Online ISSN : 1883-2954
Print ISSN : 0021-1575
ISSN-L : 0021-1575
Regular Article
Development of Simultaneous Ion-Exclusion/Anion-Exchange Chromatographic Determination of Ammonium, Nitrite and Nitrate Ions and Its Application to High-Salt Content Sample
Masanobu MoriTakahiro HironagaTatsuya SatoriHideyuki ItabashiNobutake NakataniDaisuke KozakiKazuhiko Tanaka
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2011 Volume 97 Issue 5 Pages 273-278


Simultaneous chromatographic separation of nitrate ion (NO3), nitrite ion (NO2) and ammonium ion (NH4+) was obtained using single injection, single column and a detector (conductivity). The principle is based on selective ion-exclusion effect for NH4+ and anion-exchange effects for NO3 and NO2 on an OH-formed basic anion-exchange resin column (Tosoh TSKgel Super IC-AZ) with basic eluent (2 mol/m3 KOH). The present system could determine NH4+, NO2 and NO3 in 500-fold diluted artificial seawater sample in 40 min at 0.6 mL/min of flow rate, by standard addition method. Also, this method was applicable to nitrogen analysis in artificial seawater with iron matrix, by pre-column packed with an iminodiacetate chelating resin in order to remove iron or calcium ions.

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© 2011 The Iron and Steel Institute of Japan

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