Author/Authors :
Mori، نويسنده , , Masanobu and Tanaka، نويسنده , , Kazuhiko and Helaleh، نويسنده , , Murad I.H. and Xu، نويسنده , , Qun and Ikedo، نويسنده , , Mikaru and Ogura، نويسنده , ,
Yutaka S. Sato، نويسنده , , Shinji and Hu، نويسنده , , Wenzhi and Hasebe، نويسنده , , Kiyoshi، نويسنده ,
Abstract :
This paper describes an ion-exclusion chromatographic system for the rapid and selective determination of ammonium ion. The optimized ion-exclusion chromatographic system was established with a polymethacrylate-based weakly basic anion-exchange resin column (TSKgel DEAE-5PW) as the separation column, an aqueous solution containing 0.05 mM tetramethylammonium hydroxide (pH 9.10) as eluent with conductimetric detection for the analyte determination. Under the optimum chromatographic conditions, ammonium ion was determined within 2.3 min with a detection limit (S/N=3) better than 0.125 μM. Ammonium ion in rain and river waters was precisely determined using this ion-exclusion chromatographic system.
