Standard Guide for Sampling Oil/Water Mixtures for Oil Spill Recovery Equipment

SIGNIFICANCE AND USE
3.1 This guide provides techniques for obtaining representative samples of oil and water mixtures. This information is necessary in the calculation of oil recovery efficiency and oil recovery rates for oil collection devices.  
3.2 Sampling Stationary Mixtures—When recovered oil/water mixtures are contained within a holding tank and the relative oil content of the recovered fluid is needed, the sampling technique is somewhat dependent on the container. Two techniques are outlined in this guide. If the container has a flat bottom with straight sides perpendicular to the base (or nearly so), either stationary technique can be implemented, with the stratified sampling method preferred. If the container is irregular in either the horizontal or vertical cross section, the mixing method is preferred.  
3.3 Sampling Flowing Mixtures—To sample flowing mixtures containing both oil and water, turbulence is induced, to create a homogenous mixture while sampling. The oil content in the sample taken from the flowing stream can then be used to quantify the performance-rating criterion (see Procedure Section of Test Method D1796).
SCOPE
1.1 This guide is intended for sampling flowing or stationary oil/water mixtures. It is intended for use with oil spill recovery devices either in testing or in documentation of field performance.  
1.2 The values stated in SI units are to be regarded as standard. No other units of measurement are included in this standard.  
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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ASTM F1084-08(2013) - Standard Guide for Sampling Oil/Water Mixtures for Oil Spill Recovery Equipment
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NOTICE: This standard has either been superseded and replaced by a new version or withdrawn.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:F1084 −08 (Reapproved 2013)
Standard Guide for
Sampling Oil/Water Mixtures for Oil Spill Recovery
Equipment
This standard is issued under the fixed designation F1084; 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 Two techniques are outlined in this guide. If the container has
a flat bottom with straight sides perpendicular to the base (or
1.1 This guide is intended for sampling flowing or station-
nearly so), either stationary technique can be implemented,
ary oil/water mixtures. It is intended for use with oil spill
with the stratified sampling method preferred. If the container
recovery devices either in testing or in documentation of field
is irregular in either the horizontal or vertical cross section, the
performance.
mixing method is preferred.
1.2 The values stated in SI units are to be regarded as
3.3 Sampling Flowing Mixtures—To sample flowing mix-
standard. No other units of measurement are included in this
tures containing both oil and water, turbulence is induced, to
standard.
create a homogenous mixture while sampling. The oil content
1.3 This standard does not purport to address all of the
in the sample taken from the flowing stream can then be used
safety concerns, if any, associated with its use. It is the
to quantify the performance-rating criterion (see Procedure
responsibility of the user of this standard to establish appro-
Section of Test Method D1796).
priate safety and health practices and determine the applica-
bility of regulatory limitations prior to use.
4. Number of Samples
2. Referenced Documents 4.1 Take a minimum of four samples under each set of
2 conditions to average results and store the samples separately.
2.1 ASTM Standards:
In less ideal sampling conditions, take additional samples.
D1796 Test Method for Water and Sediment in Fuel Oils by
the Centrifuge Method (Laboratory Procedure)
5. Containers
D4007 Test Method for Water and Sediment in Crude Oil by
5.1 A dry, water-washed glass sample container.
the Centrifuge Method (Laboratory Procedure)
F625 Practice for Classifying Water Bodies for Spill Control
6. Labeling
Systems
6.1 Mark the sample container with the source, type of oil,
3. Significance and Use
date and time of sampling, the name of the person taking the
3.1 This guide provides techniques for obtaining represen-
sample, and a sample number. Require water and oil-resistant
tative samples of oil and water mixtures. This information is
labeling. If several receiving containers are to be sampled, they
necessary in the calculation of oil recovery efficiency and oil
must be identified and the samples marked for later coordina-
recovery rates for oil collection devices.
tion.
3.2 Sampling Stationary Mixtures—When recovered oil/
7. Preservation and Storage
water mixtures are contained within a holding tank and the
relative oil content of the recovered fluid is needed, the
7.1 The samples do not require special treatment to preserve
sampling technique is somewhat dependent on the container.
their integrity other than ensuring that they remain sealed until
analyzed. Note date and time of analysis for each sample.
This guide is under the jurisdiction of ASTM Committee F20 on Hazardous
8. Procedure
Substances and Oil Spill Response and is the direct responsibility of Subcommittee
F20.12 on Removal.
8.1 Baseline Data—The test fluids may be crude, refined, or
Current edition approved July 1, 2013. Published October 2013. Originally
synthetic oils. Record type, specific gravity, viscosity, and
approved in 1987. Last previous edition approved in 2008 as F1084 – 08. DOI:
10.1520/F1084-08R13.
temperature of each oil together with the environmental
For referenced ASTM standards, visit the ASTM website, www.astm.org, or
conditions (see Practice F625), air temperature, and slick
contact ASTM Customer Service at service@astm.org. For Annual Book of ASTM
thickness beyond the influence of the recovery equipment for
Standards volume information, refer to the standard’s Document Summary page on
the ASTM website. each test point.
Copyright © ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959. United States
F1084−08 (2013)
8.2 Sampling from a Container—This procedure is intended
for taking a representative sample of collected fluids held in a
container. When sampling containers, it is advisable to remove
as much of the aqueous phase as possible prior to sampling. If
this is possible, measure and record the volume of water
removed, which will contain dissolved hydrocarbons, for later
calculation of the relative oil/water composition. The precision
of the measurement will improve with removal of the aqueous
phase.
8.2.1 Mixing Method:
8.2.1.1 Mix the container of stratified oil and water using
any method which will achieve homogeneity during sampling
(high-speed propeller, liquid jet, or homogenizing pump).
Operate the mixer for a minimum of 5 min. Longer mixing
times are preferable to ensure homogeneity.
NOTE 1—Although this mixing method has been geared toward electric
mixers, alternate mixing methods could be used (air or liquid mixing jets,
homogenizing pumps), so long as a homogeneous mixture of the entire
volume is created. Immediately after mixing, obtain a representative
sample of the homogeneous mixture by lowering a 250 to 500-mL
small-mouthedbottle(fromwhichthecaphasbeenremoved)ataconstant
slow rate from the surface of the mixture to the bottom of the tank.
Immediately remove the bottle by slowly raising it through the mixture. If
necessary, repeat the process to ensure that at least 50 mL of sample will
be available for laboratory analysis. Do not fill the bottle to the top.
8.2.1.2 Limitations—The size of the sampled fluid container
is limited by the mixing capability available for thoroughly
homogenizingtheoilandwater.Mixtureswheretherelativeoil
NOTE 1—Align holes on slots in inner and outer sleeve to let sample
content is less than 20 % probably will not form a stable into zones of the sampler. When sampler is closed, holes are covered and
sampler is secured.
emulsion for sampling; making this method inappropriate for
FIG. 1Stratified Sampler with Construction Detail
...

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