ASTM D3325-90(1996)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, D 3414, and D 5037. 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. For a specific hazard statement, see Note 3.
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Designation: D 3325 – 90 (Reapproved 1996)
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—Keywords were added editorially in December 1996.
1. Scope * leum Oils by Fluorescence Analysis
D 4489 Practices for Sampling Waterborne Oils
1.1 This practice covers the preservation of waterborne oil
D 5037 Test Method for Comparison of Waterborne Petro-
samples from the time of collection to the time of analysis.
leum Oils by High Performance Liquid Chromatography
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
D 3414, and D 5037. A guide to the use of ASTM test methods for the
water on collecting devices such as silanized glass cloth,
analysis of 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. For a specific
hazard statement, see Note 3. 5. Apparatus
5.1 Sample Containers—Borosilicate glass containers that
2. Referenced Documents
have been thoroughly cleaned are preferable. All glass contain-
2.1 ASTM Standards:
ers, new or used, must be thoroughly cleaned and washed prior
D 1129 Terminology Relating to Water
to use. The cleaning steps consist of an initial wash with a
D 3326 Practices for Preparation of Samples for Identifica-
warm aqueous detergent mixture followed by six hot tap water
tion of Waterborne Oils
rinses, two rinses with reagent water, a rinse with reagent-
D 3327 Test Methods for Analysis of Selected Elements in
grade acetone, and a final rinse with a solvent such as pentane,
Waterborne Oils
hexane, cyclohexane, dichloromethane, or chloroform fol-
D 3328 Test Methods for Comparison of Waterborne Petro-
lowed by drying in a clean oven at 105°C or hotter for 30 min.
leum Oils by Gas Chromatography
If the glassware requires cleaning under field conditions, it
D 3414 Test Method for Comparison of Waterborne Petro-
should be washed with warm aqueous detergent followed by
leum Oils by Infrared Spectroscopy
extensive water rinsing. A solvent rinse with acetone should be
D 3415 Practice for Identification of Waterborne Oils
made, if possible, followed by lengthy air drying to remove
D 3650 Test Method for Comparison of Waterborne Petro-
residual solvent.
NOTE 2—Hot reagent water rinses are advisable where hot tap water
might reintroduce contamination.
This practice is under the jurisdiction of ASTM Committee D19 on Water and
is the direct responsibility of Subcommittee D19.06 on Methods for Analysis for
NOTE 3—Caution: For safety reasons, the use of pentane, hexane, or
Organic Substances in Water.
cylcohexane is recommended over use of dichloromethane or carbon
Current edition approved May 25, 1990. Published February 1991. Originally
tetrachloride.
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published as D 3325 – 74 T. Last previous edition D 3325 – 85 .
Annual Book of ASTM Standards, Vol 11.01. 5.1.1 Plastic containers are not acceptable since volatile
Annual Book of ASTM Standards, Vol 11.02.
hydrocarbons diffuse readily through many commercial plastic
Discontinued; see 1993 Annual Book of ASTM Standards, Vol 11.02.
*A Summary of Changes section appears at the end of this standard.
Copyright © ASTM, 100 Barr Harbor Drive, West Conshohocken, PA 19428-2959, United States.
D 3325
containers or may be absorbed into the plastic. In addition, the 7. Sampling
plasticizer may dissolve in the sample causing misleading
7.1 Collect a representative sample in accordance with
results.
Practices D 4489.
5.1.2 Metal containers usually should be avoided because
7.2 Sample containers should be carefully prepared as
the nickel and vanadium determinations could be invalidated
described in 5.1.
by introduction of metal from the can.
5.1.3 When field expedients must be employed, an empty 8. Preservation of Samples
container of each type used should be included in the shipment
8.1 Protection Against Autoxidation—Treat the sample con-
to the laboratory to be used as a blank to measure inadvertent
tainer to displace air and store in a dark area in a refrigerator.
contamination.
Nitrogen or carbon dioxide can be used as inert gases to
5.2 Closures—Proper choice of closures is critical to avoid
displace air.
contamination and to preserve sample. Use caps with
8.2 Protection Against Microbial Attack—Maintain refrig-
aluminum-coated or TFE-fluorocarbon-coated cardboard in-
eration (4 to 5°C) once samples are received in the laboratory.
serts. Aluminum foil sheet should not be used. Inserts of
TFE-fluorocarbon sheet, however, are acceptable. 9. Shipment of Samples
5.3 Refrigerator, explosion-proof at about 4 to 5°C.
9.1 The shipping of oil samples is regulated by both
5.4 Shipping Containers—Sturdy
...
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