Standard Test Method for Sulfur in Petroleum Products by Hydrogenolysis and Rateometric Colorimetry

SCOPE
1.1 This test method covers the determination of sulfur in petroleum products in the range from 0.02 to 10.00 mg/kg.  
1.2 The method may be extended to higher concentration by dilution.  
1.3 The method is applicable to liquids whose boiling points are between 30 to 371°C (86 and 700°F). Materials that can be analyzed include naphtha, kerosine, alcohol, steam condensate, various distillates, jet fuel, benzene, and toluene.  
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.

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Publication Date
09-Jan-1999
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ASTM D4045-99 - Standard Test Method for Sulfur in Petroleum Products by Hydrogenolysis and Rateometric Colorimetry
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NOTICE: This standard has either been superseded and replaced by a new version or withdrawn.
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An American National Standard
Designation: D 4045 – 99
Standard Test Method for
Sulfur in Petroleum Products by Hydrogenolysis and
1
Rateometric Colorimetry
This standard is issued under the fixed designation D 4045; 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.
1. Scope 4. Significance and Use
4.1 In many petroleum refining processes, low levels of
1.1 This test method covers the determination of sulfur in
petroleum products in the range from 0.02 to 10.00 mg/kg. sulfur in feed stocks may poison expensive catalysts. This test
1.2 The method may be extended to higher concentration by method can be used to monitor the amount of sulfur in such
dilution. petroleum fractions.
1.3 The method is applicable to liquids whose boiling points 4.2 This test method may also be used as a quality-control
are between 30 and 371°C (86 and 700°F). Materials that can tool for sulfur determination in finished products.
be analyzed include naphtha, kerosine, alcohol, steam conden-
,
4 5
5. Apparatus
sate, various distillates, jet fuel, benzene, and toluene.
1.4 The values in acceptable SI units are to be regarded as 5.1 Pyrolysis Furnace—A furnace that can provide an
adjustable temperature from 900 to 1400°C in a 5-mm inside
the standard. The values in parentheses are for information
only. diameter or larger tube is required to pyrolyze the sample. The
furnace entry temperature shall allow insertion of the hypoder-
1.4.1 Certain specifications for the recorder (see 5.5) are
excepted. mic tip to a depth at which the temperature is 550°C to provide
sample vaporization at the injection syringe tip. This tempera-
1.5 This standard does not purport to address all of the
safety concerns, if any, associated with its use. It is the ture shall be above the boiling point of the sample and of the
sulfur compounds in the sample (see Fig. 1). The pyrolyzer
responsibility of the user of this standard to establish appro-
priate safety and health practices and determine the applica- tube may be of quartz; however, the lifetime is limited above
1250°C. Ceramic may be used at any temperature.
bility of regulatory limitations prior to use.
5.2 Rateometric H S Readout— Hydrogenolysis products
2
2. Referenced Documents
contain H S in proportion to sulfur in the sample. The H Sis
2 2
2.1 ASTM Standards: measured by measuring rate of change of reflectance caused by
2
D 1193 Specification for Reagent Water darkening when lead sulfide is formed. Rateometric electron-
D 6299 Practice for Applying Statisitical Quality Assurance ics, adapted to provide a first derivative output, allows suffi-
Techniques to Evaluate Analytical Measurement System cient sensitivity to measure below 0.1 mg/L (see Fig. 2).
3
Performance 5.3 Hypodermic Syringe—A hypodermic having a needle
long enough to reach the 550°C zone is required. A side port is
3. Summary of Test Method
convenient for vacuum filling and for flushing the syringe.
3.1 The sample is injected at a constant rate into a flowing
A100-μL syringe is satisfactory for injection rates down to 3
hydrogen stream in a hydrogenolysis apparatus. The sample μL/min and a 25-μL syringe for lower rates.
and hydrogen are pyrolyzed at a temperature of 1300°C, or
NOTE 1—Warning: Exercise caution as hypodermics can cause acci-
above, to convert sulfur compounds to hydrogen sulfide (H S).
2
dental injury.
Readout is by the rateometric detection of the colorimetric
5.4 Syringe Injection Drive—The drive shall provide uni-
reaction of H S with lead acetate. Condensable components are
2
form, continuous sample injections. Variation in drive injection
converted to gaseous products, such as methane, during hydro-
genolysis.
4
The apparatus described in 5.1-5.4 inclusive is similar in specification to the
1
This test method is under the jurisdiction of ASTM Committee D-2 on equipment available from Houston Atlas, Inc., 22001 North Park Dr., Kingswood,
Petroleum Products and Lubricants and is the direct responsibility of Subcommittee TX 77339-3804. For further information see Drushel, H. V., “Trace Sulfur
D02.03 on Elemental Analysis. Determination Petroleum Fractions,” Analytical Chemistry, Vol 50, 1978, p. 76.
5
Current edition approved Jan. 10, 1999. Published March 1999. Originally Houston Atlas, Inc. is the sole source of supply of the apparatus known to the
published as D 4045 – 87. Last previous edition D 4045 – 96. committee at this time. If you are aware of alternative suppliers, please provide this
2
Annual Book of ASTM Standards, Vol 11.01. information to ASTM Headquarters. Your comments will receive careful consider-
3 1
Annual
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