Astm D 5056 – 02 pdf free download

Standard Test Method for
Trace Metals in Petroleum Coke by Atomic Absorption1

This standard is issued under the fixed designation D 5056; the number immediately following the designation indicates the year of
original adoption or, in the case of revision, the year of the last revision. A number in parentheses indicates the year of the last reapproval. A
superscript epsilon (e) indicates an editorial change since the last revision or reapproval.

1. Scope *

1.1 This test method covers the analysis of the commonly
determined trace metals (aluminum, calcium, iron, nickel,
silicon, sodium, and vanadium) in laboratory analysis samples
of raw and calcined petroleum coke by atomic absorption
spectroscopy.

1.2 The elemental concentration ranges for which this test
a method is applicable and the limits of detection of this test
method are listed in Table 1.

1.3 The values stated in SI units are to be regarded as the
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. For hazard statements, see Sections 8-10.

2. Referenced Documents

2.1 ASTM Standards:
D 346 Practice for Collection and Preparation of Coke
Samples for Laboratory Analysis2
D 6299 Practice for Applying Statistical Quality Assurance
Techniques to Evaluate Analytical Measurement System
Performance3
D 1193 Specification for Reagent Water4

3. Summary of Test Method

3.1 A representative sample of the petroleum coke is ashed
at 525°C under specified conditions. The ash is fused with
lithium tetraborate (Li2B4O7), or lithium metaborate (LiBO3).
The melt is dissolved in dilute hydrochloric acid (HCl), and the
the resultant solution is analyzed by atomic absorption spectroscopy for the following elements: aluminum, calcium, iron,
nickel, silicon, sodium, and vanadium