GSO ASTM D5185:2011
Gulf Standard
Historical
·
Approved on
12 April 2011
·
Standard Test Method for Determination of Additive Elements, Wear Metals, and Contaminants in Used Lubricating Oils and Determination of Selected Elements in Base Oils by Inductively Coupled Plasma Atomic Emission Spectrometry (ICP-AES)
GSO ASTM D5185:2011 Files
English
8 Pages
Historical
Reference Language
GSO ASTM D5185:2011 Scope
1.1 This test method covers the determination of additive
elements, wear metals, and contaminants in used lubricating
oils by inductively coupled plasma atomic emission spectrometry
(ICP-AES). The specific elements are listed in Table 1.
1.2 This test method covers the determination of selected
elements, listed in Table 1, in re-refined and virgin base oils.
1.3 For analysis of any element using wavelengths below
190 nm, a vacuum or inert-gas optical path is required. The
determination of sodium and potassium is not possible on some
instruments having a limited spectral range.
1.4 This test method uses oil-soluble metals for calibration
and does not purport to quantitatively determine insoluble
particulates. Analytical results are particle size dependent, and
low results are obtained for particles larger than a few
micrometers.2
1.5 Elements present at concentrations above the upper limit
of the calibration curves can be determined with additional,
appropriate dilutions and with no degradation of precision.
1.6 For elements other than calcium, sulfur, and zinc, the
low limits listed in Table 2 and Table 3 were estimated to be ten
times the repeatability standard deviation. For calcium, sulfur, and zinc, the low limits represent the lowest concentrations
tested in the interlaboratory study.
1.7 The values stated in SI units are to be regarded as
standard. No other units of measurement are included in this
standard.
1.8 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. Specific warning
statements are given in 6.1, 8.2, and 8.4.
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