1. A test to identify cyanide origin by isotope ratio mass spectrometry for forensic investigation 
Illa Tea, Ingrid Antheaume, Ben-Li Zhang 
Forensic Science International 
Volume 217, Issue 1, Pages (April 2012)
DOI: /j.forsciint
Copyright © 2011 Elsevier Ireland Ltd Terms and Conditions

2. Fig. 1
δ15N and δ13C values of different commercial samples of sodium cyanide and potassium cyanide. Error bars represent twice the SD of long-term repeatability at 95% confidence level. The numbers correspond to the batch no. of the samples, see Table 1. The circles indicate the samples coming from the same supplier and having close isotope data.
Forensic Science International  , DOI: ( /j.forsciint )
Copyright © 2011 Elsevier Ireland Ltd Terms and Conditions