Demedts P, Van den Heede M, Van der Verren J, Heyndrickx A
J Anal Toxicol. 1982 Jan-Feb;6(1):30-3. doi: 10.1093/jat/6.1.30.
Capillary GC is applied to the toxicological analysis of illicit heroin samples. The combined use of a permanently deactivated fused silica capillary column, and a nitrogen-phosphorus detector (NPD), allows the separation and determination of nanogram amounts of underivatised opiates, using a direct injection technique.