Revised Standard from Last Update.

1. SCOPE

1.1 This method is intended for the determination of sodium and nickel at levels above 1 mg/kg and vanadium at levels above 10 mg/kg in crude oils and residual fuel oils by Atomic Absorption Spectrometry (AAS).

1.2 Difficulty may be experienced in sodium determination with some samples due to the particulate nature of the sodium compounds present in it. It is recommended that an ashing technique should be used for such samples.

WARNING - This standard does not purport to address all of the safety-problems associated with its use. It is the responsibility of the user of this specification to establish appropriate safety and health practices and determine the applicability of regulatory limitations prior to use.

2. REFERENCES

The following standard contain provisions which, through reference in this text, constitutes provisions of this standard. At the time of publication the edition indicated was valid. All standards are subject to revision, and parties to agreements based on the standard are encouraged to investigate the possibility of applying the most recent edition of the standard indicated below :

1070 : 1992 Reagent grade water - Specification (third revision)