%0 Journal Article %T A multi-analytical approach towards the investigation of Subarctic Athapaskan colouring of quillwork and its sensitivity to photo-degradation %A Troalen, Lore; Röhrs, S; Calligaro, T; Pacheco, C; Kunz, S; del Hoyo-Meléndez, J M; Hulme, Alison N %D 2016 %8 2019-01-08 %I Elsevier %J Microchemical Journal %V 126 %P 83-91 %U http://www.nms.ac.uk/about-us/collections-departments/collections-services/ %X Non-European dyed materials other than textiles have received comparatively little systematic analysis, this is particularly true for objects made with dyed porcupine quills. This paper presents a comprehensive study of a group of Athapaskan porcupine quill specimens collected in 1862 which are held within the collections of National Museums Scotland, UK. Due to sampling limitations micro-destructive testing, or non-invasive analysis using PDA-UPLC, Raman Spectroscopy and PIXE were used to characterise the dye sources and metallic mordants. RBS was used to obtain additional information on the depth-profiling of the mordants in the keratin-based quill. The sensitivity of the quill specimens to photo-degradation was evaluated using Micro Fade Testing (MFT). The results from this multi-analytical study will be used to inform future display regimes of this unique collection. %[ 2024-03-28 %9 Journal article %~ Hyku %W National Museums Scotland