Solving a hairy forensic problem

(American Chemical Society) For decades, forensic scientists have tested strands of hair to reveal drug use or poisoning. But in recent years, reports have questioned the technique -- in particular, its ability to distinguish between the intake of a substance and external contamination of the hair. Now, researchers have reported a new method that appears to do just that in the ACS journal Analytical Chemistry.

from EurekAlert! - Social and Behavioral Science https://ift.tt/2uvBmgk