how is the fingermark impression useful in the detection of drug use?
The secretions, skin oils and dead cells in a human fingerprint contain residues of various chemicals and their metabolites present in the body. These can be detected and used for forensic purposes.
Fingerprint
The secretions, skin oils and dead cells in a human fingerprint contain residues of various chemicals and their metabolites present in the body. These can be detected and used for forensic purposes. For example, the fingerprints of tobacco smokers contain traces of cotinine, a nicotine metabolite; they also contain traces of nicotine itself. Caution should be used, as its presence may be caused by mere contact of the finger with a tobacco product. By treating the fingerprint with gold nanoparticles with attached cotinine antibodies, and then subsequently with a fluorescent agent attached to cotinine antibodies, the fingerprint of a smoker becomes fluorescent; non-smokers' fingerprints stay dark. The same approach, as of 2010, is being tested for use in identifying heavy coffee drinkers, cannabis smokers, and users of various other drugs.
who published a study of tool marks on bullets UNANSWERABLE how is the firearm examined during a criminal investigation? It is examined for serial numbers and potentially fingerprints. and how are the cartridges examined to give evidence in an investigation? By Fingerprint recovery how is the striated databasing carried out? Information uploaded to these databases can be used to track gun crimes and to link crimes together. Maintainers of these databases recommend that every recovered firearm be test fired and the resulting known exemplar be uploaded into the database what is the name of that portal where such details are uploaded? National Integrated Ballistic Identification Network (NIBIN) & National Ballistics Intelligence Service (NABIS). who owns and manages the first portal? The ATF who owns and manages the second portal mentioned? The British Intelligence Service with reference to the solution given for the examination of a cartrige, what are some of its classification systems? The Roscher System, the Juan Vucetich System and the Henry Classification System. what is the third system all about? It is a long-standing method by which fingerprints are sorted by physiological characteristics for one-to-many searching. who all were involved to invent this system? Sir, William James Herschel, Dr. Henry Faulds & Sir. Francis Galton who is the second person? He was a Scottish Doctor
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Fingerprint [SEP] Detection of drug use
The secretions, skin oils and dead cells in a human fingerprint contain residues of various chemicals and their metabolites present in the body. These can be detected and used for forensic purposes. For example, the fingerprints of tobacco smokers contain traces of cotinine, a nicotine metabolite; they also contain traces of nicotine itself. Caution should be used, as its presence may be caused by mere contact of the finger with a tobacco product. By treating the fingerprint with gold nanoparticles with attached cotinine antibodies, and then subsequently with a fluorescent agent attached to cotinine antibodies, the fingerprint of a smoker becomes fluorescent; non-smokers' fingerprints stay dark.