chemistry - chromatography

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chemistry - chromatography
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نص القصة المصورة

  • A hair sample is taken from the suspect.
  • The sample is put in a beaker with a solvent. Any explosives in the hair sample dissolve in the solvent.
  • The solution is heated.
  • Paper with samples dots are put into a solvent.
  • The solvent is absorbed by the paper and when it reaches the dots the chemicals race up the paper at different speeds.
  • A chromatogram is created which can be used to show if there are explosives in the sample.
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