Liquid petroleum products - Determination of 30% fatty acid methyl esters (FAME) content in middle distillates - Infrared spectroscopy method

This technical specification establishes a standardized procedure for quantifying the concentration of 30% fatty acid methyl esters (FAME) within the middle distillate fraction of liquid petroleum products. The method relies on infrared spectroscopy to provide precise analytical results, ensuring consistency and reliability across various laboratory settings. By defining specific operational parameters and measurement protocols, the document facilitates accurate assessment of biofuel blending levels in diesel ranges. The approach outlined enables laboratories to determine the presence of esters derived from vegetable oils or animal fats in conventional hydrocarbon fuels. This analytical framework supports quality control processes and regulatory compliance efforts without requiring complex sample preparation techniques. The protocol is designed to be reproducible, allowing different analysts to achieve comparable outcomes when testing similar samples. Through the use of characteristic absorption bands, the method distinguishes FAME components from other hydrocarbons present in the mixture. This specification serves as a reference for industries involved in the production, distribution, and testing of liquid fuel blends. It ensures that measurements adhere to agreed-upon scientific principles and technical requirements.