Researchers Scanned Charred Papyrus With X-Ray Ink Method
A new method identifies lead-based ink in carbonized scrolls, potentially unlocking texts buried in 79 CE.
Updated on Oct. 11, 2026 in Geology
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Researchers have developed a method using X-ray scanning to detect lead content within charred papyrus, a process validated on modern carbonized test scrolls. This research-stage technique aims to prioritize the digital unrolling of ancient scrolls damaged by the eruption of Mount Vesuvius.
Why it matters
High-resolution X-ray scanning time is both expensive and limited, making it difficult to scan entire collections of fragile, unreadable scrolls. This detection method offers a way to identify which scrolls contain legible ink before committing to more intensive imaging resources.
The researchers successfully imaged text in 40mm by 110mm carbonized scrolls created by heating papyrus in furnaces between 400°C and 900°C. The technique relies on the fact that lead—a dense metal—blocks X-rays far more effectively than the surrounding carbonized papyrus.
The players
PLOS One
A peer-reviewed, open-access scientific journal that publishes research across all areas of science and medicine.
NIST
The National Institute of Standards and Technology, a federal agency that provides physical science measurements and standards.
UC Berkeley
A public research university known for its extensive work in digital humanities and ancient manuscript analysis.
The details
The team created artificial manuscripts by writing with lead-infused ink, which researchers identified in a 2016 analysis of Herculaneum fragments. They then carbonized these scrolls in a sealed furnace and used a handheld X-ray scanner to detect the metallic deposits. This pre-scanning process allows scientists to map the internal structure and ink placement before using advanced synchrotron imaging to read the text.
Timeline
79 CE: Mount Vesuvius erupted and buried the original papyrus scrolls.
1752: The Herculaneum papyri were discovered near Naples.
2016: Scientists identified lead within the ink of Herculaneum fragments.
October 11, 2026: The study was published on Earth.com.
The Tech Race
This development follows years of effort to read the Herculaneum scrolls, which are currently too fragile to be physically unrolled. By providing a filter for ink density, this method accelerates the triage process for the global research effort attempting to reconstruct ancient libraries.
While the technology is currently in the research phase, it will eventually allow scientists to scan more fragments from the Herculaneum collection. This workflow improvement increases the probability that more lost classical texts will be recovered and made accessible to the public.
The takeaway
This method establishes that lead-based ink can be detected through heavy carbonization using portable scanners. Researchers will now look to apply this workflow to the actual 1752 discovery fragments to determine if the internal text can be successfully imaged.
Further reading
For broader context on how researchers analyze ancient materials, see the latest work in Geology.
Source note: This article includes information reported by Earth.
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