ScienceGeek - 18-3-2008 at 11:49
The Kastle-Meyer test is a test used in forensics to detect blood, whereupon blood is swabbed, the Phenolphthalein solution is added, followed by the
addition of Hydrogen Peroxide. The heme- group in blood catalyses the decomposition of H.P.
The clue of this test is that the Phenolphthalein used is not of the "normal" kind, but has been pre- dissolved in alkaline solution, and reduced to a
colorless species using zinc powder.
Look here for more information.
My question:
Has anyone got any experience in doing this? I tried it once, but my results were not any good. Is there any other way of reducing Phenolphthalein to
its colorless species?
Could not find any information elsewhere...
Thanks
WizardX - 18-3-2008 at 15:44
http://www.ncsu.edu/kenanfellows/2002/pligon/forensics/labs/...
*Luminol: 1.0 g luminal + .5 g Na2CO3 dissolved in 100 ml of distilled water, then add 0.7 g sodium perborate or 0.9 g potassium iodate.
** Kastle- Meyer reagent - This is a reduced phenolphthalein solution. KOH, phenolphthalaein and Zinc. After dissolved add ethanol to 500 ml store in
a brown bottle in the refrigerator.
http://www.blogit.dodgy-at-best.com/forensicallyyours/2005/1...
http://www.nzic.org.nz/ChemProcesses/biotech/12A.pdf
http://www.chymist.com/BLOODSTAIN%20PATTERNS.pdf
http://www.mckinneylabs.com/Forensic/notes/Forensic%20Serolo...
http://www.scenesafe.co.uk/pdfs/K160-%20MSDS.pdf
http://www.tfachicago.net/physicalscience/index.php?act=down...
ScienceGeek - 18-3-2008 at 16:42
Wow!
Thank you extremely much, WizardX! 