How to obtain a representative sample servizio of pigments
Per this case, it is well known that (1) the thickness of the surface alteration layer is variable, (2) the preparation of verso thin section requires per small volume but per suitable surface and (3) an accurate chemical analysis may require per variable registro depending on the chosen technique.
Sopra this case, the researcher ple that shows the cross-section
Archaeometric analyses can move along the path of non-destructiveness or destructiveness. Between these two end-members, different levels of destructivity and accuracy can be achieved (addirittura.g. highly destructive, minimally-destructive). Provided the same quality of the results obtained, the most obvious approach would be that of non-destructiveness; however, it should be emphasised that, often, non-destructive techniques cannot provide sufficiently accurate or comparable results onesto those obtained with destructive methods. Therefore, on the one hand, the researcher risks collecting per lot of quick, cheap and non-destructive scadenza that cannot provide unquestionable answers and, on the other hand, momento inaccuracy can lead puro a waste of time and money.
Therefore, the choice of analytical techniques should first find verso balance between the accuracy requirements of quality research and the conservation needs and then direzione sampling esatto the selection of suitable samples. (more…)