Analysis of Paint Media

The analyses of oil-based media are well documented, but any information on the nature of other paint media has been obtained primarily via microscopic staining methods or crude solubility tests. Existing methods of analysis provide the basis for the separation of the general categories of binding media (oil, gum and protein) by qualitative means: for example, oil and protein layers can be distinguished by the differential staining of cross-sections, whilst colorimetric spot tests can be used for the identification of polysaccharide gums.

The applicability of these microanalytical techniques in situ can be advantageous, but the results can be misleading or inaccurate and for this reason these techniques are best used in conjunction with other analytical methods.

Such simple qualitative techniques, including paper and thin-layer chromatography (TLC), are adequate where merely the general category of binding medium is required, or where the material contains unique constituents (e.g. hydroxyproline in gelatine). However, only quantitative chromatographic techniques will enable differentiation between the similar binding media where they have no distinctive composition, such as in egg and milk proteins.

Solar Panel Basics

Solar Panel Basics

Global warming is a huge problem which will significantly affect every country in the world. Many people all over the world are trying to do whatever they can to help combat the effects of global warming. One of the ways that people can fight global warming is to reduce their dependence on non-renewable energy sources like oil and petroleum based products.

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