TY - JOUR A1 - Malzer, W. A1 - Hahn, Oliver A1 - Kanngießer, B. T1 - A fingerprint model for inhomogeneous ink-paper layer systems measured with micro X-ray fluorescence analysis N2 - Nowadays, micro-x-ray fluorescence analysis has become an established tool for the non-destructive investigation of art objects. However, as these types of sample often forms complex and inhomogeneous layer systems, the quantitative evaluation of the measurements is far from a standard routine. In this paper a fingerprint model is described, which we developed to discriminate between different iron-gall inks of historical manuscripts or compositions. Fundamental parameter methods are used to take self-attenuation, interference from the paper background and diffusion of the ink into the paper into account. The capability of the method to contribute to the solution of archaeometric problems is exemplified by the investigation of an ancient composition. Finally, the restrictions of the model and possible improvements are discussed. Copyright © 2004 John Wiley & Sons, Ltd. T2 - 10th European Conference on Energy Dispersive X-Ray Spectrometry (EDXRS) CY - Berlin, Germany DA - 2002-06-16 PY - 2004 DO - https://doi.org/10.1002/xrs.676 SN - 0049-8246 VL - 33 SP - 229 EP - 233 PB - Wiley CY - Chichester AN - OPUS4-5332 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Beckhoff, B. A1 - Hahn, Oliver T1 - Encviromental Analyses by TXRF-NEXAFS and IR-spectroscopy: Speciation of Bromine in Organics and Characterization of the Organic Matrix T2 - VVIII INternational Bonderence on "X-ray Optics and MIcroanlaysis" CY - Frascati, Italy DA - 2005-09-25 PY - 2005 AN - OPUS4-10543 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - JOUR A1 - Hahn, Oliver A1 - Kanngießer, B. A1 - Malzer, W. T1 - X-ray Fluorescence Analysis of Iron Gall Inks, Pencils and Coloured Crayons KW - X-ray fluorescence analysis KW - Archaeometry KW - Writing materials KW - Restoration KW - Conservation PY - 2005 UR - http://www.jstor.org/journals/00393630.html SN - 0039-3630 SN - 0370-9124 VL - 50 SP - 23 EP - 32 PB - International Institute for Conservation of Historic and Artistic Works CY - London AN - OPUS4-7568 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CHAP A1 - Dedner, B. A1 - Hahn, Oliver A1 - Wolff, Timo ED - Dedner, B. ED - Mayer, T. M. T1 - Ergebnisse der Tintenanalyse KW - Röntgenfluoreszenzanalyse (RFA) KW - Materialcharakterisierung KW - Kunst- und Kulturgut PY - 2005 SN - 3-534-15603-X VL - 7 IS - Kap. 2.2 SP - 1 EP - 13 PB - Wiss. Buchges. CY - Darmstadt ET - Marburger Ausg. AN - OPUS4-7599 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - GEN A1 - Kolbe, M. A1 - Beckhoff, B. A1 - Hahn, Oliver A1 - Karydas, A.G. A1 - Zarkadas, C. A1 - Sokaras, D. A1 - Mantler, M. T1 - Reference-free investigation of an ancient Chinese ceramic by X-ray fluorescence analysis KW - X-ray fluorescence analysis KW - Reference-free investigation PY - 2007 UR - http://www.helmholtz-berlin.de/media/media/oea/web/pr_webseite/druckschriften/berichte/bessy/annual_report_2006.pdf#page=32 SN - 0179-4159 SP - 32 EP - 34 PB - Berliner Elektronenspeicherring-Gesellschaft für Synchrotronstrahlung CY - Berlin AN - OPUS4-14853 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Beckhoff, B. A1 - Hahn, Oliver T1 - Environmental analysis by TXRF - NEXAFS and IR- spectroscopy: speciation of Br in organics and characterization of the organic matrix T2 - EXRS 2006 CY - Paris, France DA - 2006-06-19 PY - 2006 AN - OPUS4-13234 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Hahn, Oliver A1 - Rabin, Ira A1 - Wolff, Timo A1 - Kanngießer, B. A1 - Malzer, W. A1 - Mantouvalou, I. A1 - Schade, U. A1 - Masic, Admir A1 - Weinberg, G. T1 - Non-destructive investigation of the dead sea scrolls N2 - The Dead Sea Scrolls belong to the most important cultural assets of mankind. Their long term preservation and study is a challenge that demands an interdisciplinary approach. As early as the 1950s natural scientists assisted the scholars in studying the scrolls. It was at this time that the first extensive study of the scroll material took place. It was found that most fragments were written not on leather but on parchment. In addition, a method for determining the age