Abstract：
:A study of the reaction between ninhydrin and alanine has been carried out taking into account that, adhered on the surface of a dry porous medium such as paper, a quasi-heterogeneous reaction has to take place. Instead of amino acids released from human sweat glands, aqueous solutions of alanine were taken to deliver a given amount of amino acid to the sample. The dye density, obtained after using a standard development process, could noticeably be increased by setting a drop of water on the dye dot, thus indicating that not all the alanine had been used for dye formation during the usually applied process. The incomplete reaction can be explained by the problem of bringing the reactants into contact with each other when both are in the solid phase in the porous surrounding. The temporary presence of water allows a reorientation of the insoluble reactants. With fingerprints an increase in both the rate of development and the final dye density could be obtained when the sample was post treated after the developing process with the blank solvent, thus also the background coloration could be decreased. The ideas presented in this paper may form the basis for a modification of developing processes with ninhydrin in order to increase the proportion of amino acids present (in the sample) used in dye formation without data loss.
journal_name
J Forensic Scijournal_title
Journal of forensic sciencesauthors
Ramminger U,Nickel U,Geide Bkeywords:
subject
Has Abstractpub_date
2001-03-01 00:00:00pages
288-93issue
2eissn
0022-1198issn
1556-4029journal_volume
46pub_type
杂志文章abstract：:The body of an unidentified elderly woman was found trapped in a floodgate. Prior to autopsy, full-body multislice computed tomography (MSCT) was performed for study of bone lesions and cause of death. Age was estimated by analysis of the sternal end of the fourth rib and of the pubic symphyseal medial articular surfa...
journal_title：Journal of forensic sciences
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doi：10.1111/j.1556-4029.2007.00475.x
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journal_title：Journal of forensic sciences
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更新日期：1987-07-01 00:00:00
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journal_title：Journal of forensic sciences
pub_type： 杂志文章
doi：10.1111/j.1556-4029.2011.01803.x
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journal_title：Journal of forensic sciences
pub_type： 杂志文章
doi：10.1111/j.1556-4029.2010.01653.x
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journal_title：Journal of forensic sciences
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更新日期：1996-11-01 00:00:00
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journal_title：Journal of forensic sciences
pub_type： 杂志文章
doi：10.1111/j.1556-4029.2011.02012.x
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journal_title：Journal of forensic sciences
pub_type： 杂志文章
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journal_title：Journal of forensic sciences
pub_type： 杂志文章
doi：
更新日期：1986-07-01 00:00:00
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journal_title：Journal of forensic sciences
pub_type： 杂志文章
doi：10.1111/j.1556-4029.2008.00917.x
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journal_title：Journal of forensic sciences
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doi：
更新日期：2004-11-01 00:00:00
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journal_title：Journal of forensic sciences
pub_type： 杂志文章
doi：10.1111/1556-4029.14564
更新日期：2021-01-01 00:00:00
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journal_title：Journal of forensic sciences
pub_type： 杂志文章
doi：10.1111/1556-4029.12607
更新日期：2015-01-01 00:00:00
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journal_title：Journal of forensic sciences
pub_type： 杂志文章
doi：10.1111/j.1556-4029.2011.01902.x
更新日期：2012-01-01 00:00:00
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journal_title：Journal of forensic sciences
pub_type： 杂志文章
doi：
更新日期：1978-04-01 00:00:00
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journal_title：Journal of forensic sciences
pub_type： 杂志文章
doi：
更新日期：1980-01-01 00:00:00
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journal_title：Journal of forensic sciences
pub_type： 杂志文章
doi：
更新日期：1988-01-01 00:00:00
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journal_title：Journal of forensic sciences
pub_type： 杂志文章
doi：
更新日期：1982-07-01 00:00:00
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journal_title：Journal of forensic sciences
pub_type： 杂志文章
doi：10.1111/1556-4029.12008
更新日期：2013-01-01 00:00:00
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journal_title：Journal of forensic sciences
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doi：
更新日期：2005-11-01 00:00:00
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journal_title：Journal of forensic sciences
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doi：
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journal_title：Journal of forensic sciences
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doi：
更新日期：2004-05-01 00:00:00
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journal_title：Journal of forensic sciences
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doi：
更新日期：1995-05-01 00:00:00
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journal_title：Journal of forensic sciences
pub_type：
doi：10.1111/1556-4029.13573
更新日期：2018-03-01 00:00:00
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journal_title：Journal of forensic sciences
pub_type： 杂志文章
doi：10.1111/1556-4029.14120
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journal_title：Journal of forensic sciences
pub_type： 杂志文章
doi：10.1111/j.1556-4029.2009.01005.x
更新日期：2009-05-01 00:00:00
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journal_title：Journal of forensic sciences
pub_type： 杂志文章
doi：
更新日期：1999-09-01 00:00:00
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journal_title：Journal of forensic sciences
pub_type： 杂志文章
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