Document Center is acquired by Nimonik

Scope

1.1 This practice covers the procedure for removing small quantities of ignitable liquid residue from samples of fire debris using solvent to extract the residue.

1.2 This practice is suitable for successfully extracting ignitable liquid residues over the entire range of concentrations.

1.3 Alternate separation and concentration procedures are listed in the referenced documents (Practices E1388, E1412, E1413, and E2154).

1.4 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. For a specific hazard statement, see Note 1.

Significance and Use

This practice is useful for preparing extracts from fire debris for later analysis by gas chromatography-mass spectrometry (GC/MS).

This is a very sensitive separation procedure, capable of isolating quantities smaller than 1 μL of ignitable liquid residue from a sample.

This practice is particularly useful when the potential for fractionation during separation must be reduced, as when attempting to distinguish between various grades of fuel oil.

This practice is particularly useful for the extraction of nonporous surfaces such as glass, or the interior of burned containers. It is also particularly well suited to the extraction of materials from very small samples.

This practice can be hampered by coincident extraction of interfering compounds present in the fire debris samples.

This practice may not be useful for the extraction of some extremely volatile ignitable liquids, which may evaporate during the concentration step.

This is a destructive technique. Whenever possible, this technique should only be used when a representative portion of the sample can be reserved for reanalysis. Those portions of the sample subjected to this procedure may not be suitable for resampling. If destruction of the sample is an issue, consider using passive headspace concentration as described in Practice E1412.

Keywords

fire debris samples; solvent extraction; Combustible (fire) residue; Fire debris samples; Forensic investigation/analysis; Gas chromatography (GC)--forensic sciences; Hydrocarbons; Liquid residues; Oily liquid extract; Residue--fires; Solvent extraction; Water-insoluble hydrocarbons; ICS Number Code 71.040.40 (Chemical analysis)

To find similar documents by ASTM Volume:

14.02 (General Test Methods; Forensic Psychophysiology; Forensic Sciences; Terminology; Conformity Assessment; Statistical Methods; Nanotechnology; Forensic Engineering; Manufacture of Pharmaceutical Products)

To find similar documents by classification:

71.040.40 (Chemical analysis Including analysis of gases and surface chemical analysis)

This document comes with our free Notification Service, good for the life of the document.

This document is available in either Paper or PDF format.