Wednesday, 14 March 2012

14 March - Chemistry

Analytical Demonstrations

Today the students were given an opportunity to look at two of the analytical techniques that chemists can use to analyse materials in a series of five workshops: 

1.    Chromatography (Column chromatography; High Performance Liquid Chromatography and Gas chromatography).
2.     Atomic Absorption Spectroscopy (AAS) and absorption spectroscopy using UV-Visible light.

Column Chromatography

Naomi explaining the finer points of Gas Chromatography

Students 'smelling the roses'!

UV- Visible Spectroscopy using olive oil
Different substances absorb different wavelengths of light and chemicals have their own distinctive absorption fingerprints that can be used to identify when and how much of the material is present. UV-Vis spectroscopy studies the absorption fingerprints of materials in the visible-near ultraviolet range.
Column Chromatography
Column Chromatography - works best in the dark
Column Chromatography and it requires muscle power!
Atomic Absorption Spectroscopy - as demonstrated by Leah from Wirreanda
Leah with the students from Wirreanda

AAS is used to accurately determine the concentration of a metallic element in solution. 

Teachers and Tutors tour Flinders Analytical
This facility provides a unique combination of analytical instrumentation for the analysis of a wide range of compounds, from small molecules to large proteins, with a focus on mass spectrometry. The diverse range of equipment and know-how includes method development, instrumental analysis and data interpretation. The Laboratory provides services to both commercial and academic clients.
Dr Daniel Jardine showed the teachers and tutors all of the machines and explained their functions.

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