Volume 23, Issue 2 (April 1978)
Enhanced Discrimination of Glass Samples by Phosphorescence Analysis
Of the various types of physical evidence available to crime scene investigators, glass fragments are among those frequently encountered [1,2]. Forensic science examinations usually involve comparing known window glass samples with glass fragments recovered from the suspect's clothing . Most crime laboratories use refractive index or density measurements, or both, to compare glass samples. As a result of modern glass production techniques, however, glass formulations are more closely controlled from batch to batch. This results in greater uniformity and reduces the value of analytical techniques that rely on differences in refractive index and density . It is generally agreed, therefore, that supplementary analyses are needed.