Towards the non-destructive analysis of multilayered samples: A novel XRF-VNIR-SWIR hyperspectral imaging system combined with multiblock data processing

Advanced portable micro-SORS prototype coupled with SERDS for heritage science

“…1) specifically prepared at the Microchemistry and Microscopy Art Diagnostic Laboratory (M2ADL) of the University of Bologna have been analysed. 22…”

“…1) specifically prepared at the Microchemistry and Microscopy Art Diagnostic Laboratory (M2ADL) of the University of Bologna have been analysed. 22 The blue left leg of the right man (S3) exhibiting a high degree of fluorescent background was selected to illustrate the SERDS fluorescence mitigation effect: it consists of a layer of lapis lazuli pigment (Na,Ca) 8 [(S,Cl,SO 4 ,OH) 2 |(Al 6 Si 6 O 24 )] mixed with egg binder. Two other areas have been chosen to test the synergy of micro-SORS and SERDS methods: the brown pants of the left man (S4) composed by a layer of Sienna pigment (which consists in 50% iron oxide and varying amounts of clay and quartz) with egg binder over a layer of white lead ((PbCO 3 ) 2 •Pb(OH) 2 ) with glue binder; and the blue leg of same man (S5), composed by a layer of lapis lazuli with egg binder over a layer of Prussian blue (Fe III 4 [Fe II (CN) 6 ] 3 ) with glue binder.…”

2023 atomic spectrometry update – a review of advances in X-ray fluorescence spectrometry and its special applications

“…Obtaining stratigraphical information about the distribution of different organic and inorganic components without damaging the sample is always a major challenge. Catelli et al 77 employed both a state-of-the-art analytical set-up, able to record VNIR, SWIR and XRF spectrometry data simultaneously, and innovative multivariate and multiblock high-throughput data processing for the analysis of multi-layered paintings. Elemental and molecular information could be obtained for both surface and subsurface layers across the investigated area.…”

Atomic spectrometry update: review of advances in the analysis of metals, chemicals and materials

“…A recently commercialised instrument capable of making simultaneous measurements of XRF, visible & near-infrared (380–1100 nm) and short wave infrared reflectance spectroscopy (1100–2500 nm) was applied to the analysis of a multi-layered painting. 316 It was therefore capable of obtaining atomic and molecular information simultaneously from samples. Data obtained were imported to an innovative multivariate and multi-block, high throughput data processing algorithm.…”