Mapping the ligand-binding sites. Secondly, accurate and precise radiocarbon dating of these sites in the past has proven to be difficult. The HCl insoluble fraction was then quantitatively extracted and used to determine if any collagen was present based on infrared spectroscopy. University of Durham. It should be highlighted that ultraf iltration usually results in lower yields than non. Piez KA.
Collagen decay has also been modelled in this same way, although it has become increasingly evident that collagen decay does not follow this same pattern.
There was a problem providing the content you requested
Here, we present an assessment of laboratory precision and overall measure of performance of two processing blanks from the region. The routine high-performance liquid chromatographic extraction of five amino acids: Haynes, CV, Radiocarbon: The results showed that isotopic variability, when existing, is related to the interindividual differences rather than the different protocols. All of the bone samples that yielded 14 C dates also gave excellent collagen fingerprints, and conversely those that gave poor fingerprints also failed dating. Download full-text PDF. The latter proves to be a good indicator of charcoal preservation 24 and in practice determines the yield of clean charcoal and hence whether or not the sample can be dated.