ASTM E2451-08
(Practice)Standard Practice for Preserving Ignitable Liquids and Ignitable Liquid Residue Extracts from Fire Debris Samples
Standard Practice for Preserving Ignitable Liquids and Ignitable Liquid Residue Extracts from Fire Debris Samples
SIGNIFICANCE AND USE
The archiving of extracts recovered from fire debris or liquids submitted in a fire investigation provides a mechanism to preserve extracts and liquids for reanalysis in the event that sample loss, sample degradation, or failure of the fire debris container occurs during post-analysis storage of fire debris evidence.
The nature of some extraction procedures, which may preclude reanalysis, is considered.
Changes to a preserved sample extract and the length of time it remains viable under storage conditions are unknown.
The concentration and composition of the ignitable liquid residue or the use of an alternate extraction/concentration technique used to preserve a sample extract of the fire debris sample may result in different findings between the analysis of the preserved sample and the original analysis.
SCOPE
1.1 This practice describes procedures for preserving residues of ignitable liquids in extracts obtained from fire debris samples and questioned ignitable liquid samples. Extraction procedures are described in the Referenced Documents.
1.2 This practice does not attempt to address all the issues regarding the short-term or long-term storage of ignitable liquid samples and ignitable liquid extracts from fire debris samples. The changes that may occur under various storage conditions have not been fully documented.
1.3 This standard does not purport to address all of the safety concerns, if any, associated with its use. It is the responsibility of the user of this standard to establish appropriate safety and health practices and determine the applicability of regulatory limitations prior to use.
General Information
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Standards Content (Sample)
NOTICE: This standard has either been superseded and replaced by a new version or withdrawn.
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Designation: E2451 − 08
StandardPractice for
Preserving Ignitable Liquids and Ignitable Liquid Residue
Extracts from Fire Debris Samples
This standard is issued under the fixed designation E2451; the number immediately following the designation indicates the year of
original adoption or, in the case of revision, the year of last revision. A number in parentheses indicates the year of last reapproval. A
superscript epsilon (´) indicates an editorial change since the last revision or reapproval.
1. Scope E1492 Practice for Receiving, Documenting, Storing, and
Retrieving Evidence in a Forensic Science Laboratory
1.1 This practice describes procedures for preserving resi-
E1618 TestMethodforIgnitableLiquidResiduesinExtracts
dues of ignitable liquids in extracts obtained from fire debris
from Fire Debris Samples by Gas Chromatography-Mass
samples and questioned ignitable liquid samples. Extraction
Spectrometry
procedures are described in the Referenced Documents.
E2154 Practice for Separation and Concentration of Ignit-
1.2 This practice does not attempt to address all the issues
able Liquid Residues from Fire Debris Samples by Pas-
regarding the short-term or long-term storage of ignitable
sive Headspace Concentration with Solid Phase Microex-
liquid samples and ignitable liquid extracts from fire debris
traction (SPME)
samples. The changes that may occur under various storage
conditions have not been fully documented.
3. Summary of Practice
1.3 This standard does not purport to address all of the
3.1 Extracts obtained from fire debris samples and ques-
safety concerns, if any, associated with its use. It is the
tioned liquids analyzed for the presence of ignitable liquid
responsibility of the user of this standard to establish appro-
residues are retained and preserved for potential reanalysis by
priate safety and health practices and determine the applica-
Test Methods E1387 or E1618.
bility of regulatory limitations prior to use.
4. Significance and Use
2. Referenced Documents
4.1 The archiving of extracts recovered from fire debris or
2.1 ASTM Standards:
liquids submitted in a fire investigation provides a mechanism
E1386 Practice for Separation of Ignitable Liquid Residues
to preserve extracts and liquids for reanalysis in the event that
from Fire Debris Samples by Solvent Extraction
sample loss, sample degradation, or failure of the fire debris
E1387 TestMethodforIgnitableLiquidResiduesinExtracts
container occurs during post-analysis storage of fire debris
from Fire Debris Samples by Gas Chromatography (With-
evidence.
drawn 2010)
4.2 The nature of some extraction procedures, which may
E1388 Practice for Sampling of HeadspaceVapors from Fire
preclude reanalysis, is considered.
Debris Samples
E1412 Practice for Separation of Ignitable Liquid Residues
4.3 Changes to a preserved sample extract and the length of
from Fire Debris Samples by Passive Headspace Concen-
time it remains viable under storage conditions are unknown.
tration With Activated Charcoal
4.4 The concentration and composition of the ignitable
E1413 Practice for Separation and Concentration of Ignit-
liquid residue or the use of an alternate extraction/
able Liquid Residues from Fire Debris Samples by Dy-
concentration technique used to preserve a sample extract of
namic Headspace Concentration
the fire debris sample may result in different findings between
E1459 Guide for Physical Evidence Labeling and Related
the analysis of the preserved sample and the original analysis.
Documentation
5. Materials
This practice is under the jurisdiction of ASTM Committee E30 on Forensic
5.1 Airtight and Vapor-Tight, Volatile-Free Storage
Sciences and is the direct responsibility of Subcommittee E30.01 on Criminalistics.
Current edition approved March 1, 2008. Published April 2008. DOI: 10.1520/
Containers—The following are suggested container types:
E2451-08.
5.1.1 Septum crimp vials with PTFE-lined seals.
For referenced ASTM standards, visit the ASTM website, www.astm.org, or
5.1.2 Screw cap glass vials with PTFE-lined seals.
contact ASTM Customer Service at service@astm.org. For Annual Book of ASTM
Standards volume information, refer to the standard’s Document Summary page on 5.1.3 Polymer evidence bags (this does not include polyeth-
the ASTM website.
ylene or polypropylene-type containers).
The last approved version of this historical standard is referenced on
www.astm.org. 5.2 Adsorption Media:
Copyright © ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959. United States
E2451 − 08
5.2.1 Activated charcoal (coconut). 6.4.2 Alternatively,adsorbaportionoftheliquid,extract,or
5.2.2 Activated charcoal strips. recovered distillate on an adsorption medium and store in an
appropriate container for preservation.
6. Procedure
6.5
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