ASTM D3325-90(2002)e1
(Practice)Standard Practice for Preservation of Waterborne Oil Samples
Standard Practice for Preservation of Waterborne Oil Samples
SCOPE
1.1 This practice covers the preservation of waterborne oil samples from the time of collection to the time of analysis. Information is provided to ensure sample integrity and to avoid contamination and to minimize microbial degradation.
1.2 The practice is for controlled field or laboratory conditions and specifies thorough preparation of equipment and precise operation. Where these details must be compromised in a field emergency, nonstandard simplifications are recommended that will minimize or eliminate consequent errors.
Note 1—Procedures for the analysis of oil spill samples are Practices D 3326, D 3415, D 3650, and D 4489, and Test Methods D 3327, D 3328, and D 3414 . A guide to the use of ASTM test methods for the analysis of oil spill samples is found in Practice D 3415.
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.
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Designation:D 3325–90(Reapproved 2002)
Standard Practice for
Preservation of Waterborne Oil Samples
This standard is issued under the fixed designation D 3325; 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 (e) indicates an editorial change since the last revision or reapproval.
e NOTE—Referenced Documents Section was editorially updated in June 2002.
1. Scope* D 3415 Practice for Identification of Waterborne Oils
D 3650 Test Method for Comparison of Waterborne Petro-
1.1 This practice covers the preservation of waterborne oil
leum Oils by Fluorescence Analysis
samples from the time of collection to the time of analysis.
D 4489 Practices for Sampling Waterborne Oils
Information is provided to ensure sample integrity and to avoid
contamination and to minimize microbial degradation.
3. Terminology
1.2 The practice is for controlled field or laboratory condi-
3.1 Definitions—For definitions of terms used in this prac-
tions and specifies thorough preparation of equipment and
tice, refer to Terminology D 1129.
precise operation.Where these details must be compromised in
a field emergency, nonstandard simplifications are recom-
4. Summary of Practice
mended that will minimize or eliminate consequent errors.
4.1 Special types of sample containers and shipping con-
NOTE 1—Procedures for the analysis of oil spill samples are Practices
tainers are recommended. Samples may be of several types: tar
D 3326, D 3415, D 3650, and D 4489, and Test Methods D 3327, D 3328,
balls, collected oil, oil-water mixtures, emulsions, and oil and
and D 3414 .Aguide to the use ofASTM test methods for the analysis of
water on collecting devices such as silanized glass cloth,
oil spill samples is found in Practice D 3415.
TFE-fluorocarbon polymer, or other materials. Instructions are
1.3 This standard does not purport to address all of the
given for the care of samples to minimize changes due to
safety concerns, if any, associated with its use. It is the
autoxidation and microbial attack between the time of sam-
responsibility of the user of this standard to establish appro-
pling and the time of analysis. Services available for transpor-
priate safety and health practices and determine the applica-
tation of samples are described.
bility of regulatory limitations prior to use.
5. Apparatus
2. Referenced Documents
5.1 Sample Containers—Borosilicate glass containers that
2.1 ASTM Standards:
have been thoroughly cleaned are preferable.All glass contain-
D 1129 Terminology Relating to Water
ers, new or used, must be thoroughly cleaned and washed prior
D 3326 Practices for Preparation of Samples for Identifica-
to use. The cleaning steps consist of an initial wash with a
tion of Waterborne Oils
warm aqueous detergent mixture followed by six hot tap water
D 3327 Test Methods for Analysis of Selected Elements in
rinses, two rinses with reagent water, a rinse with reagent-
Waterborne Oils
grade acetone, and a final rinse with a solvent such as pentane,
D 3328 Test Methods for Comparison of Waterborne Petro-
hexane, cyclohexane, dichloromethane, or chloroform fol-
leum Oils by Gas Chromatography
lowed by drying in a clean oven at 105°C or hotter for 30 min.
D 3414 Test Method for Comparison of Waterborne Petro-
If the glassware requires cleaning under field conditions, it
leum Oils by Infrared Spectroscopy
should be washed with warm aqueous detergent followed by
extensive water rinsing.Asolvent rinse with acetone should be
made, if possible, followed by lengthy air drying to remove
This practice is under the jurisdiction of ASTM Committee D19 on Water and
residual solvent. (Warning—For safety reasons, the use of
is the direct responsibility of Subcommittee D19.06 on Methods for Analysis for
Organic Substances in Water. pentane, hexane, or cylcohexane is recommended over use of
Current edition approved May 25, 1990. Published February 1991. Originally
dichloromethane or carbon tetrachloride. )
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published as D 3325 – 74 T. Last previous edition D 3325 – 90 (1996) .
Annual Book of ASTM Standards, Vol 11.01.
NOTE 2—Hot reagent water rinses are advisable where hot tap water
Annual Book of ASTM Standards, Vol 11.02.
might reintroduce contamination.
Discontinued; see 1993 Annual Book of ASTM Standards, Vol 11.02.
*ASummary of Changes section appears at the end of this standard.
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D 3325–90 (2002)
5.1.1 Plastic containers are not acceptable since volatile 7. Sampling
hydrocarbons diffuse readily through many commercial plastic
7.1 Collect a representative sample in accordance with
containers or may be absorbed into the plastic. In addition, the
Practices D 4489.
plasticizer may dissolve in the sample causing misleading
7.2 Sample containers should be carefully prepared as
results.
described in 5.1.
5.1.2 Metal containers usually should be avoided because
8. Preservation of Samples
the nickel and vanadium determinations could be invalidated
by introduction of metal from the can. 8.1 Protection Against Autoxidation—Treat the sample con-
5.1.3 When field expedients must be employed, an empty
tainer to displace air and store in a dark area in a refrigerator.
container of each type used should be included in the shipment Nitrogen or carbon dioxide can be used as inert gases to
to the laboratory to be used as a blank to measure inadvertent
displace air.
contamination. 8.2 Protection Against Microbial Attack—Maintain refrig-
5.2 Closures—Proper choice of closures is critical to avoid
eration (4 to 5°C) once samples are received in the laboratory.
contamination and to preserve sample. Use caps with
9. Shipment of Samples
aluminum-coated or TFE-fluorocarbon-coated cardboard in-
9.1 The shipping of oil samples is regulated by both
serts. Aluminum foil sheet should not be used. Inserts of
Department of Transportation (DOT) and United States Postal
TFE-fluorocarbon sheet, however, are acceptable.
Service regulations.
5.3 Refrigerator, explosion-proof at about 4 t
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