Ion Exchange Chromatography

Ion exchange chromatography was first used for the analysis of samples from works of art in 1969 when the successful analysis of antique and modern art specimens was reported. The eluted amino acids were detected by optical density with ninhydrin, then the percentage amino acid composition was calculated for each sample. Samples of gelatine, casein, glair, tempera and even animal horn were characterized using this method.

The use of ion exchange chromatography in this particular area is problematic: the method of sample preparation is both lengthy and complex, pH gradients are difficult to control precisely and the required sample size of paint is relatively large when put into the context of a specimen to be removed from a valuable work of art. Furthermore, museums and galleries are notoriously short of both money and space, thus specific single-purpose equipment is deemed unaf-fordable by many institutions.

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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