Inorganic analysis using CE: Advanced methodologies to face old challenges

Abstract

Inorganic species still remain of secondary importance when CE is used as an analytical separation tool. Despite considerable efforts of great many groups over last 20 years, plenty of competition, mostly from ion chromatography and elemental MS, restrains the routine use of CE in inorganic analysis. If there is yet hope clinging to make CE a viable alternative in the field, success would ultimately be attained through research activities on negating the disadvantages and amplifying the advantages of the method. Being the latest update of a series of reviews covering the time period from 1990 to 2010, this paper will comment on how and to what extent these challenges of inorganic CE analysis have been addressed in two recent years.

Species, Spatial-Temporal Distribution, and Contamination Assessment of Trace Metals in Typical Mariculture Area of North China

“…There are many techniques for separation and detection of TMs, including gas chromatography (Wang and Cui, 2016), capillary zone electrophoresis (Kubáň and Timerbaev, 2014), supercritical fluid chromatography (Henry and Yonker, 2006), atomic absorption spectrometry (Ribeiro et al, 2017), inductively coupled plasma mass spectrometry (Zhu et al, 2017), and atomic emission spectrometry (Vidal et al, 2016). Among the analytical techniques, electroanalytical techniques are the most universal analytical tool due to the simultaneous quantitative and qualitative determinations of TMs in various matrices with high levels of convenience and rapid and straightforward analytical processes.…”

Simultaneous Speciation Analysis of Trace Heavy Metals (Cu, Pb, Cd and Zn) in Seawater from Sishili Bay, North Yellow Sea, China

“…Most of the current speciation analysis methods for HMs combine both separation and detection techniques. Separation techniques include gas chromatography (Wang and Cui 2016), supercritical fluid chromatography (Henry 2006), capillary zone electrophoresis (Kubáň and Timerbaev 2014), and so on. As to the detection techniques, atomic absorption spectrometry (Ribeiro et al 2017), atomic emission spectrometry (Vidal et al 2016), and inductively coupled plasma mass spectrometry (Zhu et al 2017) are most widely used.…”

Indirect CE‐UV detection for the characterization of organic and inorganic ions of a broad mobility and pKa range in engine coolants

“…During operation, transformation products such as glycolic acid or oxalic acid may form . CE is well suited to analyze all ions of interest (hydrochloric acid, nitric acid, nitrous acid, succinic acid, formic acid, sulfuric acid, acetic acid, hydrofluoric acid, glycolic acid, oxalic acid, and phosphoric acid) present in this mostly neutral matrix . To our knowledge, none of the published methods reached baseline separation of all specified anions due to the broad range of pK a values (−7 to 4.8) and thus electrophoretic mobilities (see Table ).…”