Identifying Drugs of Abuse Using Gas Chromatography

At 22:58 September 23, 2015, Rob Slone was arrested on Sanctuary Road in West Bridgford for supply purposes. A large amount of cash was found in the suspect and a bag containing an unknown tablet or powder was discovered in the bank near the place of arrest. The grayish powder is seized from Mr. Slone's possession, and its off-white powder and the rest of the paper are in a self-sealed bag. On the riverbank, five pounds of paper money, wrapping paper, and two white powder were seized in a sealed bag.

Gas chromatography - mass spectrometry (GC - MS) is a combined method of gas - liquid chromatography and mass spectrometry to identify different substances in a test sample. GC-MS applications include drug tests, fire surveys, environmental analysis, explosive surveys, and identification of unknown samples. In addition, we can identify trace elements in materials that were previously thought to have been resolved rather than being identified. GC - MS consists of two main components: gas chromatograph and mass spectrometer. Gas chromatograph uses a capillary column that depends on column size (length, diameter, film thickness) and phase properties (eg, 5% phenyl polysiloxane). When the sample moves through the length of the column, the difference in chemistry between the different molecules in the mixture separates the molecules.

Gas chromatography (GC) is sometimes called gas-liquid chromatography (GLC), a separation technique in which the mobile phase is a gas. Gas chromatographic separation is always done in columns that are always "filled" or "capillary". The packed column is a conventional working horse for gas chromatography, cheaper and easier to use and generally provides adequate performance. Capillary columns usually have higher resolution and are more expensive but are widely used, especially for complex mixtures. Both types of columns are made of nonadsorptive and chemically inert materials. Stainless steel and glass are commonly used for packed columns and quartz or quartz glass for capillary columns.