02388nam a2200277 4500 393927 393927 20160523d2012 y0pory50 ba eng Development and validation of a method for individualization of middle petroleum distillates and kerosene ignitable liquids Recurso eletrónico J. Graham Rankin, Peter Harrington [Rockville, MD] National Criminal Justice Reference Service (NCJRS) 2012 1 CD-ROM 12 cm Research report submitted to the U.S. Department of Justice (Award nr. NIJ 2008-DN-BX-K146). Ficheiro de 1,54 MB em formato PDF (109 p.). Resumo inserto na publicação. This project applied target compound analysis from high resolution Gas Chromatography/Mass Spectrometry (GCMS) utilized for gasoline individualization to Medium Petroleum Distillates (MPD) and kerosene which may be used as accelerants in arson cases. A major goal of this project was to establish analytical tools that provide a statistical evaluation for forensic comparison between ignitable liquid residues in fire debris and ignitable liquids in the possession of a suspect. Classifications based on two-way profile and target component ratios were compared. For kerosene, the Projected Difference Resolution (PDR) mapping technique was applied to measure the quantitative differences among the Ignitable Liquid (IL) samples by their GCMS profiles. Fuzzy Rule-building Expert Systems (FuRESs) were applied to classify individual ILs. The FuRES models yielded correct classification rates greater than 90% for discriminating between samples. PDR mapping, a new method for characterizing complex data sets was consistent with the FuRES classification result. For MPD, the Kendall’s-tau metric for ‘association/no-association’ was utilized to demonstrate ‘association/no-association’ true positive rates in excess of 95% with false positive rates ~5%. PRODUTO INFLAMÁVEL 343931 INCÊNDIO 243828 ANÁLISE DE VESTÍGIOS 320649 CIÊNCIA FORENSE 321508 QUÍMICA FORENSE 343048 RANKIN J. Graham 358109 HARRINGTON Peter 358110 Oferta 0 PJCD_258_000000000000000 2022-06-06 PJCD258 426465 PJ PJ PJ1CD258_20 PJCD258 2022-06-06 0 MO Oferta