A Chemical Investigation of the 18 Day Creation of Lead Oil.

dc.contributor.advisorMuller, Laura J.
dc.contributor.authorStollar, Sarah.
dc.descriptionvii, 28 leaves : illustrations (some color)
dc.descriptionIncludes bibliography: leaves 26-28.
dc.description.abstractLead oil is a paint medium used by conservators to restore oil paintings authentically to their original brilliance. Lead oil is a combination of linseed oil and lead oxide. Upon heating the solution darkens in color and must sit for an 18-day incubation period until it becomes colorless. Once colorless the solution is ready to be used in art restoration. Little is known about the chemical changes that occur during the 18-day incubation period. Two lead oil solutions, 5% and 10%, were sampled daily for 18 days and prepared for analysis by GFAAS using an acid digestion. Other analyses included FT-IR, GC/MS, and UV-VIS. The FT-IR spectra showed a decrease in vinyl hydrogens of the linseed oil, presenting the initial indication of polymerization by oxidation of carbon-carbon double bonds. Although it was hypothesized that lead concentrations would remain constant over the 18-day incubation period, under the present conditions the results for both lead solutions show a decreasing trend in lead concentration, followed by a plateau in lead concentration ranging from 10-20 mg Pb/kg. Possible reasons for the decreasing trend are postulated.en
dc.description.sponsorshipFinancial support of this project was provided through the Mars Fellowship Program and the Wheaton Foundation Grant.
dc.description.tableofcontentsChapter 1. Introduction -- 1.1. Historic Figures of Oil Painting -- 1.1.1. Theophilus Presbyter -- 1.1.2. Cennino d'Andrea Cennini -- 1.1.3. Jan Van Eyck -- 1.2. Composition of Oil Paints -- 1.3. Oxidation Process -- 1.3.1. Oxidation reaction -- 1.3.2. Oxidation in combination with artistic vision -- 1.4. Medieval Manuscript Recipes for Lead Oils -- 1.5. Metal Salts -- 1.6. Metal Identification using GFAAS in Art Conservation -- 1.7. Intentions of Research -- Chapter 2. Methods -- 2.1. Lead Oil Recipe -- 2.2. Ultra Violet Visible Spectroscopy -- 2.3. Direct Sampling Methods -- 2.4. Acid Digestion of Plant Samples -- 2.5. Graphite Furnace Atomic Absorption -- Chapter 3. Results/Discussion -- 3.1. Previous Research -- 3.2. Ultraviolet Visible Spectroscopy -- 3.3. Direct Sampling Methods -- 3.4. Acid Digestion Methods -- 3.5. GFAAS of Acid Digested Samples -- 3.6. Lead Leaching -- 3.7. Interference of H2O2 -- 3.8. Future Research -- 3.8.1. FT-IR and GC/MS -- 3.8.2. Preparations -- 3.8.3. Saturated Lead Oil -- 3.8.4. Digestion Methods.
dc.identifierW Thesis 1276
dc.publisherWheaton College ; Norton, Mass.
dc.subjectArt conservation.en
dc.subjectOil paintings.en
dc.subjectPaint -- Analysis.
dc.subjectPaint materials -- Analysis.
dc.subjectFurnace atomic absorption spectroscopy.
dc.subjectUndergraduate research.
dc.subjectUndergraduate thesis.
dc.subjectCollege publications.
dc.titleA Chemical Investigation of the 18 Day Creation of Lead Oil.en
dc.title.alternativeChemical investigation of the eighteen day creation of lead oil
Original bundle
Now showing 1 - 2 of 2
No Thumbnail Available
Final-Thesis Proposal.pdf
1.26 MB
Adobe Portable Document Format
Main article
No Thumbnail Available
roman numeral thesis.pdf
28.87 KB
Adobe Portable Document Format
Title page, table of contents, abstract, acknowledgement
License bundle
Now showing 1 - 1 of 1
No Thumbnail Available
1.7 KB
Plain Text