摘要
采用梯度淋洗离子色谱法对碱金属、碱土金属及其铵类进行分析,该方法采用CG3分离柱,0.3mmol/LHCl为淋洗剂,4min后改用3.0mmol/L盐酸间苯二胺和5.0mmo1/LHCl作淋洗剂(流速2.0ml/min)采用微膜抑制柱,再生液为50mmol/LKOH(流速2.0ml/min),用电导检测法分别检测Li ̄+、Na ̄+、NH、K ̄+和Mg ̄(2+)、Ca ̄(2+)、Sr ̄(2+)、Ba ̄(2+).对分析条件进行了探讨.
Determination of alkali metals,alkali earth metals and ammonium by gradient elution ion chromatographyhave been tested.In this work,the separation column is CG3 with 0.3 mmol/L HCl and the flow rate is 2.0ml/min. After 4 minutes step gradient to 3.0 mmol/L m-phenylenediamine dihydrochloride and 5.0 rnmol/LHCl and suppressed with 50 mmol/L KOH,the flow rate is 2.0m1/min,in cation micro membrane suppres-sor.The conditions of determination were investigated.
出处
《科技通报》
1994年第5期297-300,共4页
Bulletin of Science and Technology
关键词
离子色谱
碱金属
碱土金属
阳离子
ion chromatography
alkali metal
alkali earth metal
ammonium