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For further information contact University of York - Centre for Analytical Science and Instrumentation at http://www.yec.york.ac.uk/yec
The first part of the program includes an introduction to capillary electrophoresis (a technique developed for the analysis of water soluble compounds) and its comparison with high performance liquid chromatography. Using mainly animation, the apparatus used and theory behind capillary electrophoresis are considered using the separation of the glycine peptides di to hexa as the example.
Other areas looked at are the electroosmotic effect, electrokinetic capillary chromatography, system optimisation and sample introduction methods. Detection methods are also considered. These include ultra violet absorbtion, fluorescence, indirect fluorescence (the quenching of fluorescent water by the analyte) and mass spectrometry.
The program finally looks at protein analysis from living cells and capillary gel electrophoresis.
Available in English, French, German, Italian and Spanish; PAL, NTSC and SECAM VHS formats.
33 minutes. 1933
Cost: (UK) (non corporate): £95.00 + £5.00 p. & p. + VAT
Cost: (UK) (corporate): £190.00 + £5.00 p. & p. + VAT
Cost: (EU) £95.00 + £5.00 p. & p.
Cost: (Elsewhere) £95.00 + £10.00 p. & p.
A set of three individual programmes on six aspects of thermal analysis - thermal analysis being the technique whereby the changes in physical and chemical properties, upon heating, of a material are measured. The series is comprised of animation, moving and still footage.
Thermal analysis is defined and some of its general uses are given. Differential thermal analysis and differential scanning calorimetry are also defined and the apparatus discussed with an example of each technique.
A comparison of differential thermal analysis and differential scanning calorimetry is made and the factors affecting results such as melting point, chemical reactions and thermal conductivity are discussed. Calibration techniques are then discussed.
Several examples of the uses of differential thermal analysis and differential scanning calorimetry are discussed: (i) analysis of hexaaquocopper (II) sulphate and high alumina cement; (ii) analysis of polymers such as polyethylene terephthalate, polyethylene, and curing epoxy resin; (iii) analysis of organic phase changes such as liquid crystals, phase diagrams and determination of melting points; (iv) pharmaceutical uses include polymorphism (on heating, some pharmaceutical compounds undergo physical changes which lead to a change in physiological effect); and (v) minerals including a look at quartz, calcium carbonate, dolomite (calcium and magnesium carbonate), and clay (brick).
Finally the program ends with a discussion on the advantages of differential thermal analysis and differential scanning calorimetry as analytical techniques.
26 minutes. 1994 PAL and NTSC VHS formats
Cost: (UK) (non corporate): £95.00 + £5.00 p. & p. + VAT
Cost: (UK) (corporate): £190.00 + £5.00 p. & p. + VAT
Cost: (EU) £95.00 + £5.00 p. & p.
Cost: (Elsewhere) £95.00 + £10.00 p. & p.
The technique of thermogravimetric analysis is discussed including the apparatus used, calibration, and the effect of sample size. The thermal decomposition and corresponding mass change of calcium oxalate monohydrate is followed as an example.
The gases used during the analysis are discussed along with the nature of the original sample. Thermogravimetric analysis and its role in the study of reaction kinetics is then looked at. Several examples are then discussed: (i) oxidation considering polymers, metals, and ceramics; and (ii) improvement of the superconductive properties of the yttrium/barium/copper oxide superconductor.
In thermogravimetric analysis, gases are often evolved. The analysis of these gases is known as evolved gas analysis. Several means of detecting the evolved gases are discussed including mass spectrometry.
The chemistry of the event is also looked at. The thermal decomposition of ammonium molybdate (VI) tetrahydrate is used as an example.
27 minutes. 1994 PAL and NTSC VHS formats
Cost: (UK) (non corporate): £95.00 + £5.00 p. & p. + VAT
Cost: (UK) (corporate): £190.00 + £5.00 p. & p. + VAT
Cost: (EU) £95.00 + £5.00 p. & p.
Cost: (Elsewhere) £95.00 + £10.00 p. & p.
The theory behind, and apparatus used in, thermomechanical analysis and dynamic mechanical analysis are, discussed primarily relating to polymers. Applications considered include glass transition and softening temperatures, various types of stress and strain analyses, and polymer curing studies. Future trends in combined techniques are then discussed.
26 minutes. 1994 PAL and NTSC VHS formats
Cost: (UK) (non corporate): £95.00 + £5.00 p. & p. + VAT
Cost: (UK) (corporate): £190.00 + £5.00 p. & p. + VAT
Cost: (EU) £95.00 + £5.00 p. & p.
Cost: (Elsewhere) £95.00 + £10.00 p. & p.
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