Determination of nitrogen in metals and semiconductors by thermal neutron activation

A method of nitrogen determination through the exp 14 N(n,p) exp 14 C reaction is presented. Carbon is chemically separated from molten salt baths by methods previously developed for C determination. Radioactivity measurements are performed by liquid scintillation. A limit of detection of < 1 mu g x g exp --1 of N can be achieved. The method was applied to steel and Si samples. 10 ref.--AA