Direct measurement of metallic impurities in petroleum fuels using the Agilent 4100 MP-AES

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Application Note

  • Published: May 17, 2012
  • Author: Agilent Technologies
  • Copyright: Agilent Technologies
  • Suppliers: Agilent Technologies
  • Products: Atomic / Atomic Emission
  • Channels: Atomic

The performance of engine or turbine components can be compromised over time through exposure to certain trace elements that may be present in gasoline (petrol) and petro-diesel fuels. It is important to monitor these elements in order to ensure the quality of the fuel and to guard against corrosion and deposition on moving parts. For example, ASTM method D6751 specifi es a maximum limit of 5 ppm for the combined concentration of Ca and Mg, and 5 ppm for the combined concentration of Na and K [1]. Even though the method relates to biofuels, it is equally relevant to other petroleum fuels such as gas turbine fuel oil [2].

This application note describes the determination of trace elements in gasoline, without dilution or digestion, using the innovative Agilent 4100 Microwave Plasma Atomic Emission Spectrometer (MP-AES). The 4100 is a fast sequential atomic emission spectrometer that uses magnetically-coupled microwave energy to generate a robust and stable nitrogen plasma. This stable plasma is capable of analyzing both aqueous and challenging organic matrices. By using a nitrogen plasma, the 4100 MP-AES eliminates the need for expensive and dangerous gases, such as acetylene, resulting in lower running costs, unattended operation, and improved productivity when compared with traditional elemental analysis techniques like fl ame atomic absorption spectrometry.

Read the full Application Note (PDF: 194 KB)

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