GSO ASTM D2622:2024
ASTM D2622:21
Gulf Standard
Current Edition
·
Approved on
25 April 2024
Standard Test Method for Sulfur in Petroleum Products by Wavelength Dispersive X-ray Fluorescence Spectrometry
GSO ASTM D2622:2024 Files
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GSO ASTM D2622:2024 Scope
1.1 This test method covers the determination of total sulfur
in petroleum and petroleum products that are single-phase and
either liquid at ambient conditions, liquefiable with moderate
heat, or soluble in hydrocarbon solvents. These materials can
include diesel fuel, jet fuel, kerosene, other distillate oil,
naphtha, residual oil, lubricating base oil, hydraulic oil, crude
oil, unleaded gasoline, gasoline-ethanol blends, and biodiesel.
1.2 The range of this test method is between the PLOQ
value (calculated by procedures consistent with Practice
D6259) of 3 mg/kg total sulfur and the highest-level sample in
the round robin, 4.6 % by weight total sulfur.
NOTE 1—Instrumentation covered by this test method can vary in
sensitivity. The applicability of the test method at sulfur concentrations
below 3 mg ⁄kg may be determined on an individual basis for WDXRF
instruments capable of measuring lower levels, but precision in this test
method does not apply.
1.2.1 The values of the limit of quantitation (LOQ) and
method precision for a specific laboratory’s instrument depends
on instrument source power (low or high power), sample type,
and the practices established by the laboratory to perform the
method.
1.3 Samples containing more than 4.6 % by mass sulfur
should be diluted to bring the sulfur concentration of the
diluted material within the scope of this test method. Samples
that are diluted can have higher errors than indicated in Section
15 than non-diluted samples.
1.4 Volatile samples (such as high vapor pressure gasolines
or light hydrocarbons) may not meet the stated precision
because of selective loss of light materials during the analysis.
1.5 A fundamental assumption in this test method is that the
standard and sample matrices are well matched, or that the
matrix differences are accounted for (see 13.2). Matrix mismatch can be caused by C/H ratio differences between samples
and standards or by the presence of other interfering heteroatoms or species (see Table 1).
1.6 The values stated in SI units are to be regarded as
standard. No other units of measurement are included in this
standard.
1.7 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, health, and environmental practices and determine the applicability of regulatory limitations prior to use.
1.8 This international standard was developed in accordance with internationally recognized principles on standardization established in the Decision on Principles for the
Development of International Standards, Guides and Recommendations issued by the World Trade Organization Technical
Barriers to Trade (TBT) Committee.
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