Ways of Analysing Substances
The different ways of analysing substances included in C2.3, including Paper Chromatograpgy, Instrumental methods and Gas Chromatography.
- Created by: Helen
- Created on: 19-05-13 11:16
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- Chemistry- Analysing Data
- Paper Chromotography
- Some compounds dissolve in a mixture easier than others, solvents in particular.
- The solubility determines how far they travel across the paper
- Paper Chromotography
- E numbers are a code to identify the four additives
- Paper Chromotography
- Some compounds dissolve in a mixture easier than others, solvents in particular.
- The solubility determines how far they travel across the paper
- Paper Chromotography
- A forward additive is added to make it last longer.
- 'Chromo' means colour.
- Instrumental Methods- Mahchines analysing things
- Chemistry- Analysing Data
- Chemistry- Analysing Data
- Advantages
- Instrumental Methods- Mahchines analysing things
- Instrumental Methods- Mahchines analysing things
- Highly Accurate and Sensitive
- Advantages
- Advantages
- Quicker
- It enables very small substances to ba analysed
- Uses
- Fighting Pollution
- Uses
- Uses
- Health Care
- Analysing Products
- Disadvantages
- Expensive
- Disadvantages
- Disadvantages
- Takes special training to use
- The resaults have to be compared with known sources
- Gas Chromotograogy linked to Mass Spectronomy
- They pass vapours through a column and detect them as they leave the collumn at different times.
- Gas Chromotograogy linked to Mass Spectronomy
- Gas Chromotograogy linked to Mass Spectronomy
- Retention time is the time it takes a component in a mixture to pass through the column
- Different subastances have different retention times due to how string or weak the attractions are towards the material
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