of the parchment was developed which is still of value today. In the 1990s the AMS-C14 method confirmed the palaeographic determination of the age of the manuscripts. The use of carbon ink throughout the scrolls is also consistent with the known scribal practices of that time. There are, however, manuscripts, and among them the famous Genesis Apocryphon Scroll, which exhibit ink corrosion, normally associated with iron-gall inks. Today, 60 years after their discovery, a community of scientists from the Jewish National and University Library (JNUL), the Technical University of Berlin (TU Berlin), the Federal Institute for Materials Research and Testing (BAM) and Fritz-Haber-Institute of the MPG (FHI) set out to scientifically investigate the finds of Qumran using the most modern methods. The results of the study will be used to determine the provenance of the texts as well as to contribute to their long-term preservation. A considerable part of the non-destructive investigation is taking place in the Berlin State Library and at the Berliner Elektronenspeicherring-Gesellschaft für Synchrotronstrahlung , BESSY II. Preliminary investigations, performed at the BAM on some fragments, were used to evaluate the extent to which X-ray analytical methods can provide information regarding the geographical origin of the fragments and match the individual pieces. The interpretation of the measurement results is made more difficult by age and storage of the objects. It is believed that ageing processes as well as conservation methods have altered the samples in addition to the changes caused by environmental influences. In collaboration with the TU Berlin, the samples from the parchments found in the caves near Qumran were tested by means of three-dimensional synchrotron based X-ray fluorescence analysis (3D-SyXRF). The aim of this non-destructive investigation was the identification of the inorganic material used in the manufacture of the parchments. The XRF experiments are supported by the non-destructive analysis by means of synchrotron based infrared spectroscopy (SyFTIR) in collaboration with BESSY II as well as optical and electron microscopy in collaboration with Fritz-Haber-Institute (FHI). T2 - Art 2008, 9th International Conference CY - Jerusalem, Israel DA - 2008-05-25 KW - Cultural heritage KW - Archaeometry KW - Micro-XRF KW - Quantification KW - Parchment KW - DSS PY - 2008 IS - CD-ROM SP - 1 EP - 7 PB - ISAS International Seminars CY - Jerusalem, Israel AN - OPUS4-17547 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - JOUR A1 - Kanngießer, B. A1 - Mantouvalou, I. A1 - Malzer, W. A1 - Wolff, Timo A1 - Hahn, Oliver T1 - Non-destructive, depth resolved investigation of corrosion layers of historical glass objects by 3D Micro X-ray fluorescence analysis N2 - 3D Micro X-ray fluorescence analysis was used for the investigation of reverse-glass paintings. The material-specific combination used in reverse-glass paintings leads to damage phenomena reinforced by glass corrosion. To elucidate the mechanism of corrosion processes taking place in the glass object depth profiles of mobile elements are of interest. In order to obtain elemental depth profiles of such kind of fragile objects the method of choice should be non-destructive. Our first results demonstrate the usefulness of the 3D Micro-XRF measurements for this kind of investigations. The assumption that certain binding media may initiate corrosion processes beginning at the interface glass/binding material could be confirmed. KW - Cultural heritage KW - 3D-micro XRF KW - Glass corrosion KW - Quantification PY - 2008 DO - https://doi.org/10.1039/b717286a SN - 0267-9477 SN - 1364-5544 VL - 23 SP - 814 EP - 819 PB - Royal Society of Chemistry CY - London AN - OPUS4-17544 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - GEN A1 - Rabin, Ira A1 - Hahn, Oliver A1 - Wolff, Timo A1 - Mantouvalou, I. A1 - Kanngießer, B. A1 - Weinberg, G. T1 - Dead sea scrolls - development of the analysis methodology T2 - Modern approaches to the conservation and accessibility of cultural and historic monuments CY - St. Petersburg, Russia DA - 2009-10-20 KW - Dead sea scrolls KW - Conservation science KW - Non destructive testing PY - 2010 SN - 978-5-8192-0370-5 