Standard Practice for Solvent Extraction of Total Petroleum Hydrocarbons from Soils and Sediments Using Closed Vessel Microwave Heating

SIGNIFICANCE AND USE
Solvent extraction of soils and sediments can provide information on the availability of petroleum hydrocarbons to leaching, water quality changes, or other site conditions.
Rapid heating, in combination with temperatures in excess of the atmospheric boiling point of acetone/hexane, reduces sample preparation or extraction times.
Reduced amounts of solvents are required and solvent loss due to boiling and evaporation are eliminated by use of closed extraction vessels.
SCOPE
1.1 This practice covers the solvent extraction of total petroleum hydrocarbon (TPH) from soils and sediments, using closed vessel microwave heating, for subsequent determination by gravimetric or gas chromatographic techniques.  
1.2 This practice is recommended only for solid samples that can pass through a ten mesh screen (approximately 2-mm openings).  
1.3 The solvent extract obtained by this practice may be analyzed for total or specific nonvolatile and semivolatile petroleum hydrocarbons but may require sample clean-up procedures prior to specific compound analysis.  
1.4 This practice is limited to solvents that are recommended for use in microwave solvent extraction systems.  
1.5 The values stated in pounds per square inch (psi) are to be regarded as the standard. The SI units given in parentheses are for information only.  
1.6 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. Specific hazard statements are given in Section 8.

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Publication Date
14-Aug-2005
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ASTM D5765-05 - Standard Practice for Solvent Extraction of Total Petroleum Hydrocarbons from Soils and Sediments Using Closed Vessel Microwave Heating
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NOTICE: This standard has either been superseded and replaced by a new version or withdrawn.
Contact ASTM International (www.astm.org) for the latest information
Designation:D5765–05
Standard Practice for
Solvent Extraction of Total Petroleum Hydrocarbons from
Soils and Sediments Using Closed Vessel Microwave
1
Heating
This standard is issued under the fixed designation D5765; 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 D3694 Practices for Preparation of Sample Containers and
for Preservation of Organic Constituents
1.1 This practice covers the solvent extraction of total
D3856 Guide for Good Laboratory Practices in Laborato-
petroleum hydrocarbon (TPH) from soils and sediments, using
ries Engaged in Sampling and Analysis of Water
closedvesselmicrowaveheating,forsubsequentdetermination
D3974 Practices for Extraction of Trace Elements from
by gravimetric or gas chromatographic techniques.
Sediments
1.2 This practice is recommended only for solid samples
D3976 Practice for Preparation of Sediment Samples for
that can pass through a ten mesh screen (approximately 2-mm
Chemical Analysis
openings).
D5368 Test Methods for Gravimetric Determination of
1.3 The solvent extract obtained by this practice may be
Total Solvent Extractable Content (TSEC) of Solid Waste
analyzed for total or specific nonvolatile and semivolatile
Samples
petroleum hydrocarbons but may require sample clean-up
2.2 Federal Standard:
procedures prior to specific compound analysis.
Code of Federal Regulations, Title 21, Part 1030, and Title
1.4 This practice is limited to solvents that are recom-
3
47, Part 18
mended for use in microwave solvent extraction systems.
1.5 The values stated in pounds per square inch (psi) are to
3. Summary of Practice
be regarded as the standard. The SI units given in parentheses
3.1 The chemical portion of this practice involves solvent
are for information only.
extraction to dissociate petroleum hydrocarbons from the
1.6 This standard does not purport to address all of the
matrix.
safety concerns, if any, associated with its use. It is the
3.2 The sample is extracted with acetone/hexane in a sealed
responsibility of the user of this standard to establish appro-
microwave transparent vessel using microwave heating to an
priate safety and health practices and determine the applica-
internal temperature of 150°C.
bility of regulatory limitations prior to use. Specific hazard
3.3 This practice provides a sample suitable for analysis by
statements are given in Section 8.
gas chromatography or gravimetric measurements.
2. Referenced Documents
4. Significance and Use
2
2.1 ASTM Standards:
4.1 Solvent extraction of soils and sediments can provide
information on the availability of petroleum hydrocarbons to
1
This practice is under the jurisdiction of ASTM Committee D19 on Water and
leaching, water quality changes, or other site conditions.
is the direct responsibility of Subcommittee D19.07 on Sediments, Geomorphology,
4.2 Rapid heating, in combination with temperatures in
and Open-Channel Flow.
excess of the atmospheric boiling point of acetone/hexane,
Current edition approved Aug. 15, 2005. Published August 2005. Originally
approved in 1995. Last previous edition approved in 2001 as D5765 – 95 (2001).
reduces sample preparation or extraction times.
DOI: 10.1520/D5765-05.
2
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
Standards volume information, refer to the standard’s Document Summary page on
3
the ASTM website. Available from the U.S. Government Printing Office, Washington, DC.
Copyright © ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959, United States.
1

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D5765–05
TABLE 1 Extraction Heating Parameters
4.3 Reduced amounts of solvents are required and solvent
loss due to boiling and evaporation are eliminated by use of Microwave power 100 %
Vessels pressure 200 psi
closed extraction vessels.
Vessels temperature 150°C
Heating time at 150°C 15 min
5. Interferences
5.1 No interferences to the extraction of soils and sediments
tee onAnalytical Reagents of theAmerican Chemical Society,
using microwave heating have been observed.
4
where such specifications are available.
5.2 Precautions should be exercised to avoid those interfer-
7.2 Acetone, HPLC grade.
ences normally associated with the final determination of total
7.3 Hexane, HPLC grade.
petroleum hydrocarbons using gas chromatography or gravi-
7.4 Sodium Sulfate—Reagent grade, granular, anhydrous,
metric techniques.
prepared by heating at 400°C for a minimum of 4 h.
7.5 Ashless Filter Paper.
6. Apparatus
8. Hazards
...

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