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Automated particle analysis (SEM/EDS) data from samples known to have been exposed to gunshot residue and from samples occasionally mistaken for gunshot residue - like brake dust and fireworks.

Published by National Institute of Standards and Technology | National Institute of Standards and Technology | Catalog Last Checked: August 02, 2025 at 02:35 PM | Dataset Last Updated: September 29, 2021
Automated particle analysis (SEM/EDS) data from samples known to have been exposed to gunshot residue and from samples occasionally mistaken for gunshot residue - like brake dust and fireworks. The dataset consists of analyses of 30 discrete samples: 12 from sampling automobiles ("brake dust"), 10 from sampling fireworks ("sparklers" and "spinners" and "roman candles"), 8 from shooter's left or right hands. The analysis configuration meta-data for each analysis are contained in the "configuration.txt" and "script.py" files. The raw data from each analysis is in the file pair "data.pxz" and "data.hdz". The HDZ-file details the contents of the PXZ-file. In addition, the "mag0" directory contains TIFF images with embedded X-ray spectra for each particle in the dataset. Additional HDZ/PXZ files contain the results of reprocessing the "data.hdz/.pxz" in light of the "mag0" spectra and the standard spectra in "25 keV.zip" The samples came from Amy Reynolds (amy.reynolds@pd.boston.gov) at the Boston Police Department. The "Shooter" samples were taken from a volunteer who fired a gun at a local firing range and was then sampled immediately after. They are part of a time series that was used to study GSR retention. The TIFF Image/Spectrum files can be read using NIST DTSA-II (https://www.nist.gov/services-resources/software/nist-dtsa-ii) or NeXLSpectrum.jl (https://doi.org/10.18434/M32286). The HDZ/PXZ files can be read using NIST Graf (available on request) or NeXLParticle.jl (https://github.com/usnistgov/NeXLParticle.jl).

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Complete Metadata
@type dcat:Dataset
accessLevel public
accrualPeriodicity irregular
bureauCode 
                                            [
  "006:55"
]
contactPoint 
                                            {
  "fn": "Nicholas Ritchie",
  "hasEmail": "mailto:nicholas.ritchie@nist.gov"
}
description Automated particle analysis (SEM/EDS) data from samples known to have been exposed to gunshot residue and from samples occasionally mistaken for gunshot residue - like brake dust and fireworks. The dataset consists of analyses of 30 discrete samples: 12 from sampling automobiles ("brake dust"), 10 from sampling fireworks ("sparklers" and "spinners" and "roman candles"), 8 from shooter's left or right hands. The analysis configuration meta-data for each analysis are contained in the "configuration.txt" and "script.py" files. The raw data from each analysis is in the file pair "data.pxz" and "data.hdz". The HDZ-file details the contents of the PXZ-file. In addition, the "mag0" directory contains TIFF images with embedded X-ray spectra for each particle in the dataset. Additional HDZ/PXZ files contain the results of reprocessing the "data.hdz/.pxz" in light of the "mag0" spectra and the standard spectra in "25 keV.zip" The samples came from Amy Reynolds (amy.reynolds@pd.boston.gov) at the Boston Police Department. The "Shooter" samples were taken from a volunteer who fired a gun at a local firing range and was then sampled immediately after. They are part of a time series that was used to study GSR retention. The TIFF Image/Spectrum files can be read using NIST DTSA-II (https://www.nist.gov/services-resources/software/nist-dtsa-ii) or NeXLSpectrum.jl (https://doi.org/10.18434/M32286). The HDZ/PXZ files can be read using NIST Graf (available on request) or NeXLParticle.jl (https://github.com/usnistgov/NeXLParticle.jl).
distribution 
                                            [
  {
    "title": "DOI Access for Automated particle analysis (SEM/EDS) data from samples known to have been exposed to gunshot residue and from samples occasionally mistaken for gunshot residue - like brake dust and fireworks.",
    "accessURL": "https://doi.org/10.18434/mds2-2476"
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    "downloadURL": "https://data.nist.gov/od/ds/ark:/88434/mds2-2476/Roman%20Candles%20-%20Debris%20from%20JWC.zip"
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    "mediaType": "text/plain",
    "downloadURL": "https://data.nist.gov/od/ds/ark:/88434/mds2-2476/Roman%20Candles%20-%20Post-handling%2C%20pre-ignition.zip.sha256"
  },
  {
    "mediaType": "application/zip",
    "downloadURL": "https://data.nist.gov/od/ds/ark:/88434/mds2-2476/Shooter%20%231%20-%20Zero%20time.zip"
  },
  {
    "mediaType": "text/plain",
    "downloadURL": "https://data.nist.gov/od/ds/ark:/88434/mds2-2476/Shooter%20%231%20-%20Zero%20time.zip.sha256"
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    "mediaType": "text/plain",
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    "mediaType": "text/plain",
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  },
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    "downloadURL": "https://data.nist.gov/od/ds/ark:/88434/mds2-2476/Sparklers%20during%20burn.zip.sha256"
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    "downloadURL": "https://data.nist.gov/od/ds/ark:/88434/mds2-2476/Spinners%20-%20Debris%20from%20spinner.zip.sha256"
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    "mediaType": "text/plain",
    "downloadURL": "https://data.nist.gov/od/ds/ark:/88434/mds2-2476/Spinners%20-%20Post-cleanup.zip.sha256"
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  },
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    "mediaType": "application/zip",
    "downloadURL": "https://data.nist.gov/od/ds/ark:/88434/mds2-2476/Spinners%20-%20Post-ignition.zip"
  },
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    "mediaType": "text/plain",
    "downloadURL": "https://data.nist.gov/od/ds/ark:/88434/mds2-2476/Spinners%20-%20Post-ignition.zip.sha256"
  }
]
identifier ark:/88434/mds2-2476
issued 2021-09-30
keyword 
                                            [
  "APA",
  "GSR",
  "SEM/EDS",
  "SEM/EDX",
  "automated particle analsyis",
  "energy dispersive x-ray spectrometry",
  "forensic",
  "gunshot residue",
  "scanning electron microscope"
]
landingPage https://data.nist.gov/od/id/mds2-2476
language 
                                            [
  "en"
]
license https://www.nist.gov/open/license
modified 2021-09-29 00:00:00
programCode 
                                            [
  "006:045"
]
publisher 
                                            {
  "name": "National Institute of Standards and Technology",
  "@type": "org:Organization"
}
theme 
                                            [
  "Forensics:Trace evidence",
  "Materials:Materials characterization"
]
title Automated particle analysis (SEM/EDS) data from samples known to have been exposed to gunshot residue and from samples occasionally mistaken for gunshot residue - like brake dust and fireworks.

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