SP - 122 EP - 129 AN - OPUS4-23329 LA - rus AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Rabin, Ira A1 - Hahn, Oliver A1 - Wolff, Timo A1 - Mantouvalou, I. A1 - Kanngießer, B. A1 - Weinberg, G. T1 - Material studies on the Dead Sea scrolls T2 - Conference "Preservation and access of monuments of culture and history: modern approaches" CY - Saint Petersburg, Russia DA - 2009-10-20 KW - Dead Sea scrolls KW - Archaeometry KW - Restoration and conservation science KW - Cultural heritage KW - Writing materials PY - 2009 SP - 122 EP - 129 AN - OPUS4-23177 LA - rus AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Hahn, Oliver A1 - Malzer, W. A1 - Kanngießer, B. A1 - Waldschläger, U. T1 - A fingerprint model for inhomogeneous ink-paper layer systems measured with micro X-ray fluorescence analysis N2 - Nowadays, micro-x-ray fluorescence analysis has become an established tool for the non-destructive investigation of art objects. However, as these types of sample often forms complex and inhomogeneous layer systems, the quantitative evaluation of the measurements is far from a standard routine. In this paper a fingerprint model is described, which we developed to discriminate between different iron-gall inks of historical manuscripts or compositions. Fundamental parameter methods are used to take self-attenuation, interference from the paper background and diffusion of the ink into the paper into account. The capability of the method to contribute to the solution of archaeometric problems is exemplified by the investigation of an ancient composition. Finally, the restrictions of the model and possible improvements are discussed. Copyright © 2004 John Wiley & Sons, Ltd. T2 - 10th European Conference on Energy Dispersive X-Ray Spectrometry (EDXRS) CY - Berlin, Germany DA - 2002-06-16 PY - 2002 SP - 120 AN - OPUS4-1403 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Hahn, Oliver A1 - Malzer, W. A1 - Kanngießer, B. T1 - Characterization of iron gall inks in historical manuscripts and music compositions using X-ray fluorescence spectrometry T2 - 7th International Conference on Non-destructive testing and Microanalysis for the Diagnostics and Conservation of the Cultural and Environmental Heritage ; art 2002 CY - Antwerp, Belgium DA - 2002-06-02 PY - 2002 SP - 80 AN - OPUS4-1394 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Hahn, Oliver A1 - Malzer, W. A1 - Kanngießer, B. T1 - Model for inhomogeneous ink paper layer systems measured with micro X-ray fluorescence analysis T2 - 7th International Conference on Non-destructive testing and Microanalysis for the Diagnostics and Conservation of the Cultural and Environmental Heritage CY - Antwerp, Belgium DA - 2002-06-02 PY - 2002 SP - 202 AN - OPUS4-1393 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - GEN A1 - Hahn, Oliver A1 - Malzer, W. A1 - Kanngießer, B. A1 - Erko, A. T1 - Investigation of oxidation and migration processes of inorganic compounds in ink corroded manuscripts PY - 2003 UR - http://www.helmholtz-berlin.de/media/media/oea/web/pr_webseite/druckschriften/berichte/bessy/annualreport2002.pdf#page=262 SN - 0179-4159 SP - 262 EP - 264 PB - Berliner Elektronenspeicherring-Gesellschaft für Synchrotronstrahlung CY - Berlin AN - OPUS4-2461 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Hahn, Oliver A1 - Kanngießer, B. A1 - Wilke, M. T1 - Monitoring of restoration treatments by means of Micro-XRF in combination with Micro-Xanes T2 - XVIII International Conference on "X-ray Optics and Microanalysis" CY - Frascati, Italy DA - 2005-09-25 PY - 2005 AN - OPUS4-10547 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Kanngießer, B. A1 - Hahn, Oliver A1 - Wilke, M. T1 - X-ray fluorescence and X-ray absorption analysis of historical iron gall links T2 - Workshop: RICH - Research Infrastructures for Cultural Heritage CY - Trieste, Italy DA - 2005-12-12 PY - 2005 AN - OPUS4-10933 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - JOUR A1 - Wilke, M. A1 - Hahn, Oliver A1 - Woodland, A. B. A1 - Rickers, K. T1 - The oxidation state of iron determined by Fe K-edge XANES-application to iron gall ink in historical manuscripts N2 - Fe K-edge XANES measurements were performed to determine the oxidation state of iron in iron