Difference between revisions of "Autofluorescence"
| Line 1: | Line 1: | ||
| − | [[File:00.321 BT front.jpg|thumb|Statue under normal | + | [[File:00.321 BT front.jpg|thumb|Statue under normal lighting conditions]] |
| − | |||
| − | lighting conditions]] | ||
== Description == | == Description == | ||
| − | + | [[File:00.321 BT front uv 1.jpg|thumb|Statue under ultraviolet light]] | |
The ability of a material to fluoresce without the addition of any fluorochromes. Some organic and inorganic materials autofluoresce by absorbing energy from incident radiation then reemitting the radiation at a longer wavelength. The intensity and wavelength distribution of the emission can change as a material ages. Some typical autofluorescent colors are: | The ability of a material to fluoresce without the addition of any fluorochromes. Some organic and inorganic materials autofluoresce by absorbing energy from incident radiation then reemitting the radiation at a longer wavelength. The intensity and wavelength distribution of the emission can change as a material ages. Some typical autofluorescent colors are: | ||
| Line 25: | Line 23: | ||
- [[Cellulose%20nitrate|Cellulose nitrate]]: purple | - [[Cellulose%20nitrate|Cellulose nitrate]]: purple | ||
| − | |||
| − | |||
== Synonyms and Related Terms == | == Synonyms and Related Terms == | ||
| Line 38: | Line 34: | ||
File:01.7723 BT front uv.jpg|Statue under ultraviolet light | File:01.7723 BT front uv.jpg|Statue under ultraviolet light | ||
</gallery> | </gallery> | ||
| − | |||
== Resources and Citations == | == Resources and Citations == | ||
Latest revision as of 13:38, 30 April 2022
Description
The ability of a material to fluoresce without the addition of any fluorochromes. Some organic and inorganic materials autofluoresce by absorbing energy from incident radiation then reemitting the radiation at a longer wavelength. The intensity and wavelength distribution of the emission can change as a material ages. Some typical autofluorescent colors are:
- Proteins or carbohydrates: bright white to pale yellow
- Linseed oil: green to yellow when fresh, intensity decreasing with age
- Dammar and Mastic: pale yellow to green, may be dark orange if oil is present
- Shellac: orange (varying shades depending on original color of shellac)
- Zinc white: whitish yellow
- Titanium dioxide or Lead white: deep purple
- Calcite: purple
- Indian yellow: bright yellow
- Polyethylene: whitish purple
- Cellulose nitrate: purple
Synonyms and Related Terms
primary fluorescence; autofluorescent
Additional Images
Statue under normal lighting conditions
Statue under ultraviolet light
Resources and Citations
- Richard C. Wolbers, Nanette T. Sterman, Chris Stavroudis, Notes for Workshop on New Methods in the Cleaning of Paintings, J.Paul Getty Trust, Los Angeles, 1990 Comment: Source for most fluorescent colors in list
- G.Osmond "Accelerated Deterioration of Artists Oil Paints: An Assessment Involving Ultraviolet Fluorescence Microscopy" ICOM Preprints Washington 1993 p.239-247