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Scope

1.1 This test method covers the determination of copper in jet fuels in the range of 5 to 100 μg/kg using graphite furnace atomic absorption spectrometry. Copper contents above 100 μg/kg may be determined by sample dilution with kerosine to bring the copper level into the aforementioned method range. When sample dilution is used, the precision statements do not apply.

1.2 The values stated in SI units are to be regarded as standard.

1.3 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.

Significance and Use

At high temperatures aviation turbine fuels can oxidize and produce insoluble    deposits that are detrimental to aircraft propulsion systems. Very low copper    concentrations (in excess of 50 μg/kg) can significantly accelerate this thermal instability of aviation turbine fuel. Naval shipboard aviation fuel delivery systems    contain copper-nickel piping, which can increase copper levels in the fuel. This test    method may be used for quality checks of copper levels in aviation fuel samples    taken on shipboard, in refineries, and at fuel storage depots.

Keywords

absorbance units; atomic absorption spectrometer; aviation fuel; copper; graphite furnace; jet fuel; spectrometer; Atomic absorption spectrometry (AAS); Aviation fuels; Graphite furnace atomic absorption spectrometry (GFAAS); Jet turbine fuels; Spectrometry; ICS Number Code 71.040.50 (Physicochemical methods of analysis); 75.160.20 (Liquid fuels)

To find similar documents by ASTM Volume:

05.03 (Petroleum Products and Lubricants (III): D6138 - D6971)

To find similar documents by classification:

71.040.50 (Physicochemical methods of analysis Including spectrophotometric and chromatographic analysis)

75.160.20 (Liquid fuels Including gasoline, diesel, kerosene, etc.)

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