Multi-component elemental and molecular analysis of lanthanides by capillary electrophoresis–electrospray mass spectrometry (CE–ESI-MS)

RIMS analysis of ion induced fragmentation of molecules sputtered from an enriched U3O8 matrix

“…The increasing threat of nuclear weapons development has prompted the use of a number of mass spectrometry techniques charged with the task of determining the isotopic composition of trace amounts of radionuclides from a diverse set of materials [1][2][3][4][5][6][7]. A major focus for these types of measurements is on improving the sensitivity for the detection of uranium and transuranic isotopes in the presence of isobaric interferences without the need for complex and time-consuming sample preparation methods.…”

Simultaneous determination of rare earth elements in ore and anti-corrosion coating samples using a portable capillary electrophoresis instrument with contactless conductivity detection

“…For separation of REEs by CE, normally acidic conditions have been employed to prevent any possible precipitation of metallic ions from the samples during electrophoresis [18,20,22,23,26,32]. From our experience, acidic BGEs would offer good baseline stability and reproducibility of migration times in many cases when the capillary is equilibrated with the BGE over a long period (many h) prior to CE-C 4 D analyses and flushed with the BGE between successive runs [37,38].A good CE-C 4 D performance for REEs separation using a BGE at low pH is expected as i) the electrophoretic mobilities of REEs are sufficiently high to ensure their arrival at the detection position without having recourse to a high electro osmotic flow (EOF) and ii) there is no adsorption of REEs (inorganic cations) to the capillary's internal wall.…”

“…␣-Hydroxyisobutyrate (HIB − ) from HIBA is by far the most frequently used ligand for separation of REEs with CE [18,20,22,23,26,32]. This reagent was therefore included into the BGE for the separation of REEs with CE-C 4 D. The effect of the concentration of HIBA on peak separation and peak heights is shown in Fig.…”

“…Reviews on applications of CE for metal species determination in environmental and biological samples can be found in [11][12][13][14][15]. Indeed, the simplest format of the technique, namely capillary zone electrophoresis (CZE) has been reported for the determination of REEs in different matrices, using UV-vis (UV-vis) detection [16][17][18][19][20][21][22][23], laser induced fluorescence (LIF) detection [24,25], mass-spectrometric detection [26] or detection by ICP-MS [27,28]. Other modes of CE have also been used for this purpose, notably micellar electrokinetic chromatography (MEKC) [29][30][31], electrokinetic supercharging (ESK) [32] and isotachophoresis (ITP) [33].…”

Study of metal–ligand species by ESI-MS: The case of La, Nd and Th complexes with EDTA

“…In the presence of chelating substances, these metals show high solubility and low affinity for the inorganic solid particles, because they form soluble complexes. In aquatic environments, the fate and transport (i.e., both mobilization and retardation) of lanthanides and actinides are strongly correlated with presence of complexing agents in solution [1].…”