Method and apparatus for the determination of nitrite - nitrogen in 12-40 times higher

摘要

P process and device for analysis for the determination of nitrogen. This method consists in reacting an aqueous solution containing nitrites and nitrates, with an aqueous solution of sulfamic laughed at, in a reactor 9 which is provided in a stream of carrier gas which does not substantially gaseous nitrogen, and this fact, in the case of an aqueous solution containing nitrates, the solution is first subjected to the reduction of the nitrates in the case of nitrites, summitskills will provide of the gaseous nitrogen produced by the reaction, with the carrier gas, and by detecting the gaseous nitrogen with a detector 30 of gaseous nitrogen. / p & & p & the present invention is particularly useful to provide devices for analysis for the determination of nitrogen obtained on the basis of nitrites and nitrates contained in the aqueous systems. / p