Polyelectrolyte multilayers as stationary phases for open tubular ion chromatography

• Published in: Journal of Chromatography A Vol. 1216; no. 51; pp. 9022 - 9026
• Main Authors: Pelcová, Pavlína, Kubáň, Vlastimil, Kiplagat, Isaac K., Kubáň, Petr
• Format: Journal Article
• Language: English
• Published: Amsterdam Elsevier B.V 18-12-2009; Amsterdam; New York: Elsevier; Elsevier
• Subjects: Analytical chemistry; Anions - isolation & purification; Cations - isolation & purification; Chemistry; Chromatographic methods and physical methods associated with chromatography; Chromatography - instrumentation; Contactless conductometric detection; Dextran Sulfate - chemistry; Electrolytes - chemistry; Exact sciences and technology; Molecular Weight; Open tubular ion chromatography; Other chromatographic methods; Polyelectrolyte multilayers; Polyethylenes - chemistry; Quaternary Ammonium Compounds - chemistry; Simultaneous separation of anions and cations; Stationary phases; Polyelectrolyte multilayers; Open tubular ion chromatography; Stationary phases; Contactless conductometric detection; Simultaneous separation of anions and cations; Capillary column; cations; Chemical analysis; Coating material; Multilayer; Ammonium(diallyl dimethyl) polymer; Open tubular column; Dextran derivatives; Electrochemical detector; Polyelectrolyte; Inorganic cation; Ion chromatography; Inorganic anion; Simultaneous measurement; Organic sulfate; Contactless conductimetry; Simultaneous separation of anions and; Stationary phase
• ISSN: 0021-9673; 1873-3778
• DOI: 10.1016/j.chroma.2009.10.067

Polyelectrolyte multilayers deposited on the wall of fused silica capillaries were used as stationary phases in open tubular ion chromatography. The multilayers were formed by flushing the capillaries with solutions of polyanions and polycations such as polydiallyldimethylammonium chloride and dextran sulphate. Columns with several bi-layers were constructed and used in low pressure non-suppressed open tubular ion chromatography of common inorganic anions (F
−, Cl
−, NO
3
−) and cations (Li
+, Na
+, NH
4
+, K
+, Cs
+) with contactless conductometric detection. Using sodium benzoate and tartaric acid eluents the separations were typically achieved in less than 35
min with separation efficiencies between 2000 and 9000 theoretical plates. A bi-functional column was prepared that contains both anionic and cationic functional groups and was used for simultaneous separation of anions and cations.