Ion chromatography on chelating stationary phases: separation of alkali metals

被引:18
作者
Haidekker, A
Huber, CG
机构
[1] Leopold Franzens Univ, Inst Analyt & Radiochem, A-6020 Innsbruck, Austria
[2] Leopold Franzens Univ, Inst Forens Med, A-6020 Innsbruck, Austria
关键词
stationary phases; LC; chelating stationary phases; complexation; alkali metals;
D O I
10.1016/S0021-9673(01)00868-8
中图分类号
Q5 [生物化学];
学科分类号
071010 ; 081704 ;
摘要
Analytical 250X4.6 mm I.D. columns packed with iminodiacetic acid (IDA) derivatised silica were used to separate alkali metal ions and the ammonium ion in combination with non-suppressed conductivity detection. The addition of 2.5-10 mmol/l of the macrocyclic crown ether 18-crown-6 to the nitric acid eluent resulted in a change in the elution order and a significant improvement in the resolution between potassium and ammonium because of selective complexation of potassium. However, the admixture of 15-crown-5 did not improve the resolution of lithium and sodium, although 15-crown-5 is a selective complexing agent for sodium. Retention and resolution of lithium, sodium, ammonium, cesium, rubidium and potassium ions increased at lower temperatures down to 1 degreesC. The simultaneous separation of alkali and transition metals under isocratic conditions was achieved with an eluent comprising 10 mmol/l 18-crown-6, 1.5 mmol/l dipicolinic acid, and 1.9 mmol/l nitric acid. The chromatographic system enabled the quantitation of alkali metal ions with detection limits in the low ppb range and excellent Linearity. Finally, the applicability of the method was approved by quantitation of sodium, ammonium and potassium in different water samples. (C) 2001 Elsevier Science B.V. All rights reserved.
引用
收藏
页码:217 / 226
页数:10
相关论文
共 22 条
[1]   ION CHROMATOGRAPHY OF TRANSITION-METALS ON AN IMINO-DIACETIC ACID BONDED STATIONARY PHASE [J].
BONN, G ;
REIFFENSTUHL, S ;
JANDIK, P .
JOURNAL OF CHROMATOGRAPHY, 1990, 499 :669-676
[2]   ION-CHROMATOGRAPHIC SEPARATION OF ALKALI-METALS IN ORGANIC-SOLVENTS [J].
DUMONT, PJ ;
FRITZ, JS .
JOURNAL OF CHROMATOGRAPHY A, 1995, 706 (1-2) :149-158
[3]   MACROCYCLE-BASED COLUMN FOR THE SEPARATION OF INORGANIC CATIONS BY ION CHROMATOGRAPHY [J].
EDWARDS, BR ;
GIAUQUE, AP ;
LAMB, JD .
JOURNAL OF CHROMATOGRAPHY A, 1995, 706 (1-2) :69-79
[4]   THE EFFECT OF TEMPERATURE ON SINGLE-COLUMN ION-CHROMATOGRAPHY OF METAL-IONS [J].
FORTIER, NE ;
FRITZ, JS .
TALANTA, 1987, 34 (04) :415-418
[5]   STABILITY CONSTANTS OF CYCLIC POLYETHER COMPLEXES WITH UNIVALENT CATIONS [J].
FRENSDORFF, HK .
JOURNAL OF THE AMERICAN CHEMICAL SOCIETY, 1971, 93 (03) :600-+
[6]  
FRITZ JS, 2000, ION CHROMATOGRAPHY, P148
[7]  
GREENWOOD NN, 1990, CHEM ELEMENTE, P120
[8]   CALORIMETRIC STUDY OF INTERACTION IN AQUEOUS SOLUTION OF SEVERAL UNIVALENT AND BIVALENT METALS IONS WITH CYCLIC POLYETHER DICYCLOHEXYL-18-CROWN-6 AT 10,25, AND 40 DEGREES [J].
IZATT, RM ;
NELSON, DP ;
RYTTING, JH ;
HAYMORE, BL ;
CHRISTEN.JJ .
JOURNAL OF THE AMERICAN CHEMICAL SOCIETY, 1971, 93 (07) :1619-&
[9]   THERMODYNAMIC AND KINETIC DATA FOR CATION MACROCYCLE INTERACTION [J].
IZATT, RM ;
BRADSHAW, JS ;
NIELSEN, SA ;
LAMB, JD ;
CHRISTENSEN, JJ .
CHEMICAL REVIEWS, 1985, 85 (04) :271-339
[10]   POLYMER-COATED CATION-EXCHANGE STATIONARY PHASES ON THE BASIS OF SILICA [J].
KOLLA, P ;
KOHLER, J ;
SCHOMBURG, G .
CHROMATOGRAPHIA, 1987, 23 (07) :465-472