Laser-Induced Breakdown Spectroscopy for depth-profile analysis of historical painting model samples

POSPÍŠILOVÁ, Eva, Karel NOVOTNÝ, Jozef KAISER, Pavel POŘÍZKA, Richard ŠEVČÍK, David HRADIL and Janka HRADILOVÁ. Laser-Induced Breakdown Spectroscopy for depth-profile analysis of historical painting model samples. In CSI XL - IX EMSLIBS. 2017.

Basic information

• Original name: Laser-Induced Breakdown Spectroscopy for depth-profile analysis of historical painting model samples
• Authors: POSPÍŠILOVÁ, Eva (203 Czech Republic, belonging to the institution), Karel NOVOTNÝ (203 Czech Republic, guarantor, belonging to the institution), Jozef KAISER (203 Czech Republic), Pavel POŘÍZKA (203 Czech Republic), Richard ŠEVČÍK (203 Czech Republic, belonging to the institution), David HRADIL (203 Czech Republic) and Janka HRADILOVÁ (203 Czech Republic).
• Edition: CSI XL - IX EMSLIBS, 2017.

Other information

• Original language: English
• Type of outcome: Conference abstract
• Field of Study: 10406 Analytical chemistry
• Country of publisher: Italy
• Confidentiality degree: is not subject to a state or trade secret
• RIV identification code: RIV/00216224:14310/17:00099873
• Organization unit: Faculty of Science
• Keywords in English: Historical painting model samples; LIBS
• Tags: International impact

Abstract

Model multilayered painting samples containing traditional pigments were prepared on a wooden support (5 x 10 cm) with each layer partly revealed. Typical model sample consisted of three to four layers, with first, so called ground layer, containing clay or chalk in organic binder, second organic layer, and the third or in some cases fourth layer containing inorganic pigments (e.g. Azurite or Prussian Blue) in organic binder or organic dyes (e.g. Carmine Lake) with inorganic medium in organic binder. Thirty laser pulses were applied to one point and individual spectra were obtained for each shot. Broadband spectra were first acquired using Sci-Trace instrument (AtomTrace, Czech Republic) equipped with echelle spectrometer and EMCCD camera. Significant element lines were chosen and samples were re-measured using modified ablation system New Wave UP-266 MACRO equipped with Czerny Turner monochromator and an ICCD detector. Spectra obtained using both LIBS systems were processed to create the depth profiles of the samples. Particular element lines representing each layer (e.g. Cu I 324.7 nm for Azurite) were chosen. Acoustic and total emission signal was used for elimination of drift caused by the strong shot-to-shot LIBS signal variations and changes in physical–chemical properties of different layers. For comparison purposes elemental analysis by hand-held X-ray fluorescence spectrometer Innov-X DELTA Premium was used. The advantages and limitations of LIBS and hand-held XRF are discussed.

Links

• ED1.1.00/02.0068, research and development project: Name: CEITEC - central european institute of technology