ASTM_E_1386_-_15.pdf

Designation:E138615Standard Practice forSeparation of Ignitable Liquid Residues from Fire DebrisSamples by Solvent Extraction1This standard is issued under the fixed designation E1386;the number immediately following the designation indicates the year oforiginal adoption or,in the case of revision,the year of last revision.A number in parentheses indicates the year of last reapproval.Asuperscript epsilon()indicates an editorial change since the last revision or reapproval.1.Scope1.1 This practice covers the procedure for removing smallquantities of ignitable liquid residue from samples of fire debrisusing solvent to extract the residue.1.2 This practice is suitable for successfully extractingignitable liquid residues over a wide range of concentrations.1.3 Alternate separation and concentration procedures arelisted in the referenced documents(Practices E1388,E1412,E1413,and E2154).1.4 This practice offers a set of instructions for performingone or more specific operations.This standard cannot replaceknowledge,skill,or ability acquired through appropriateeducation,training,and experience and should be used inconjunction with sound professional judgment.1.5 The values stated in SI units are to be regarded asstandard.No other units of measurement are included in thisstandard.1.6 This standard does not purport to address all of thesafety concerns,if any,associated with its use.It is theresponsibility of the user of this standard to establish appro-priate safety and health practices and determine the applica-bility of regulatory limitations prior to use.For a specifichazard statement,see 5.5.2.Referenced Documents2.1 ASTM Standards:2E1388 Practice for Sampling of Headspace Vapors from FireDebris SamplesE1412 Practice for Separation of Ignitable Liquid Residuesfrom Fire Debris Samples by Passive Headspace Concen-tration With Activated CharcoalE1413 Practice for Separation of Ignitable Liquid Residuesfrom Fire Debris Samples by Dynamic Headspace Con-centrationE1459 Guide for Physical Evidence Labeling and RelatedDocumentationE1492 Practice for Receiving,Documenting,Storing,andRetrieving Evidence in a Forensic Science LaboratoryE1618 Test Method for Ignitable Liquid Residues in Extractsfrom Fire Debris Samples by Gas Chromatography-MassSpectrometryE2154 Practice for Separation and Concentration of Ignit-able Liquid Residues from Fire Debris Samples by Pas-sive Headspace Concentration with Solid Phase Microex-traction(SPME)E2451 Practice for Preserving Ignitable Liquids and Ignit-able Liquid Residue Extracts from Fire Debris Samples3.Summary of Practice3.1 A sample of fire debris is extracted with an organicsolvent.The extract is filtered and concentrated as necessary.4.Significance and Use4.1 This practice is useful for preparing extracts from firedebris for later analysis by gas chromatography-mass spec-trometry(GC/MS).4.2 This is a very sensitive separation procedure,capable ofisolating quantities smaller than 1 Lof ignitable liquid residuefrom a sample.4.3 This practice is particularly useful when the potential forfractionation during separation must be reduced,as whenattempting to distinguish between various grades of fuel oil.4.4 This practice is particularly useful for the extraction ofnonporous surfaces such as glass,or the interior of burnedcontainers.It is also particularly well suited to the extraction ofignitable liquid residues from very small samples,very largesamples,or samples that are not suitable for heating.4.5 This practice is not specific to ignitable liquids and canbe hampered by coincident extraction of interfering com-pounds present in the fire debris samples.4.6 This practice may not be useful for the extraction ofsome extremely volatile ignitable liquids,which may evaporateduring the concentration step.1This practice is under the jurisdiction of ASTM Committee E30 on ForensicSciences and is the direct responsibility of E30.01 on CriminalisticsCurrent edition approved May 1,2015.Published June 2015.Originallyapproved in 1990.Last previous edition approved in 2010 as E1386 10.DOI:10.1520/E1386-15.2For referenced ASTM standards,visit the ASTM website,www.astm.org,orcontact ASTM Customer Service at serviceastm.org.For Annual Book of ASTMStandards volume information,refer to the standards Document Summary page onthe ASTM website.Copyright ASTM International,100 Barr Harbor Drive,PO Box C700,West Conshohocken,PA 19428-2959.United States1 4.7 This is a destructive technique.Whenever possible,thistechnique should only be used when a representative portion ofthe sample can be preserved for reanalysis.Those portions ofthe sample subjected to this procedure may not be suitable forresampling.If destruction of the sample is an issue,considerusing passive headspace concentration as described in PracticeE1412.5.Reagents and Materials5.1 Purity of ReagentsReagent grade or better chemicalsshall be used in all tests.It is intended that all reagents conformto the specifications of the Committee on Analytical