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Fluorescent technique for macroscopic detection of electrical metallization.
Zeitschrift Fur Rechtsmedizin. Journal of Legal Medicine
|January 1, 1981
Summary
This study presents a new fluorescence method to detect trace metals on cloth, identifying common electrode materials like iron and copper. The technique uses 8-hydroxyquinoline and UV light for visualizing latent metallic traces.
Area of Science:
- Forensic Science
- Analytical Chemistry
- Materials Science
Background:
- Latent metallic traces on cloth can originate from electrical sources.
- Existing methods for detecting these traces may have limitations.
Purpose of the Study:
- To develop and evaluate a fluorescence-based method for detecting trace metals on cloth.
- To visualize in situ latent current marks or electrical metallic traces.
Main Methods:
- A 0.2% solution of 8-hydroxyquinoline in ethanol was used as a spray reagent.
- Observation of the treated cloth was performed under shortwave UV light.
Main Results:
- The method successfully identified metallization from common electrode materials including iron, copper, zinc, aluminum, nickel, chromium, and brass.
- Fluorescence visualization allowed for the detection of latent metallic traces.
Conclusions:
- The developed fluorescence method offers a viable approach for detecting trace metals on cloth.
- This technique provides advantages for identifying electrical metallic traces compared to existing methods.