INSECTS ELIMINATION IN HISTORIC COLLECTIONS USING LOW ... · Nieves Valentín Rodrigo Biodeterioro...
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INSECTS ELIMINATION IN HISTORIC COLLECTIONS USING LOW OXYGEN ENVIRONMENTS.
VELOXY SISTEM
Nieves Valentín RodrigoBiodeterioro Materiales Orgánicos
Instituto del Patrimonio Cultural de España (IPCE)
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INSECTS ELIMINATION IN HISTORIC COLLECTIONS USING LOW OXYGEN ENVIRONMENTS.
VELOXY SISTEM
Nieves ValentinResearch Scientist
Instituto del Patrimonio Cultural de España. Madrid. (Spain)
Tiziana PlebaniHead of Preservation and Restoration.
Biblioteca Natzionale Marciana – Venezia. (Italy)
COLLECTIONS DE-INFESTATION: EXPERIMENTATION OF VELOXY BY MARCIANA NATIONAL LIBRARY
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BIODETERIORATION
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VELOXYVELOXY®® is the outcome of the is the outcome of the European funded project:European funded project:
SAVE ARTSAVE ART (1998 (1998 -- 2000)2000)
R.G.I. Resource Group Integrator(project co-ordinator)
Central Science LaboratoryMASTER Instituto del Patrimonio Cultural de EspañaIstituto Centrale per la Patologia del LibroNaturhistoriska Riksmuseet
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LOW OXYGEN ENVIRONMENTS USING INERT GASES
FOR INSECTS ELIMINATION AND MICROBIAL CONTROL
PREVIOUS RESERACH
1987-1989. Nieves Valentín. The Getty Conservation Institute
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Valentin, N. "Mummy deterioration halted by nitrogen atmosphere" Nature”. Vol 338: 463 (1989)
Valentin, N., Bergh, J.E., Ortega, R., Åkerlund, M., Hallström, A. & Jonsson, K. (2002)“Evaluation of a portable equipment for large scale de-infestation in museum collectionsusing a low oxygen environment”. 13th Triennial Meeting. Preprints of ICOM Committee for Conservation 1: 96-101. Paris: ICOM
Valentin, N. and Preusser F. "Insect control by inert gases in museum, archives and libraries“Restaurator. 11: 22-33 (1990)
Valentin, N., Lidstrom, M., and Preusser, F. "Microbial control by low oxygen and low relative
humidity environments" Studies in conservation. Vol. 35. 4: 222-230 (1990)
WORKS DEVELOPED USING LOW OXYGENENVIRONMENTS
Valentín, N. "Comparative analysis of insect control by nitrogen, argon, and carbondioxide in museum archive and herbarium collections”. International Biodeterioration and Biodegradation. 32: 263-278.(1993)
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DI-INFESTATION TREATMENTS USING NITROGENIN SPANISH MUSEUMS, ARCHIVES AND LIBRARIES
1991-2005
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INSECTS IDENTIFICATION
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Anobiidae
Dermestidae
Rhinotermitidae
Lyctidae
Cerambycidae
Tineidae
Liposcelidae Ptiniae
Others
Insects commonly identified in Spanish Museums
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TREATMENTS USING NITROGEN
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SAVE ART: TO SAVE THE ARTISTIC HERITAGE FROM INSECTS WITHOUT USING TOXIC CHEMICAL COMPOUNDS
(1998 (1998 -- 2000)2000)
ITALY
R.G.I. Resource Group IntegratorDr. Ercole Gialdi. (Co-ordinator)
MASTERDr. Bernardo Castellaro
Istituto Centrale per la Patologiadel LibroDr. Carlo Federici
ENGLANDCentral Science LaboratoryDr. Chris Bell
SPAINInstituo del Patrimonio Cultural de EspañaDr. Nieves Valentin
SWEDEN
Naturhidtoriska RiksmuseetDr. Monika Akerlund
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Some researchers of SAVE ART project
J.E. Bergh
Simon Conyers
N.Valentin
M.Akerlund
E. Gialdi
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EQUIPMENT
• Using a novel equipment, VELOXY®that creates a lowoxygen environmentinside plasticenclosures where theinfested objects are located
• It produces an inertgas: NITROGEN
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OBJECTIVES
• To offer an alternative treatment to toxic insecticides
• To develop a portable an effective equipment for large scale de-infestation in museum and archive collections
• To protect health of users and environment
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METHOD• Identify the insect
• Construct an hermetic bubble using high barrier plastic containing the infested objects
• Replace atmospheric air in the bubble by nitrogen until reduce the oxygen concentration at the adequate flow, temperature and relative humidity
• Disconnect the nitrogen flow and maintain a low oxygen environment. The exposure time depends on the size of the object, material structure and type of insect
