ASTM D1318-23 pdf free download,Standard Test Method For Sodium In Residual Fuel Oil (Flame Photometric Method).
1.1 This test method covers the determination of sodium in residual fuel oil by means of a flame photometer. Its precision in low ranges limits its application to samples containing more than 15 mg/kg sodium. Other elements commonly found in residual fuel oil do not interfere.
1.2 The values stated in SI units are to be regarded as standard. No other units of measurement are included in this standard.
10. Procedure
10.1 Preparation of Sample:
10.1.1 Weigh into a thoroughly clean, dry 100 mL platinum dish the appropriate size sample (8.3) with an accuracy of at least 1 part per 100 parts of sample (Note 2). Samples larger than 75 g require a second filling of the platinum dish; for such samples, obtain the sample weight from the difference between the initial and final weights of the sample bottle. Place the platinum dish containing the fuel oil on a silica triangle properly supported, and heat with a bunsen burner until the contents ignite and burn readily (Note 3). Continue heating with the burner in such a manner that the sample burns at a uniform and moderate rate and only ash and carbon remain after burning ceases. For samples larger than 75 g, cool the dish and fill it approximately two-thirds full with additional well-shaken sample, and burn as above.
ASTM D1318-23 pdf free download – Standard Test Method For Sodium In Residual Fuel Oil (Flame Photometric Method)
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