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IP 500: Determination of the phosphorus content of residual fuels by ultra-violet spectrometry
- Method adopted/last revised: 2003
- Method reapproved: None
- REF/ISBN: IP500-2934869
- Status: Current
- First printed in STM books: January 2003
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Scope
This standard specifies a method for the determination of the phosphorus content of residual fuel oils by ashing, fusion and reaction to form molybdenum blue, the intensity of which is measured by ultra-violet spectrometry. It is applicable to phosphorus contents in the range 0,2 mg/kg to 40 mg/kg, and in combination with other analyses, may give an indication of the presence of ash-containing lubricating oil in the fuel.
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