D.9 - Drug Detection And Analysis Flashcards
How can organic structure be analysed and identified?
Through the use of infrared spectroscopy, mass spectroscopy, and proton NMR.
How can the presence of alcohol in a sample of breath be detected?
Through the use of either a redox reaction or a fuel cell type of breathalyser.
How can alcohol be detected with the use of a breathalyser?
Through a redox reaction that produces a colour change (orange to green). Breath is blown through a tube containing crystals of potassium dichromate (VI). The ethanol is oxidised to form ethanol acid. The dichromate ion is reduced to form the Cr3+ ion.
What is the relationship between organic structure and solubility?
The boiling point increases from soluble in non-polar solvents to soluble in polar solvents; the boiling point increases from the weakest IMF to the strongest IMF (London dispersion forces, dipole-dipole, to hydrogen bonding).
What is fractional distillation used for?
To separate two or more components with different boiling points.
What is gas chromatography?
A techniques used to separe and analysed volatile compounds in the gaseous state.
How is gas chromatography and mass spectroscopy (GC-MS) used to detect steroids?
By detecting the presence of steroids in urine samples of athletes.
