Rapid and semi-quantitative presumptive tests for opiate drugs

A. Choodum, N. N. Daeid

Research output: Contribution to journalArticle

43 Citations (Scopus)

Abstract

Digital image analysis was applied to the products of simple colour presumptive tests for opiates. Adobe Photoshop software was used for colour analysis to obtain analytical data in the form of a Red Green Blue (RGB) value. Calibration curves were developed for morphine, codeine, and diamorphine hydrochloride and the developed tests successfully applied to seized heroin samples to demonstrate the application of the technique in a forensic case context. Good agreement with gas chromatographic quantification results was obtained for the illicit samples analysed and a wide linear range and low detection limit for all drugs under test facilitated the application to illicit samples. The results show great potential for use as a semi-quantitative field test for illicit drug compounds.

Original languageEnglish
Pages (from-to)284-292
Number of pages9
JournalTalanta
Volume86
DOIs
Publication statusPublished - 30 Oct 2011

Keywords

  • opiates
  • nitric acid test
  • samples
  • camera
  • marquis test
  • RGB colour system
  • digital images
  • rapid
  • semi-quantitative
  • presumptive tests
  • opiate drugs

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