 10, 2005 (UTC)kjdmsi

I feel as if the "health effects" section is written as if it is a refutation of people with concerns over the health effects of perchlorate, rather than an explanation of the health effects. Neutrality concern? For now, I would like to see more citations.

Nleamy 15:06, 14 August 2006 (UTC)

This article needs to be updated, because there are a lot of concerns, MA, & CA have their regulations spelled out, and EPA may come up something soon - see the reference below. http://www.kvue.com/news/top/stories/042607kvuedefenders-bkm.103abb48.html

mars

So what if perchlorate is found on Mars? What's the big deal? Kingturtle (talk) 14:16, 5 August 2008 (UTC)

It's used in rocket fuel... it means people will only have to bring fuel for the journey there, not back. it also means that it will be a lot easier to colonize mars, apparantly. -Savannah —Preceding unsigned comment added by 78.32.69.137 (talk) 14:33, 5 August 2008 (UTC)

Should this be included in the discussion in the article? Hendo1769 (talk) 20:27, 5 August 2008 (UTC)

Definitely. The article needs to tell us why it is important. Kingturtle (talk) 05:02, 6 August 2008 (UTC)

Newspapers are making a deal of it being "toxic", meaninng that it poses a risk to potential human visits there. --MoRsE (talk) 06:02, 6 August 2008 (UTC)

I also read on www.bbcnews.com today that perchlorates somehow are indicators of past or present life. Does anyone know how? And if so can that be incorporated into the article?

Thanks!

66.227.84.101 (talk) 02:38, 8 August 2008 (UTC)

PEPCON

I rm "several disasters"; no source for that. I don't doubt there have been others and when I see a cite, I'll entertain a mention. Also general cleanup of the PEPCON mention.

perchlorate reduction potential

according to my edition of cotton and wilkinson (5th ed, Wiley see page 564) reduction of perchlorate to chloride occurs with the LOWEST potential of all the oxyanions.

Without a reference, I deem the statement "Perchlorate does in fact have the highest redox potential..." to be dubious.

In theory, perchlorate SHOULD exhibit the highest reduction potential. It apparently does not which also coincides with its kinetic stability. —Preceding unsigned comment added by 38.118.77.19 (talk) 13:44, 30 September 2010 (UTC) I am just going to add the appropriate information, in table format and cite the textbook. This is a popular, but untrue, misconception (that perchlorate is a stronger oxidant than chlorate, chlorite, or hypochlorite). —Preceding unsigned comment added by Budzicho (talk • contribs) 13:51, 30 September 2010 (UTC)

Extending Page Proposals

Hi,

My classmates (kimaox & Abecks1717) and I are planning to extend this perchlorate page for our class project. Thank you for your future interests on our edits and the page!

Our proposals for extension of the page includes: 1) extending on health effects of perchlorate, 2) addressing clean up issues, and 3) addressing contamination issues. In specific, our sources addresses many issues and information for our proposal topics.

- Sources -

1) Health effects

Pulmonary fibrosis effect of ammonium perchlorate exposure in rabbit -- This article describes adverse health effects that were present in rabbits after treatment with ammonium perchlorate.

Evaluation of perturbations in serum thyroid hormones during human pregnancy due to dietary iodide and perchlorate exposure using a biologically based dose-response model -- This article talks about the levels of perchlorate intake that is necessary to effect thyroid function in pregnant mothers (late term).

Health survey of plant workers for an occupational exposure to ammonium perchlorate -- The effects of ammonium perchlorate exposure in a large sample of farmers.

Breathing Perchlorate -- Very good outline of perchlorate with a lot of other sources listed within the article.

2) Clean up issues

ENVIRONMENTAL CLEANUP: Transfer of Contaminated Federal Property and Recovery of Cleanup Costs -- This report is about liability and financial responsibility related to perchlorate cleanup, where perchlorate cleanup liability is currently the subject of process of taking legal action between the private properties such as Kerr-McGee Corporation and the United States. However, responsibility issues are still under debate and consideration (case is in pretrial stage). It also talks about laws that affect contaminated federal property transfer to private parties.

Technical Fact Sheet- Perchlorate -- This article talks about which technologies are currently being utilized to treat perchlorate, including in situ and ex situ treatment.

U.S. Department of Defense and White House working together to avoid cleanup and liability for perchlorate pollution. -- This article talks about how U.S. government is trying not to take responsibility in perchlorate cleanup due to extremely high costs. It also talks about how cleanup is a serious and immediate issue to take care of due to water contamination.

Transposon and Deletion Mutagenesis of Genes Involved in Perchlorate Reduction in Azospira suillum PS -- This article is about genes in bacteria (Azoxpira suillum PS) that are involved in perchlorate metabolism, which can be possible tools in perchlorate cleanup. However, not much is known about biochemistry and genetics process of perchlorate metabolism.

