微量電量滴定法による石油中の全窒素分の定量

抄録

Here has been examined a technique for determining trace amount of total nitrogen in petroleum using a Dohrmann's microcoulometric titrating system (MCTS-10). It has been found out that nitrogen contents in crude oil and residual fuel oil can be determined by selecting the proper inlet temperature varying depending upon the kind of sample. The reproducibility of Heavy oil A, having 65 cSt at 100°F, is 2.8ppm at the concentration of 27ppm N and its accuracy corresponds to that of Kjeldahl method.
This technique, therefore, is expected to be used in routine laboratory testings in petroleum refineries because of its time-saving and highly sensitive features.