gall inks. These data are used to investigate the relationship between the Fe oxidation state and ink corrosion in historical manuscripts. The oxidation state is determined using the pre-edge based on a general variation trend that was derived from model compounds and validated here independently on a suite of samples with known oxidation state and Fe in octahedral coordination (i.e. similar to Fe in gall ink). As long as suitable references for the pure ferric and ferrous state of iron gall inks cannot be pointed out, the analysis of the pre-edge of the Fe K-edge represents the only way to acquire absolute values for the Fe oxidation state (Fe3+/Fetot) with spatial resolution for this usually non-crystalline compound. Fe3+/Fetot values for the ink samples vary between ca. 0.7 and 1.0. Spatially resolved analyses performed across ink strokes of various historical manuscripts as well as newly made samples did not reveal any systematic spatial dependence. On average, historical samples that were exposed to conservation treatments show a more oxidized state. However, the measurements demonstrate explicitly that the exposure to X-rays during the XANES acquisition affects the oxidation state of Fe in most iron gall inks. KW - Cultural heritage KW - Conservation science KW - Non-destructive testing KW - X-ray absorption spectroscopy PY - 2009 DO - https://doi.org/10.1039/b904438h SN - 0267-9477 SN - 1364-5544 VL - 24 IS - - SP - 1364 EP - 1372 PB - Royal Society of Chemistry CY - London AN - OPUS4-19975 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - JOUR A1 - Wolff, Timo A1 - Malzer, W. A1 - Mantouvalou, I. A1 - Hahn, Oliver A1 - Kanngießer, B. T1 - A new fundamental parameter based calibration procedure for micro X-ray fluorescence spectrometers N2 - Fundamental parameter based quantification of X-ray fluorescence (XRF) measurement data requires an accurate knowledge of the spectrometer parameters, including the spectral distribution of the excitation radiation. In case of micro-XRF where a polycapillary optic is utilized in the excitation channel this distribution is changed due to the transmission properties of the lens. A new calibration procedure, based on fluorescence data of thin standard samples, was developed to determine the excitation spectrum, i.e., the product of the X-ray tube spectrum and the transmission of the used X-ray optic of a micro-XRF setup. The calibration result was validated by the quantitative analyses of certified multi-element reference standards and shows uncertainties in the order of 2% for main components, 10% for minor elements and 25% for trace elements. The influence of secondary order effects like Coster–Kronig transitions and cascade effects is analyzed and the accuracy of fundamental parameters in common databases is discussed. KW - Polycapillary optic KW - Transmission KW - Micro-XRF calibration KW - Reference free quantification PY - 2011 DO - https://doi.org/10.1016/j.sab.2011.01.009 SN - 0584-8547 SN - 0038-6987 VL - 66 IS - 2 SP - 170 EP - 178 PB - Elsevier B.V. CY - Amsterdam AN - OPUS4-24213 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - GEN A1 - Reiche, I. A1 - Gadebusch, R. A1 - Hahn, Oliver A1 - Reinholz, Uwe A1 - Kanngießer, B. A1 - Malzer, W. T1 - Non-destructive investigations of Mughal Miniatures by a Combined Spectroscopic approach: PIXE, 3D-muXRF and UV-VIS spectroscopy KW - PIXE KW - 3D-micro-XRF KW - UV-VIS spectroscopy KW - Archaeometry KW - Cultural heritage PY - 2004 SN - 84-7820-848-8 SP - 4 pages PB - Fernando El Católico CY - Zaragoza AN - OPUS4-7495 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - GEN A1 - Beckhoff, B. A1 - Hahn, Oliver A1 - Weser, J. A1 - Wilke, M. A1 - Ulm, G. A1 - Jann, Oliver T1 - Environmental Analyses by TXRF - NEXAFS and IR-Spectroscopy: Speciation of Br in Organics and Characterization of the Organic Matrix KW - TXRF-NEXAFS KW - FTIR KW - Environmental analyses PY - 2006 UR - http://www.helmholtz-berlin.de/media/media/oea/web/pr_webseite/druckschriften/berichte/bessy/annualreport2005.pdf#page=30 SN - 0179-4159 SP - 28 EP - 30 PB - Berliner Elektronenspeicherring-Gesellschaft für Synchrotronstrahlung CY - Berlin AN - OPUS4-12410 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER -