High-speed and high-resolution 2D and 3D elemental imaging of corroded ancient glass by laser ablation-ICP-MS

Abstract

In this work, laser ablation-inductively coupled plasma-mass spectrometry was used in scanning mode to investigate for the first time glass weathering mechanisms using high-resolution 2D and 3D elemental maps of...

Photonic crystals built by time in ancient Roman glass

“…Similarly, the iron distribution increases with depth, yet not to the extent observed for sodium. This difference in the modifiers leaching profiles reflects the preferential dissolution of more soluble cations during the leaching process ( 23 ) caused by their intrinsic diffusion coefficients. Additionally, the 3D volume reconstructions clearly show the accumulation of silica and the corresponding depletion of modifiers and chromophores at the surface of the patina.…”

“…Helium was used as carrier gas to transport the ablated materials to the ICP-MS. The glass fragments were analyzed following a previously reported analytical method ( 23 ) and the data analysis was carried out using the software HDIP (Teledyne Photon Machines, Bozeman, MT, USA) and Matlab. Specifically, the following parameters were used for the laser ablation: He gas flow cell = 0.25 L min −1 , He gas flow cup = 0.25 L min −1 , transfer line ARIS, fluence = 4.0 J cm −2 , spot size = 20 µm 2 , washout time = 20 ms, ablation mode set to fixed dosage = 7, repetition rate = 280 Hz, scanning mode = monodirectional raster.…”