PERCHLORATE Q & A -- This article mentions that there is a possiblity that Department of Defense and NASA pressured the National Academy of Sciences to create weaker recommendations on allowable perchlorate levels. Thus, deep research is going on to address this issue. Also, this article implies that clean up issues, such as decisions on which side to take responsibility, should be addressed quickly.

3) Contamination

Perchlorate as an environmental contaminant -- This article is about the environmental occurrence, toxicity, analytical chemistry, and remediative approaches are discussed.

Dissimilatory perchlorate reduction: a review. -- This article also talks about the contamination levels of perchlorate of the surface and ground water and the affected regions.

Perchlorate trophic transfer increases tissue concentrations above ambient water exposure alone in a predatory fish. -- This article examined effects of varying concentrations of the environmental contaminant perchlorate in northern pike based on exposure in water and/or from prey.

Development of freshwater water-quality criteria for perchlorate -- This article also talks about the perchlorate contamination levels in water in the United States and its impact on ecological health risk. Kohw 22:42, 21 February 2014 (UTC)

Bibliography for Plan Proposal - Educational Project

1) Lumen A, Mattie DR, Fisher JW. Evaluation of perturbations in serum thyroid hormones during human pregnancy due to dietary iodide and perchlorate exposure using a biologically based dose-response model.Toxicol Sci. 2013 Jun;133(2):320-41. doi: 10.1093/toxsci/kft078. Epub 2013 Mar 27. PubMed PMID: 23535361.

2) Furin CG, von Hippel FA, Hagedorn B, O'Hara TM. Perchlorate trophic transfer increases tissue concentrations above ambient water exposure alone in a predatory fish. J Toxicol Environ Health A. 2013;76(18):1072-84. doi: 10.1080/15287394.2013.836693. PubMed PMID: 24188192; PubMed Central PMCID: PMC3839789.

3) Chen HX, Shao YP, Wu FH, Li YP, Peng KL. [Health survey of plant workers for an occupational exposure to ammonium perchlorate]. Zhonghua Lao Dong Wei Sheng Zhi Ye Bing Za Zhi. 2013 Jan;31(1):45-7. Chinese. PubMed PMID: 23433158.

4) Wu F, Chen H, Zhou X, Zhang R, Ding M, Liu Q, Peng KL. Pulmonary fibrosis effect of ammonium perchlorate exposure in rabbit. Arch Environ Occup Health. 2013;68(3):161-5. doi: 10.1080/19338244.2012.676105. PubMed PMID: 23566323.

5) Bardiya N, Bae JH. Dissimilatory perchlorate reduction: a review. Microbiol Res. 2011 May 20;166(4):237-54. doi: 10.1016/j.micres.2010.11.005. Epub 2011 Jan 15. Review. PubMed PMID: 21242067.

6) Sass J. U.S. Department of Defense and White House working together to avoid cleanup and liability for perchlorate pollution. Int J Occup Environ Health. 2004 Jul-Sep;10(3):330-4. PubMed PMID: 15473090.

7) Dean KE, Palachek RM, Noel JM, Warbritton R, Aufderheide J, Wireman J. Development of freshwater water-quality criteria for perchlorate. Environ Toxicol Chem. 2004 Jun;23(6):1441-51. Review. PubMed PMID: 15376530.

8) Urbansky ET. Perchlorate as an environmental contaminant. Environ Sci Pollut Res Int. 2002;9(3):187-92. Review. PubMed PMID: 12094532.

9) Mittal, Anu K. "Environmental Cleanup: Transfer of Contaminated Federal Property and Recovery of Cleanup Costs." U.S. Government Accountability Office. U.S. GAO, 16 Sept. 2005. Web. 17 Feb. 2014. <http://www.gao.gov/products/GAO-05-1011R>.

10) "Technical Fact Sheet – Perchlorate." United States Environmental Protection Agency. US EPA, May 2012. Web. 17 Feb. 2014. <http://www.epa.gov/fedfac/pdf/technical_fact_sheet_perchlorate.pdf>.

11) Melnyk, Ryan A., Iain C. Clark, Annette Liao, and John D. Coates. "Transposon and Deletion Mutagenesis of Genes Involved in Perchlorate Reduction in Azospira Suillum PS." American Society for Microbiology. American Society for Microbiology, 31 Dec. 2013. Web. 17 Feb. 2014. <http://mbio.asm.org/content/5/1/e00769-13.full>.

12) "Perchlorate Q & A." Organic Consumers Association. Organic Consumers Association, n.d. Web. 17 Feb. 2014. <http://www.organicconsumers.org/perchlorate.cfm>.