Natural organic products such as oils, resins, waxes, plant gum, animal glue, dyes are commonly found in museum objects. In the conservation of paintings, furniture and ethnographic objects, it is always a challenging job for conservators to identify these kind of natural materials in order to be able to determine on the most suitable method in treating the objects.
By using Gas Chromatography, even trace amount of natural organic mixture can be separated by the carrier gas (mobile phase) and the column (stationary phase). The separated compounds will reach the detector at different time according to their interaction with the column material. A chromatogram will thus be generated from the signal detected, which is very useful for identification and understanding of the properties of the concerned natural organic material.