Total Nitrogen Determination in Bio-based Fuels According to ASTM D4629 – Standard Test Method for Trace Nitrogen in Liquid Hydrocarbons by Syringe/Inlet Oxidative Combustion and Chemiluminescence Detection The production of alternative fuels becomes increasingly popular, as they provide a way to respond to both, the growing demand for energy and the goal to reduce carbon emissions. In addition to technologies based on the fermentation of starch and sugar, and the transesterification or hydrocracking of plant and animal oil (first generation biofuels), processes based on the conversion of cellulose-rich biomass and waste appear to be promising (second generation biofuels). With the use of biogenic materials for fuel production, their inherently high content of harmful hydrocarbons containing nitrogen, sulfur and chlorine has to be monitored. The desired TN content is far below 1 ppm, in general it should be around 100 ppb N.
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