Photophysics of blood on a crime scene

Abstract: The purpose of this study is to analyze the possibility to age-determine blood spots with the help of enzymes which blood contains, in order to see if with these results it's possible to give an estimate of how long it has been since blood left the body. The main domain of this would be that of a crime-scene in order to give a time-frame of when a crime has been commited. The analysis consists of a serum that has been spiked with these enzymes gets to dry over time, and how the activity of these enzymes, which are dependent on the enzymes denaturation change. Problems which arose, such as drying of the blood, what blood contains, as well as a brief review of the possibility to conjugate quantum dots to the enzymes are also reviewed.