Practice identifying ions in samples or using chromatographic techniques with these contextualised problems.

The topics covered in each paper are:

North East:

  • Determination of lithium by flame emission
  • Determination of lead ions by dithizone
  • Chromatography of food additives


  • Determination of the dye concentration in a sports drink using UV-vis spectrophotometry
  • Thin layer chromatography of food colourings
  • Chromatographic analysis of petroleum hydrocarbons in soil