アンモニウム，亜硝酸，硝酸イオンのイオン排除／陰イオン交換クロマトグラフィーによる同時定量の開発および高塩濃度試料への応用
作者： Masanobu Mori , Takahiro Hironaga , Tatsuya Satori , Hideyuki Itabashi , Nobutake Nakatani
DOI: 10.2355/TETSUTOHAGANE.97.273
关键词: Chromatography 、 Chelating resin 、 Seawater 、 Standard addition 、 Matrix (chemical analysis) 、 Column chromatography 、 Chemistry 、 Nitrite 、 Ammonium 、 Artificial seawater
摘要: Simultaneous chromatographic separation of nitrate ion (NO3−), nitrite (NO2−) and ammonium (NH4+) was obtained using single injection, column a detector (conductivity). The principle is based on selective ion-exclusion effect for NH4+ anion-exchange effects NO3− NO2− an OH−-formed basic resin (Tosoh TSKgel Super IC-AZ) with eluent (2 mol/m3 KOH). present system could determine NH4+, in 500-fold diluted artificial seawater sample 40 min at 0.6 mL/min flow rate, by standard addition method. Also, this method applicable to nitrogen analysis iron matrix, pre-column packed iminodiacetate chelating order remove or calcium ions.
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