How to obtain verso representative sample set of pigments

How to obtain verso <a href="">come per vedere chi si ama sul friendfinder-x senza pagare</a> representative sample set of pigments

Durante 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 a small elenco but verso suitable surface and (3) an accurate chemical analysis may require a variable volume depending on the chosen technique.

Durante 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 (ancora.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 sicuro those obtained with destructive methods. Therefore, on the one hand, the researcher risks collecting a lot of quick, cheap and non-destructive datazione that cannot provide unquestionable answers and, on the other hand, momento inaccuracy can lead to per 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 guide sampling preciso the selection of suitable samples. Per this regard and based on what has been said previously, it is good esatto underscore that sampling does not necessarily involve the physical taking of material. Con the case of non-destructive techniques, sampling may simply address the selection of the analysis spots.

To conclude, while before proceeding with sampling, it is necessary to collect all available data from any field of study; during sampling, it is mandatory to properly record and document all phases and, after sampling, it is required to remain open and flexible to answer new questions that ples, the overall research should record the various actions and use a critical survey. This survey should be equipped with specific signs that provide a cartographic mapping functional to sampling. Regardless of the use of new technologies for the graphic representation of historical buildings, we should create standardised protocols to record sampling through, for example, a precision topographic positioning.

Therefore, the sampling methods will be crucial puro obtain per suitable sample while observing the fundamental principle of conservation, or sopra other terms, of minimum sampling

Per sampling of pigments is carried out primarily based on colours. Sopra this way, by counting the number of colours visible per the painting, the number of samples sicuro be investigated is also obtained. Con large-scale paintings such as wall paintings, the sampling of verso solo sample per colour may prove insufficient. Therefore, it will be necessary sicuro carry out multiple samplings for each colour preciso evaluate any changes. This reasoning is valid both per the case of natural and artificial pigments, as it provides the possibility of identifying different technologies and/or provenances.

When the analysis involves non-destructive instrumentation, it is undoubtedly desirable onesto consider a large increase durante the spots to be analysed. When, on the other hand, the research question requires the use of destructive investigations, the number of samples will adapt to the minimum necessary and will possibly be taken per the least exposed portion.

For the study of the painting technique, there is an additional difficulty, as the analysis needs onesto go beyond the pictorial lungometraggio, per order esatto reach the preparatory layer. The first method does not necessarily damage the artefact but is not always resolutive, while the second has the advantage of ensuring an exhaustive response but is destructive. The researcher must, therefore, choose the first or second method based on conservation needs. Verso third option is to be considered when the analysis concerns amovibile artwork and consists of instruments with per higher penetration capacity than conventional techniques, such as Raman or portable Quantita-ray fluorescence.