公开(公告)号：JPH02280051A

公开(公告)日：1990-11-16

申请号：JP10084189

申请日：1989-04-20

Applicant: TOA ELECTRONICS

Inventor： HATA HIROSHI ,  SAITO HIROKO ,  GOTO RYOZO ,  YAMASATO MASAHARU

IPC: G01N30/02 ,  G01N30/26

Abstract: PURPOSE:To simultaneously measure the monovalent and bivalent anion concns. with high sensitivity by conductometry by using a single liq. eluent contg. a metal ion and an org. acid forming a complex with the metal ion as the eluent to separate the respective cations. CONSTITUTION:A single separation column is used, and respective cations are separated using a liq. eluent contg. a metal ion and an org. acid forming a complex with the metal ion. Consequently, all the cations can be separated by the ordinary ion chromatography with a single separation column and a single liq. eluent, and the monovalent and bivalent cation concns. are simultaneously measured with high sensitivity. In addition, the metal ion should be trivalent aluminum ion, and citric acid or tartaric acid is preferably used as the org. acid.