![]() N1 - This study was funded by an ETH-grant (ETH-21 15-1). T1 - Selective dating of paint components Radiocarbon dating of lead white pigment This study thus proposes new strategies for 14C dating of artworks.", A single lead white paint sample can yield two distinct radiocarbon ages, one from the carbonate and one from the natural organic binder. Additionally, a two-step method was developed to allow 14C analysis of both the lead white pigment and oil binder from the same sample. We hereby show that the lead white pigment can be dated by 14C and used as proxy for the time of creation of an artwork. The method was applied to two case studies, where lead carbonate samples were dated in two oil paintings, one Baroque and one from the 20th century. Resulting 14C ages on lead white pigments produced following the traditional stack process, where carbonate groups results from the incorporation of CO2 originating from fermentation, matched the production years, while radiocarbon dating of lead white made using other industrial processes indicate that 14C depleted CO2 was used in their production. In this study, the possibility of radiocarbon dating lead white pigments alone and in oil paints was explored using well-dated lead white pigments and paints. This study thus proposes new strategies for 14C dating of artworks.Ībstract = "Lead white is a man-made white pigment commonly used in works of art. Pricing does not include fingerprint rolling fees, which may vary by location.Lead white is a man-made white pigment commonly used in works of art. The law enforcement agencies listed below provide fingerprint cards only. There are no live scan locations in Oklahoma with electronic submission to National Background Information. Pricing does not include fingerprint rolling fees for mailing ink cards, or live scan fees for electronic submission.Įnter city, state or zip code to view a map of nearby fingerprinting locations. The fingerprint cards will be returned to you for submission to National Background Information. Police departments, sheriff's offices and other government agencies provide fingerprinting services to the general public. Affiliate Fingerprinting Locations may provide additional background check services. Some locations will use a live scan machine to capture the fingerprints and then print the FD-258 card. Live Scan operators may contact us for information about becoming a National Background Information preferred location.Īffiliate locations can capture fingerprints on a standard FD-258 fingerprint card for submission to the FBI. Preferred Live Scan Locations are not available in all areas. Preferred Live Scan Locations may provide other background check services such as passport photos and drug testing services. Preferred locations provide the fastest service by electronically transmitting fingerprints to National Background Information.
0 Comments
Leave a Reply. |