Today, chromatography is embedded in the battery of analytical approaches used to interrogate the surviving materials and residues of past societies. The acceleration of research in bimolecular archaeology in the last decade can largely be attributed to the availability of increasingly sophisticated analytical techniques. GC-MS is becoming the routine approach for the characterization of lipids and natural products, and compound-specific carbon isotope determinations are proving their value in identifying the origin of residue components. Chromatographic

Figure 4 Structures of birch bark triterpenoids identified in Figure 3. (Reproduced with permission from Gundel LA and Lane DA (1999).)

techniques are contributing ever more to our understanding of the relationship between past human populations and their use of plant and animal resources, and of myriad ways in which artefacts were used.

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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