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PEOPLE@HES-SO – Annuaire et Répertoire des compétences
PEOPLE@HES-SO – Annuaire et Répertoire des compétences

PEOPLE@HES-SO
Annuaire et Répertoire des compétences

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Portmann Cyril

Portmann Cyril

Professeur HES associé

Compétences principales

Analytical Chemistry

Drug Development

Natural Product Chemistry

HPLC-MS

NMR - Structure determination

  • Contact

  • Publications

  • Conférences

Contrat principal

Professeur HES associé

Téléphone: +41 26 429 67 76

Bureau: HEIA_B20.03

Haute école d'ingénierie et d'architecture de Fribourg
Boulevard de Pérolles 80, 1700 Fribourg, CH
HEIA-FR
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2023

Coupling of dye analysis and compound specific radiocarbon (14C) analysis (CSRA) in heritage sciences
Article professionnel ArODES

Laura Hendriks, Thomas Blattmann, Negar Haghipour, Cyril Portmann

CHIMIA,  77, 11, 792-794

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Résumé:

Natural organic dyes and pigments have been used for millennia to bring colour into our daily lives. Being sourced from a variety of natural sources, they form an extremely varied and large class of compounds, all of which retain the atmospheric 14CO2 of their year of growth. As such these compounds represent ideal candidates for radiocarbon (14C) dating, allowing the identification of or providing information towards the period in which the coloured artefact was created. However, up to now no such analysis has ever been conducted solely on organic colourants within an object. The complex nature of the samples and the sample size limitations with respect to precious and rare art artefacts requires innovative inter- and multidisciplinary approaches. Here we discuss preliminary results in the development of a compound-specific radiocarbon analysis (CSRA) methodology for the analysis of anthraquinone derived red dyes extracted from dyed wool yarns. The aim of this research project is to introduce new routes to date cultural heritage objects, in particular to overcome their intrinsic complexity through the development of CSRA strategies.

2022

Compound specific radiocarbon ( 14 C) dating of our colorful past :
Article scientifique ArODES
from theory to practice

Laura Hendriks, Cyril Portmann

Helvetica Chimica Acta,  2023, 106, 1, e202200134

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Résumé:

For generations, humanity has preserved customs, places, objects, artistic expressions, and values – our cultural heritage. The use of color on cultural heritage objects is ubiquitous and found on artefacts from prehistoric rock art to present day contemporary artworks. The chemical identification of the colored materials used within an artwork often provides information about the work's origin. At the simplest level, a comparison of the materials present with information on their first date of discovery indicates the earliest possible period in which the colored artefact was created. More precise constraints on the date of creation can be provided by radiocarbon (14C) dating, however until today no such analysis has ever been conducted on the compounds responsible for the object's color. The analysis of natural organic dyes and pigments is challenging, as the limited sampling access, their low concentrations and presence in highly complex matrix, are all major challenges to be overcome. The separation of intermingled carbon sources is without question the most difficult problem, yet feasible with the help of compound specific radiocarbon analysis (CSRA). Here, we discuss the potential of radiocarbon dating isolated natural organic dyes and pigments and explore new routes to date cultural heritage objects.

2020

Analytical platforms at swiss universities of applied sciences
Article scientifique ArODES

Christian Berchtold, Verena Christen, Jean-Pascal Bourgeois, Michal Dabros, Olivier Nicolet, Cyril Portmann, Samuel Roth, Olivier Vorlet, Caspar Demuth, Susanne Kern, Chahan Yeretzian, Anika Hoffmann, Franka Kalman, Nadia Marcon, Marc E. Pfeifer, Umberto Piantini, Denis Prim, Jean-Manuel Segura, Mathieu Zollinger, Götz Schlotterbeck

CHIMIA International Journal for Chemistry,  2020, vol. 74, no. 7/8, pp. 618-628

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Résumé:

Numerous projects and industrial and academic collaborations benefit from state-of-the-art facilities and expertise in analytical chemistry available at the Swiss Universities of Applied Sciences. This review summarizes areas of expertise in analytical sciences at the University of Applied Sciences and Arts Northwestern Switzerland (FHNW), the University of Applied Sciences and Arts Western Switzerland (HES-SO), and the Zurich University of Applied Sciences (ZHAW). We briefly discuss selected projects in different fields of analytical sciences

Analytical Platforms at Swiss Universities of Applied Sciences
Article professionnel

Christian Berchtold, Jean-Pascal Bourgeois, Verena Christen, Dabros Michal, Caspar Demuth, Hoffmann Anika, Kalman Franka, Susanne Kern, Marcon Nadia, Nicolet Olivier, Pfeifer Marc Emil, Umberto Piantini, Prim Denis, Portmann Cyril, Samuel Roth, Segura Jean-Manuel, Vorlet Olivier, Chahan Yeretzian, Mathieu Zollinger, Götz Schlotterbeck

Chimia, 2020 , vol.  74, no  7/8, pp.  618-628

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2024

DATING TEXTILE HERITAGE: New insights with 14C analysis of anthraquinone-based red dyes
Conférence

Hendriks Laura, Spack Céline, Ana Serrano, Maarten van Bommel, Portmann Cyril, Negar Haghipour

Dyes in History & Archaeology (DHA 43), 23.10.2024 - 25.10.2024, Leeds, United Kingdom

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Compound Specific Radiocarbon (14C) Dating of Anthraquinone-Based Colourants in Historical Textiles
Conférence

Hendriks Laura, Spack Céline, Portmann Cyril, Negar Haghipour

4th CSRA workshop, 10.04.2024 - 13.09.2024, Delmenhorst, Germany

2023

Compound Specific Radiocarbon (14C) Dating of anthraquinone-based colourants in historical textiles
Conférence

Hendriks Laura, Portmann Cyril, Ana Serrano, Negar Haghipour, Maarten Van Bommel

Dyes in History and Archaeology (DHA42), 31.10.2023 - 03.11.2023, Copenhagen, Denmark

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