Identifying Drugs of Abuse Using Gas Chromatography :: Forensic Science

ScenarioOn the 23rd of September 2015 at 2258, Mr. Rob Slone was arrested on Sanctuary Road, West Bridgford on possession with intent to supply. A queen-size amount of cash was found on the suspect and a dish containing unknown diggingss and powders was recovered from the riverbank, in close proximity to the location of the arrest. A balance with off- dust coat powder, an off- white powder in self certain(p) basis and a tablet in writing wraps were seized from Mr. Slones property. At the riverside, a 5 note, a tablet in paper wraps and 2 off- white powders in self soused bags, were seized.Physical trialAimThe testify is physically examined to determine the integrity of the seized substances before whatsoever destructive techniques be used.IntroductionIn forensic science physical examination of the evince is essential as if the packaging is not correct evidence derriere be lost or accessed. A chain of custody is bigPhotography is essential, each photographs should be tak en before the evidence is moved.Methods introduce MF/2Before any destructive techniques were used on the exhibit, the integrity of the packaging was determined. The tamper evident bag containing the exhibit was examined to incumbrance if was correctly labelled and sealed. Upon receipt of the exhibit the tenacity label was gestural to ensure the integrity of the exhibit. The tamper evident bag was cut and opened. The xanthous paper wrap containing the white tablet measured 1.8x 4cm. The yellow paper wrap was opened to remove the tablet. The exhibit MF/2 was photographed with scale. optical examination indicates that the exhibit is a white tablet with a manufacturers logo CO/COD. The imprint suggested that the tablet could be co-codamol. Co-codamolThe tablet was weighed in a plastic weighing boat to prevent any contamination. The tablet weighed 0.6001 grams.All the information was noted on a universal Examination Record.Exhibit DR/3Upon receipt of exhibit DR/3 the continuity labe l was signed. The tamper evident bag was cut and opened. In the bag there was an off white powder in a sealed bag. The bag containing off white powder was weighed. It weighed 0.80823 grams.Results and discussionPhysical examination is essential for the integrity of exhibits. The exhibits must be physically examined before any techniques that would destroy are used. The exhibitsThe aim of the experiment as a forensic analyst is to examine the seized items visually before the probable tests. ExhibitsBag telephone numberSamantha NaasDR/3D10025448MF/2D10025224Catherine TuckeyDR/2D10025606MF/3D10025590 lee side BerryDR/1D10025639MF/4D10025438Presumptive testsAimThe presumptive tests are carried out to get a preliminary identification of the controlled exemplar and are used for qualitative analysis of the unknown substance.