Monolithic stationary phases for fast ion chromatography and capillary electrochromatography of inorganic ions

Abstract

Review Monolithic stationary phases for fast ion chromatography and capillary electrochromatography of inorganic ionsThe focus of this review is on current developments in monolithic stationary phases for the fast analysis of inorganic ions and other small molecules in ion chromatography (IC) and capillary electrochromatography (CEC), concentrating in particular on the properties of organic (polymer) monolithic materials in comparison to inorganic (silica-based) monoliths. The applicability of these materials for fast IC is discussed in the context of recent publications, including the range of synthesis and modification procedures described. While commercial monolithic silica columns already show promising results on current IC instrumentation, polymer-based monolithic stationary phases are currently predominantly used in the capillary format on modified micro-IC systems. However, they are beginning to find application in IC particularly under high pH conditions, with the potential to replace their particle-packed counterparts.

Recent trends in CE of inorganic ions: From individual to multiple elemental species analysis

“…Wide-ranging reviews on various aspects of interface design, potential problems, and approaches for improving the sensitivity of CE-ICP-MS couplings are also available in print [16,17]. In their focal point [49][50][51] article, Majidi and co-workers [3] compared different modern separation methods coupled to ICP-MS detection as a speciation tool. As a result, the authors came to the conclusion that CE techniques are most suitable when the sample volumes are limited or/and the presence of stationary phase may impair the original speciation integrity in a sample.…”

Rapid and Simultaneous Determination of Tetrafluoroborate, Thiocyanate and Hexafluorophosphate by High-Performance Liquid Chromatography Using a Monolithic Column and Direct Conductivity Detection

“…29,30 In recent years, the preparation and application of monolithic columns have been developed rapidly in capillary electrochromatography (CEC), HPLC and IC. [30][31][32][33][34][35] The main forms of monoliths are organic polymer monoliths and silica-based monoliths. In IC, there are two methods for anion separation using a silica-based monolithic column.…”

Partition/Ion-Exclusion Chromatographic Ion Stacking for the Analysis of Trace Anions in Water and Salt Samples by Ion Chromatography

“…[13][14][15][16][17] Nevertheless, there is a need to find effective and fast preconcentration techniques for increasing the sensitivity of detection because it is often difficult to detect low level inorganic anions in the presence of a large excess of foreign ions directly by spectrophotometric and conductivity measurements.…”