Simultaneous analysis and its device null of nitrogen-containing

摘要

PURPOSE:To enable the simultaneous analysis of inorg. nitrogenous ions by separating the nitrogenous ions with ion chromatography connected with a cation exchange column and anion exchange column in series to a moving phase flow passage. CONSTITUTION:A sample contg. the nitrogenous ion (inorg. nitrogenous ions selected arbitrarily from a group consisting of nitrite ions, nitrate ions and ammonium ions) are separated with the ion chromatography which uses an acidic aq. soln. of =3pH without having UV absorption as a moving phase and is connected with the cation exchange column 6 and the anion exchange column 7 in series to the moving phase flow passage. The separated cation fractions are detected with an electric conductivity detector 8 and the anion fractions likewise with a UV spectrophotometric detector 9, respectively.