The effect of bleaching agents on the DNA analysis of bloodstains on different floor coverings.
Bleaching agents
Bloodstains
Cleaning products
DNA analysis
Forensic medicine
Journal
International journal of legal medicine
ISSN: 1437-1596
Titre abrégé: Int J Legal Med
Pays: Germany
ID NLM: 9101456
Informations de publication
Date de publication:
May 2020
May 2020
Historique:
received:
13
09
2019
accepted:
14
01
2020
pubmed:
22
1
2020
medline:
2
2
2021
entrez:
22
1
2020
Statut:
ppublish
Résumé
Blood at crime scenes is one of the most significant traces of evidence in investigation proceedings. Cleaning up these traces with household cleaning products, often containing bleaching agents, inhibits or complicates the detection of DNA. In this study, human blood was applied onto different floor coverings (carpet, laminate, parquet, PVC, tile) and subsequently cleaned with water and bleaching agents (hydrogen peroxide, sodium hypochlorite, DanKlorix®, Vanish Oxi Action®) at different times. Samples have been collected afterwards from the floors. The samples underwent a quantitative and qualitative DNA analysis. Cleaning smooth surfaces with water is usually sufficed to prohibit retrieving a DNA profile in most of the cases. Cleaning carpets was more difficult due to their absorbent surface whereas the use of bleaching agents caused an additional reduction of verifiable DNA concentrations. Retrieving partial or complete profiles after the use of bleaching agents was only possible when cleaning with low concentrations of 3% hydrogen peroxide.
Identifiants
pubmed: 31960151
doi: 10.1007/s00414-020-02250-y
pii: 10.1007/s00414-020-02250-y
doi:
Substances chimiques
Bleaching Agents
0
DNA
9007-49-2
Types de publication
Journal Article
Langues
eng
Sous-ensembles de citation
IM
Pagination
921-927Références
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