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0
10
20
30
40
50
60
70
80
90
100
% m
orta
lity
Larvae tolerance to 0.01% oxygen at 25ºC
Anobium punctatumHylotrupes bajulus
55 65 75 85 95% RH
0
10
20
30
40
50
60
70
80
90
100
% m
ort
alit
y
Larvae tolerance to low oxygen at 20ºC
55 65 75 85 95
% RH
Insect mortality 20 days exposureNieves Valentín RodrigoBiodeterioro Mat. Orgánicos IPCE
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In sec tG e n us
T em p er atu re( ºC)
R H%
O 2%
T i me(d a y s )
H ylo tr u p e s
2025
2025
35 -6035 -60
60 -8060 -80
0 .005
2414
4030
A n o b i umL a sio d erm a
L y ctu sN ic o biu m
O li g o m eru sS te g o biu mX e stob iu mA n t hre n usA ttag e n u s
2025
2025
35 -6035 -60
60 -8060 -80
0 .03
2015
3015
B l att e laP e rip la n eta
2025
2025
35 -6035 -60
60 -8060 -80
0 .2
145
2510
M e ziu m
2025
2025
35 -6035 -60
60 -8060 -80
0 .2
1510
2518
T r ibo li u m
2025
2025
35 -60
60 -8060 -80
0 ,1
2814
3020
D er m es te sT r o g o d erm a
2025
2025
35 -6035 -60
60 -8060 -80
0 .1
3018
4025
Ti n e ola
2025
2025
35 -6035 -60
60 -8060 -80
0 .2
1416
2515
Li p o s ce lis
2025
2025
35 -6035 -60
60 -8060 -80
0 .3
158
2028
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CONTROL DEL BIODETERIORO POR ANOXIA
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LARGE SCALE TREATMENTSMurcia. Spain. 2.000
LARGE SCALE TREATMENTSMurcia. Spain. 2.000
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LARGE SCALE TREATMENT
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GENERAL GUIDELINE FOR DE-INFESTATION
DELICATED MUSEUM OBJECTSPainting, textiles, books, furniture, wood, leather
ENVIRONMENTAL CONDITIONS
• Temperature > 18ºC, in a range of 21-23ºC.
• Relative humidity: identical as room conditions
• Oxygen concentration: < 0.1%
• Exposure time: 3 - 7 weeks depending on RH, insect and
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MARCIANA NATIONAL LIBRARYLow oxygen treatments using VELOXYMARCIANA NATIONAL LIBRARY
Low oxygen treatments using VELOXY
TIZIANA PLEBANIHEAD OF PRESERVATION AND RESTORATION.
BIBLIOTECA NATZIONALE MARCIANA -VENEZIA . ITALY
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SAVE ART PROJECT
FINDINGS AND CONCLUSIONS
ACHIEVED
Nieves Valentín RodrigoBiodeterioro Mat. Orgánicos IPCE
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FINDINGS
• Production of a portable equipment to treat in situ infested art objects
• Instrumentation to mesure parametersduring the process.
• Production of specific plastic to preserve historic objects for long-term storage, available for archives, libraries, museums and private collections.
Nieves Valentín RodrigoBiodeterioro Mat. Orgánicos IPCE
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ADVENTAGES
• It is easy to use
• Professionals will not need to handle toxic and dangerous products
• It is safe for public in Museums and Archives
• It is safe for the environment
• The cost/treatment is reduced
• It works in a dynamic system in situ without transporting art pieces avoiding risk of damage
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CONCLUSSION
• Veloxy® was found to be a useful tool for the de-infestation of historic objects, including large size
• The plastic used was easy to handle and showed acceptable aging.
• The moister content of the material should be controlled to guarantee the efficacy for de-infestation and avoid desiccation of art objects
• To decrease oxygen level in large scale treatments is difficult and requires higher personal cost.
Nieves Valentín RodrigoBiodeterioro Mat. Orgánicos IPCE
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TO BE IMPRUBEDØ The compresor can be noisy
Ø Nitrogen flow produced (1.5 l/min) was low for largescale treatments
Ø Nitrogen flow decreases when it is humidified
Ø In most of the equipments N2 flow is inversely proportionalto its purity
Ø To solve these problems increases the cost of theequipment significantly.
Nieves Valentín RodrigoBiodeterioro Mat. Orgánicos IPCE
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IN ADDITION:
Ø Pest control managment is required to prevent re-infestation
Ø Environmental parameters should be controlled and corrected
Ø A specific preventive conservation program is essential
to avoid further risks
IN THE BUILDING
Nieves Valentín RodrigoBiodeterioro Mat. Orgánicos IPCE
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THANK YOU VERY MUCH
FOR YOUR ATTENTION
Nieves Valentín RodrigoBiodeterioro Mat. Orgánicos IPCE