Netherlands Institute for Conservation, Art and Science

NICAS Colloquium

13Oct2016 12:00 - 13:00


We are very pleased to announce the next edition of the NICAS Colloquium on Thursday 13 October from 12.00 to 13.00 hrs. Ariane Torres Knoop, post-doc researcher at the Van 't Hoff Institute for Molecular Sciences (University of Amsterdam), will be the chair of the colloquium. The colloquium will take place in conference room B of the Atelier Building (Hobbemastraat 22, Amsterdam).

The presenters during the colloquium are:


  • Janneke Nienhuis - Corrosion products on archaeological bronze are worth keeping

It will be revealed in this presentation that there is more information hidden in corroded artefacts than currently assumed. By considering life phases of excavated bronzes from production to conservation, new insights into corrosion products, original microstructures and drawbacks of coating application are generated. Resulting practical suggestions for archaeologists, metallurgists and conservators will be presented as well.

Janneke Nienhuis obtained her Master's degree in Materials Science and Engineering at Delft University of Technology in 2009. She is currently completing her interdisciplinary dissertation about archaeological bronze at Delft University of Technology, in cooperation with the Cultural Heritage Agency of the Netherlands (RCE) and Leiden University, under supervision of Jilt Sietsma, Joris Dik, Ineke Joosten and David Fontijn.


  • Han Neevel - Use of a new sampling technique for identification of 19th century inks for drawing and writing

In 2015 a new micro-sampling method was developed at the Cultural Heritage Agency of the Netherlands (RCE). With an inert magnesium oxide micro sampling (MOMS) rod only a few particles are scraped off the ink surface. As this sample is very small, it can be taken anywhere without any visible damage. The sample can be analysed with different techniques, including Scanning electron microscopy with Energy-dispersive X-ray spectroscopy (SEM-EDX) and Ultra-high performance liquid chromatography with Photodiode array detector attached to Electrospray ionization mass spectrometer (UHPLC/PDA/ESI-MS). Also, Surface Enhanced Raman Spectrometry can be applied.

Han Neevel is the specialist for analytical chemical research at the RCE. He conducts chemical research to develop new techniques of passive and active conservation of objects of art and science, as well as develop new analytical methods for material identification. Research topics are: 1. Non-destructive identification of inks on Van Gogh's drawings and letters, 2. micro-destructive light-fastness assessment of dyes on drawings, manuscript and textiles.

More information about the NICAS Colloquium can be found here.

Published by  NICAS