Standard Test Method for Naphthalene Hydrocarbons in Aviation Turbine Fuels by Ultraviolet Spectrophotometry.
Get more information about the standard at ASTM D1840-24
The ASTM D1840 test method quantifies the concentration of naphthalene hydrocarbons in aviation turbine fuels. Naphthalene, a subset of aromatic hydrocarbons, are known for their high energy density but can also lead to soot formation, increased emissions, and deposit build-up in engines. By offering a reliable method for evaluating naphthalene content, ASTM D1840 plays a vital role in ensuring the performance, safety, and environmental compliance of aviation turbine fuels. It supports cleaner aviation operations and aligns with global emissions reduction initiatives.
Details
The method employs ultraviolet (UV) spectrophotometry to measure absorbance in the UV range. A fuel sample is dissolved in an appropriate solvent, and its absorbance at a specific wavelength is measured using a UV spectrophotometer. The absorbance value correlates with the concentration of naphthalene hydrocarbons in the fuel. This test method is particularly relevant for kerosene-based aviation turbine fuels, such as Jet A and Jet A-1, which are widely used in commercial and military aviation.
Industries & Applications
ASTM D1840 is widely applied across multiple industries:
- Aviation industry: Ensures that aviation turbine fuels meet required specifications for clean and efficient combustion, enhancing engine performance and reducing emissions
- Petroleum refining: Refineries rely on this method to control the aromatic content of jet fuels, maintaining product quality and meeting international fuel standards
- Aircraft engine manufacturers: Provides critical data on fuel composition to optimize engine designs for performance and longevity
- Regulatory compliance: Used by agencies and organizations to enforce limits on aromatic hydrocarbon content, particularly for environmental and operational safety regulations
- Energy research: Facilitates the development of advanced fuels with reduced aromatic content, supporting cleaner and more sustainable aviation solutions