Abstract
Refractive index and metal ion concentrations (Al, Ba, Ca,
Fe, Mg, Mn, Sr, Ti and Zr) were determined for four
product-use categories: headlamp glass; container glass,
non-vehicle window float glass, and vehicle float glass.
Linear discriminant modelling using these data allowed
differentiation of the four glass types but further
discrimination was not possible within a product-use
category. For this specific set of glasses, the concentrations
of a number of metal ions were found to be correlated in
some cases. This precluded the use of traditional probability
calculations in using elemental composition data for
interpretation of glass evidence. Alternative approaches to
glass data interpretation are suggested.
Original language | English |
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Pages (from-to) | 93-100 |
Number of pages | 7 |
Journal | Science and Justice |
Volume | 38 |
Issue number | 2 |
DOIs | |
Publication status | Published - Apr 1998 |
Keywords
- forensic science
- glass analysis
- headlamp glass
- container glass
- float glass
- elemental composition
- refractive index
- linear discriminant modelling