techniques for cultural heritage research in the pomerania region katarzyna komar, gerard...
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Techniques for Cultural Heritage Research in the Pomerania Region
Katarzyna Komar, Gerard Śliwiński, Marta Jasińska, Mirosław Sawczak, Aleksandra Kamińska
Pol.Acad.Sci,IF-FM, Gdańsk, Poland
Outline who are we? Activity - techniques - application examples
one of the first Bible printed in Polish - 1591
Historical documents analyzed by the LIBS, LIF, colorimetryLIBS analysis used to control the laser cleaning process at 532 nm (on line and in situ) - removal of the blue pencil hand pagination
The cleaning is monitored by recording the spectra corresponding to consecutive
laser pulses Intensities of spectral lines due to surface
contaminants decrease exponentiallyLacona IV ‘2001, J.Cult.Herit.
invoice from XIX c.
distinguishing between peaks originating from contamination and paper substrate
LIBS analysis of surface contamination and paper substrate; as well as print letters and pen marks.
285 290 295 300 305 310 315
0,2
0,4
0,6
0,8
1,0
FeI + FeII
FeIMnI
CaII
AlI
AlI
SiI
MgI
inte
nsity
[a.u
.]
wavelength [nm]
rusty stain
LIF spectra of model cotton paper, non-sized
UV bands increase due to treatment at 355 nm
30m
Laser treatment at 266 nm results in yellowing
266 355 532 10640,8
0,9
1,0
1,1
1,2laser cleaned samplereference sample
Cop
per
ind
ex
laser wavelength /nm
Measurements of chemical propertiesagree with observation of the LIF spectra
XIV/XV c. wooden crucifix
C
B
A
F
D, E
XIV/XV c. wooden crucifix
C
B
A
F
D, E
LIBS profile of sample A - polychrome of the hand, and the Raman spectrum - inset.
XIV/XV c. wooden crucifix
C
B
A
F
D, E
LIBS profile of the gold sample surface (a), the decrease in intensity recorded for the
1, 2 and 3 excitation pulse (inset), and spectrum recorded for
the boliment (b).
XIV/XV c. wooden crucifix
C
B
A
F
D, E
The green pigment of the thorn crown; the elemental composition observed in the
visible spectral range by means of the LIBS technique agrees with the pigment
compounds found in the Raman spectra.
XIV/XV c. wooden crucifix
C
B
A
F
D, E
Raman spectra of the intense red pigment layer of perizonium,
and the inside part of haunch festoon, samples D, E (a),
and of the side wound, sample F (b).
4ax
4ay5 10 15 20 25 30 35
0
2000
4000
6000
8000
10000
12000
14000
16000
Fe
Fe
Cu
Cu
Pb
Pb
Zr*
Zr*
Sn
Sn
Sb
Sb
Sb
As
As
Inte
nsi
ty [c
ou
nts
]
Energy [keV]
4ax_1 4ax_2
5 10 15 20 25 30 350
1000
2000
3000
4000
5000
Fe*
Fe*
Pb
Pb
Zr*
Zr* Sn
Sn
Sb
Sb
Sb
Au
Au
Mn
Ag*
Ba
Inte
nsity
[cou
nts]
Energy [keV]
4ay_1 4ay_2
fragments of mosaic, XIV c.teutonic castle, Malbork
analysis performed by a portable XRF spectrometer
laser cleaning of Gotland sandstone SEM and EDS inspection of effects
before cleaning
after cleaning
laser cleaning of Gotland sandstone acoustic monitoring of the process
non-cleaned cleaned
Acknowledgements - Colleagues and Groups of the programme - Actions G7, G8
Marta Jasińska, Mirek Sawczak, Katarzyna Komar PASci, IF-FM, Gdansk
Joern Bredal-Jørgensen Konservatorskolen, Copenhagen Margarita Martin Instituto de Química Física Rocasolano, Madrid
Aleksandra Kamińska Agency for Integration of Conservation Activities - AICA, Gdansk
Marco Ferretti CNR - Istituto per le Tecnologie Applicate ai Beni Culturali, Roma
Bogdan Constantinescu IFIN- Institute of Atomic Physics, Bucharest
Techniques for Cultural Heritage Research in the Pomerania Region