ASTM E1413-07

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Designation: E1413 − 07
StandardPractice for
Separation and Concentration of Ignitable Liquid Residues
from Fire Debris Samples by Dynamic Headspace
1
Concentration
This standard is issued under the fixed designation E1413; 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 E1412 Practice for Separation of Ignitable Liquid Residues
from Fire Debris Samples by Passive Headspace Concen-
1.1 This practice describes the procedure for separation of
tration With Activated Charcoal
small quantities of ignitable liquid residues from fire debris
samples using the absorption/elution method of headspace
3. Summary of Practice
concentration.
3.1 The sample, preferably in its original container, is
1.2 Both positive and negative pressure systems are de-
heated, forcing volatile compounds to vaporize. At the same
scribed.
time, the headspace in the sample is drawn or pushed through
a tube containing activated charcoal which adsorbs the vapor-
1.3 While this practice is suitable for successfully extracting
ized compounds.
ignitable liquid residues over the entire range of concentration,
theheadspaceconcentrationmethodsarebestusedwhenahigh
4. Significance and Use
level of sensitivity is required due to a very low concentration
4.1 This practice is useful for preparing extracts from fire
of ignitable liquid residues in the sample.
debris for later analysis by gas chromatography, GC/MS, or
1.4 Alternate separation and concentration procedures are
GC/IR.
listed in Section 2.
4.2 This is a very sensitive separation procedure, capable of
1.5 This standard does not purport to address all of the
isolating quantities smaller than 0.1 µL of ignitable liquid
safety concerns, if any, associated with its use. It is the
residue from a sample.
responsibility of the user of this standard to establish appro-
4.2.1 Actual recovery will vary, depending on several
priate safety and health practices and determine the applica-
factors, including adsorption temperature, container size, and
bility of regulatory limitations prior to use.
competition from the sample matrix.
2. Referenced Documents
4.3 “This is a potentially destructive technique.” Portions of
2
the sample subjected to this procedure may not be suitable for
2.1 ASTM Standards:
re-sampling. Therefore, a portion of the sample extract should
D1193 Specification for Reagent Water
be saved for potential future analysis. Consider using passive
E752 Practice for Safety and Health Requirements Relating
headspace concentration as described in Practice E1412.
to Occupational Exposure to Carbon Disulfide (With-
3
drawn 1995)
5. Apparatus
E1387 TestMethodforIgnitableLiquidResiduesinExtracts
5.1 Positive Pressure Apparatus:
from Fire Debris Samples by Gas Chromatography (With-
3
5.1.1 Sample Pressurization Device—A system capable of
drawn 2010)
delivering pressurized dry nitrogen (or other inert gas) at up to
40 psi (276 kPa) to an orifice to be inserted into the bottom of
1 the sample container.
This practice is under the jurisdiction of ASTM Committee E30 on Forensic
Sciences and is the direct responsibility of Subcommittee E30.01 on Criminalistics.
5.1.1.1 A needle valve capable of fine control of the flow
Current edition approved April 15, 2007. Published June 2007. Originally
rate of the dry nitrogen, at up to 1500 cc/min.
approved in 1991. Last previous edition approved in 2006 as E1413 – 06. DOI:
5.1.1.2 A flow meter capable of measuring the flow of dry
10.1520/E1413-07.
2
nitrogen through the end of the charcoal adsorption tube at the
For referenced ASTM standards, visit the ASTM website, www.astm.org, or
contact ASTM Customer Service at service@astm.org. For Annual Book of ASTM
rate of 0 to 1500 cc/min.
Standards volume information, refer to the standard’s Document Summary page on
5.1.1.3 Container Closure—Adevicesuitableforsealingthe
the ASTM website.
3
container and directing the effluent nitrogen and vapors to the
The last approved version of this historical standard is referenced on
www.astm.org. charcoal tube.
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E1413 − 07
5.2 Negative Pressure Apparatus: 6.4.1 Read and follow the safety precautions described in
5.2.1 Inlet and outlet system—A tube containing 1 cm of Practice E752.
charcoal is fitted into the lid of the original container with a
sleeve stopper. This serves as a filter for incoming room air. A 7. Sample Preparation
vacuum is pulled on an adsorption tube also fitted into the lid
7.1 Observe th
...