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• 1 2023-10-20T18:57:30-07:00 Gunpowder Residue 14 plain 2023-10-20T23:35:59-07:00 History 
  Ned Doheny Jr. 
  Doheny Library
  On the night of February 16, 1929, Ned and his close friend and personal secretary, T. Hugh Plunkett, were found shot to death in one of the guest bedrooms of Greystone, Ned's Beverly Hills mansion. After his death, his parents donated $1.1 million to USC to build the Edward L. Doheny, Jr. Memorial Library.
  
  Chemistry
  
  Gunshot Residue Analysis
  Gunshot Residue (GSR): GSR arises from the cooling and condensation of the materials produced by the combustion reactions within the firearm and can be deposited on the firer, bystanders, and surrounding surfaces in the event of a discharge.
  Chemical analysis - combustion reaction from primer that results in lead, barium, antimony byproducts
  
  
  
  
  
  
  
  
  
  
  
  
  
  Resources
  
  Books available at USC Libraries
  
  Their Arrows Will Darken the Sun: The Evolution and Science of Ballistics (1st ed.)
  https://uosc.primo.exlibrisgroup.com/permalink/01USC_INST/hs9vaa/alma991043435547203731
  
  Peer-Reviewed Scholarly Articles 
  
  Nothing but hot air?—On the molecular ballistic analysis of backspatter generated by and the hazard potential of blank guns. 
  https://uosc.primo.exlibrisgroup.com/permalink/01USC_INST/273cgt/cdi_pubmedcentral_primary_oai_pubmedcentral_nih_gov_8354942
  
  Unusual blood spatter patterns on the firearm and hand: A backspatter analysis to reconstruct the position and orientation of a firearm. 
  
  References
  
  Pitts, K.M. & Lewis, S.W. (2019). Encyclopedia of Analytical Science (3rd Ed).