The forensic analysis of office paper using carbon isotope ratio mass spectrometry— Part 2: Method development, validation and sample handling Kylie Jones, Sarah Benson, Claude Roux Forensic Science International Volume 231, Issue 1, Pages 364-374 (September 2013) DOI: 10.1016/j.forsciint.2013.05.009 Copyright © 2013 Terms and Conditions
Fig. 1 (a) Linear range for medium fiber cellulose – mean instrument response (mV). (b) Linear range for medium fiber cellulose – mean δ13CVPDB (‰). Forensic Science International 2013 231, 364-374DOI: (10.1016/j.forsciint.2013.05.009) Copyright © 2013 Terms and Conditions
Fig. 2 (a) Linear range for cellulose acetate – mean instrument response (mV). (b) Linear range for cellulose acetate – mean δ13CVPDB (‰). Forensic Science International 2013 231, 364-374DOI: (10.1016/j.forsciint.2013.05.009) Copyright © 2013 Terms and Conditions
Fig. 3 (a) Linear range for alpha glucose – mean instrument response (mV). (b) Linear range for alpha glucose – mean δ13CVPDB (‰). Forensic Science International 2013 231, 364-374DOI: (10.1016/j.forsciint.2013.05.009) Copyright © 2013 Terms and Conditions
Fig. 4 Linearity of CO+ production for paper, cellulose acetate and alpha glucose samples. Forensic Science International 2013 231, 364-374DOI: (10.1016/j.forsciint.2013.05.009) Copyright © 2013 Terms and Conditions
Fig. 5 Day 1 (diamond) vs. day 16 (square) δ13C values for samples left exposed to the laboratory atmosphere. Forensic Science International 2013 231, 364-374DOI: (10.1016/j.forsciint.2013.05.009) Copyright © 2013 Terms and Conditions
Fig. 6 Mean δ13CV-PDB (‰) paper sample values for storage/handling experiment. Forensic Science International 2013 231, 364-374DOI: (10.1016/j.forsciint.2013.05.009) Copyright © 2013 Terms and Conditions
Fig. 7 Plot of corrected measurements of international standard polyethylene over a 24-month period. Mean value and 95% confidence interval represented by the solid and dashed lines. Forensic Science International 2013 231, 364-374DOI: (10.1016/j.forsciint.2013.05.009) Copyright © 2013 Terms and Conditions
Fig. 8 Plot of corrected measurements of international standard sucrose over a 24-month period. Mean value and 95% confidence interval also represented by the solid and dashed lines. Forensic Science International 2013 231, 364-374DOI: (10.1016/j.forsciint.2013.05.009) Copyright © 2013 Terms and Conditions
Fig. 9 Plot of corrected measurements of international standard cellulose over a 24-month period. Mean value and 95% confidence interval also represented by the solid and dashed lines. Forensic Science International 2013 231, 364-374DOI: (10.1016/j.forsciint.2013.05.009) Copyright © 2013 Terms and Conditions
Fig. 10 Accuracy results for medium cellulose. Forensic Science International 2013 231, 364-374DOI: (10.1016/j.forsciint.2013.05.009) Copyright © 2013 Terms and Conditions
Fig. 11 Accuracy results for cellulose acetate. Forensic Science International 2013 231, 364-374DOI: (10.1016/j.forsciint.2013.05.009) Copyright © 2013 Terms and Conditions
Fig. 12 Accuracy results for alpha glucose. Forensic Science International 2013 231, 364-374DOI: (10.1016/j.forsciint.2013.05.009) Copyright © 2013 Terms and Conditions
Fig. 13 Mean δ13CVPDB (‰) values obtained for samples prepared and run by three different operators. Forensic Science International 2013 231, 364-374DOI: (10.1016/j.forsciint.2013.05.009) Copyright © 2013 Terms and Conditions