N Determination in Engine Oil According to the Kjeldahl Method

Oil additives are used to improve the base oil into a high performing lubricant. By utilizing the same base stock, many different oils can be manufactured, each with its own unique properties, by adding different additive packages. Combined nitrogen additives in petrochemical fuels give origin by combustion to nitrogen oxides whose emission in the atmosphere is subjected to limitations. This application note presents the nitrogen determination in engine oil according to the Kjeldahl method.