ASTM D 6481 Standard Test Method for Determination of Phosphorus, Sulfur, Calcium, and Zinc in Lubrication Oils by Energy Dispersive X-Ray Fluorescence Spectroscopy
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ASTM D 6481 Document Information:
Title
Standard Test Method for Determination of Phosphorus, Sulfur, Calcium, and Zinc in Lubrication Oils by Energy Dispersive X-Ray Fluorescence Spectroscopy
ASTM International
Publication Date:
Nov 10, 1999
Scope:
This test method covers the quantitative determination of additive
elements in unused lubricating
oils, as shown in Table 1.
This test method is limited to the use of energy dispersive X-ray
fluorescence (EDXRF)
spectrometers employing an X-ray tube for excitation in conjunction
with the ability to separate
the signals of adjacent elements.
This test method uses interelement correction factors calculated from
empirical calibration data.
This test method is not suitable for the determination of magnesium
and copper at the
concentrations present in lubricating oils.
This test method excludes lubricating oils that contain chlorine or
barium as an additive element.
This test method can be used by persons who are not skilled in X-ray
spectrometry. It is intended
to be used as a routine test method for production control analysis.
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 to use.
Keywords:
- additive elements
- additives
- calcium
- energy dispersive
- lubricating oils
- phosphorus
- spectrometry
- sulfur
- X ray
- zinc
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