Nitrogen Analysis by Chemiluminescence.

With high overall accuracy, a chemiluminescent detector can easily measure low ppm nitrogen levels in model mixutres and shale-derived jet fuel distillates. Forty model mixtures were analyzed using an Antek Model 720C chemiluminescent detector to demonstrate the absolute accuracy and precision of the instrument. A severely hydrotreated shale JP-4 jet fuel was blended with selected model mixtures to obtain six fuels ranging from less than 1 to approximately 150 parts-per-million added nitrogen. Total nitrogen analysis was then accomplished by two different chemiluminescent detection systems, as well as by the microkjeldahl and microcombustion methods. Results clearly point out the ability of the chemiluminescent method to measure the nitrogen level of low ppm shale-derived aviation turbine fuel.