Journal
JOURNAL OF CHEMICAL EDUCATION
Volume 98, Issue 3, Pages 966-972Publisher
AMER CHEMICAL SOC
DOI: 10.1021/acs.jchemed.0c00875
Keywords
Analytical Chemistry; Laboratory Instruction; Hands-On Learning/Manipulatives; Problem Solving/Decision Making; Applications of Chemistry; IR Spectroscopy; Fourier Transform Techniques; Raman Spectroscopy; Upper-Division Undergraduate
Ask authors/readers for more resources
Identifying coloring substances in conservation and restoration is important and challenging due to the complex matrix they are inserted in. This laboratory experiment aims to teach students how to use spectroscopic techniques and chemical treatments to overcome this challenge, using quinacridone pigments as an example.
The identification of coloring substances is a relevant task in the field of conservation and restoration, but it can be challenging as in real samples the target analytes are inserted in a very complex matrix made of binders and additives. Understanding this concept is fundamental for upper-division undergraduate students interested in conservation science; therefore, this laboratory experiment aims to make students aware of this problem and leads them to develop a simple protocol combining two spectroscopic techniques, FT-IR and FT-Raman, and basic chemical treatments to overcome this difficulty. The case of the two quinacridone pigments, PR122 and PV19, is presented and discussed, although the same approach can be extended to other commercially available organic pigments.
Authors
I am an author on this paper
Click your name to claim this paper and add it to your profile.
Reviews
Recommended
No Data Available