Standard Test Method for Determination of Hydrogen Sulfide in Fuel Oils by Rapid Liquid Phase Extraction <a href="#fn00002"></a>
SIGNIFICANCE AND USE
Excessive levels of hydrogen sulfide in the vapor phase above residual fuel oils in storage tanks can result in health hazards, violation of local occupational health and safety regulations, and public complaint. An additional concern is corrosion that can be caused by the presence of H2S during refining or other activities. Control measures to maintain safe levels of H2S require a precise method for the measurement of potentially hazardous levels of H2S in fuel oils. (Warning—Safety. Hydrogen sulfide (H2S) is a very dangerous, toxic, explosive and flammable, colorless and transparent gas which can be found in crude oil and can be formed during the manufacture of the fuel at the refinery and can be released during handling, storage, and distribution. At very low concentrations, the gas has the characteristic smell of rotten eggs. However, at higher concentrations, it causes a loss of smell, headaches, and dizziness, and at very high concentrations, it causes instantaneous death. It is strongly recommended that personnel involved in the testing for hydrogen sulfide are aware of the hazards of vapor-phase H2S and have in place appropriate processes and procedures to manage the risk of exposure.)
This test method was developed so refiners, fuel terminal operators, and independent testing laboratory personnel can rapidly and precisely measure the amount of H2S in residual fuel oils and distillate blend stocks, with a minimum of training, in a wide range of locations.
Test Method D5705 provides a simple and consistent field test method for the rapid determination of H2S in the residual fuel oils vapor phase. However it does not necessarily simulate the vapor phase H2S concentration of a fuel storage tank nor does it provide any indication of the liquid phase H2S concentration.
Test Method D6021 does measure the H2S concentration of H2S in the liquid phase, however it requires a laboratory and a skilled operator to perform the complex procedure and calculations, and...
SCOPE
1.1 This test method covers a procedure for the determination of the hydrogen sulfide (H2S) content of fuel oils such as marine residual fuels and blend stocks, in the range 0.40 to 15.0 mg/kg as measured in the liquid phase.
1.2 This test method is applicable for materials with a viscosity up to 3000 mm2s-1 at 50°C.
Note 1—ASTM specification fuels falling within the scope of this test method are: Specification D396 Grade Nos 5 (light), 5 (heavy) and 6.
1.3 The values stated in SI units are to be regarded as standard. No other units of measurement are included in this standard.
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.
General Information
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Standards Content (Sample)
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: D7621 – 10
IP 570
Standard Test Method for
Determination of Hydrogen Sulfide in Fuel Oils by Rapid
,
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Liquid Phase Extraction
This standard is issued under the fixed designation D7621; 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 (ϵ) indicates an editorial change since the last revision or reapproval.
1. Scope Data for Use in Test Methods for Petroleum Products and
Lubricants
1.1 This test method covers a procedure for the determina-
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2.2 ASTM Adjuncts:
tion of the hydrogen sulfide (H S) content of fuel oils such as
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ADJ6300 D2PP Determination of Precision and Bias data
marine residual fuels and blend stocks, in the range 0.40 to
for Use in Test Methods for Petroleum Products
15.0 mg/kg as measured in the liquid phase.
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2.3 ISO Standards:
1.2 This test method is applicable for materials with a
2 -1
ISO TR 13739 Petroleum Products–Procedures for the
viscosity up to 3000 mm s at 50°C.
Transfer of Bunker Fuel(s) to Ships
NOTE 1—ASTM specification fuels falling within the scope of this test
ISO 4259 Petroleum Products–Determination and Applica-
method are: Specification D396 Grade Nos 5 (light), 5 (heavy) and 6.
tion of Precision Data in Relation to Methods of Test
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1.3 The values stated in SI units are to be regarded as
2.4 Energy Institute Standards:
standard. No other units of measurement are included in this
IP 399 Test Method for Determination of Hydrogen Sulfide
standard.
in Fuel Oils
1.4 This standard does not purport to address all of the
IP 570 Test Method for Determination of Hydrogen Sulfide
safety concerns, if any, associated with its use. It is the
in Fuel Oils–Rapid Liquid Phase Extraction Method
responsibility of the user of this standard to establish appro-
3. Terminology
priate safety and health practices and determine the applica-
bility of regulatory limitations prior to use.
3.1 Definitions:
3.1.1 residual fuel oil, n—fuel oil comprising a blend of
2. Referenced Documents
viscous long, short or cracked residue from a petroleum
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2.1 ASTM Standards:
refiningprocessandlighterdistillates(blendstocks)blendedto
D396 Specification for Fuel Oils
a fuel oil viscosity specification, burned for the generation of
D4057 Practice for Manual Sampling of Petroleum and
heat in a furnace or firebox or for the generation of power in an
Petroleum Products
engine.
D5705 Test Method for Measurement of Hydrogen Sulfide
3.2 Definitions of Terms Specific to This Standard:
in the Vapor Phase Above Residual Fuel Oils
3.2.1 liquid phase extraction, n—techniquetodeterminethe
D6021 Test Method for Measurement of Total Hydrogen
concentration of H S gas trapped in a liquid by continuous
2
Sulfide in Residual Fuels by Multiple Headspace Extrac-
analysis of gases extracted by bubbling air through the test
tion and Sulfur Specific Detection
specimen.
D6300 Practice for Determination of Precision and Bias
4. Summary of Test Method
4.1 Aweighed test specimen is introduced into a heated test
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This test method is under the jurisdiction of ASTM Committee D02 on
vessel containing a diluent base oil.Air is bubbled through the
Petroleum Products and Lubricants and is the direct responsibility of Subcommittee
oil to extract the H S gas. The H S is passed, with the air, over
D02.E0 on Burner, Diesel, Non-Aviation Gas Turbine, and Marine Fuels. 2 2
Current edition approved May 1, 2010. Published August 2010.
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This test method has been developed through the cooperative effort between
ASTM and the Energy Institute, London. The IP and ASTM logos imply that the
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ASTM and IPstandards are technically equivalent, but their use does not imply that For referenced ASTM adjuncts contact ASTM Customer Service at
both standards are editorially identical. service@astm.org.
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For referenced ASTM standards, visit the ASTM website, www.astm.org, or Available fromAmerican National Standards Institute (ANSI), 25 W. 43rd St.,
contact ASTM Customer Service at service@astm.org. For Annual Book of ASTM 4th Floor, New York, NY 10036, http://www.ansi.org.
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Standards volume information, refer to the standard’s Document Summary page on Available from Energy Institute, 61 New Cavendish St., London, WIG 7AR,
the ASTM website. U.K., http://www.energyinst.org.uk.
Copyright © ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959, United States.
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D7621 – 10
an H S specific electro-chemical detector to enable the H S 6.3 Syringe, 20 mL polypropylene disposable type, for
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content of the air to be measured and the amount in the liquid introduction of the diluent oil (see 7.1), accuracy 61%.
phase to be calculated in mg/kg. 6.4
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