Methods of Analysis

  • Created by: Briony
  • Created on: 23-04-13 09:51
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  • Methods of Analysis
    • Some rely on machinery and some rely on chemical analysis
    • Paper chromatography is used on coloured substances for example the coloured pigments in plants or the colour in food additives.
    • This works because not all substances can bond with paper, so don't travel as far up the page. However, some substances dissolve well in liquidsso travel further up the paper.
    • If they are a similar colour and travel a similar distance up the page, they are likely to be the same substance
    • Instrumental methods of analysis: These rely on machines. Soem are better for detecting or identifying elements, whereas others are better for compounds.
    • Machinery is: Fast, Accurate (They reliably identify elements and compounds,
    • Sensitive- they can detect small amounts of substances in a small sample


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