NB/SH/T 0980-2019 "Determination of alkaline nitrogen content in petroleum fractions, potentiometric Titrimetric method" standard specifies the method for the determination of alkaline nitrogen content in petroleum fractions using potentiometric Titrimetric method. It is suitable for the determination of petroleum fractions with alkaline nitrogen content not exceeding 2000mg/kg. For samples with content exceeding 2000mg/kg, it can be determined by appropriate dilution, but the standard does not provide the precision requirements after dilution. This standard deals with certain potentially dangerous materials, operations and equipment. Before use, it should be ensured that appropriate safety and protective measures are taken and relevant regulatory restrictions are observed.