UOP 971 and UOP 981: Ultra-Trace Level Total Nitrogen Detection in Aromatics and Liquid Hydrocarbons

Oil refinery and clouds in sky.

Very low levels of nitrogen are detrimental to the effectiveness of catalysts used in refining processes. Petrochemical plants which are producing BTX type of aromatics therefore require the ability to monitor the total nitrogen content of feedstocks in the low ug/kg region.

This application note describes a direct injection, oxidative combustion followed by chemiluminescence detection technique for the measurement of ultra-low levels of Total Nitrogen (TN) present in aromatic hydrocarbons in compliance with UOP 971 and UOP 981 methods.

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