Quantitative aspects of the separation of arsenical species by free solution capillary electrophoresis

López-Sánchez, José Fermı́n; Amram, M. B.; Lakkis, M. D.; Lagarde, Florence; Rauret, G.; Leroy, M. J. F.

doi:10.1007/bf01780982

Cited by 36 publications

(8 citation statements)

References 18 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…This phenomenon was attributed to the ionic composition of the water sample, which modifies the electrophoretic transport. This was also observed by Lopez-Sanchez et al 17 In spite of a low concentration of nitrate, the Se VI peak co-eluted with nitrate, as expected according to Fig. 4(b).…”

Section: Environmental Analysissupporting

confidence: 87%

Simultaneous speciation of arsenic, selenium, antimony and tellurium species in waters and soil extracts by capillary electrophoresis and UV detection

Casiot¹,

Donard²,

Potin‐Gautier³

et al. 1998

Analyst

View full text Add to dashboard Cite

Capillary electrophoresis with indirect UV detection was used to determine simultaneously arsenic, selenium, antimony and tellurium compounds. The separation was achieved in a fused silica capillary filled with an electrolyte solution containing sodium chromate and an electroosmotic flow modifier, trimethyltetradecylammonium hydroxide (TTAOH). The effect of the TTAOH concentration and electrolyte solution pH on the electrophoretic mobility of the species was studied. The best simultaneous separation of these species was achieved with 0.5 mm TTAOH and an electrolyte pH of 11.2 within 5 min. Detection limits range from 13 mg l 21 for Se VI to 509 mg l 21 for Te IV with electromigrative injection. The reproducibility was below 10% and linearity was verified in the 0-100 mg l 21 range for all species. Interferences by other inorganic ions were studied. This method was applied to the determination of metalloids in a spiked drinking water. Water extracts of industrial soils were analysed and results were compared with those of ICP-MS measurements.

show abstract

Section: Environmental Analysissupporting

confidence: 87%

Simultaneous speciation of arsenic, selenium, antimony and tellurium species in waters and soil extracts by capillary electrophoresis and UV detection

Casiot¹,

Donard²,

Potin‐Gautier³

et al. 1998

Analyst

View full text Add to dashboard Cite

show abstract

“…The ion specific parameters are differences of the analytes in size, shape and charge, but also affected by properties of the electrolyte. CZE was applied for speciation analysis of As and Se compounds with photometric detection [10,11].…”

Section: Introductionmentioning

confidence: 99%

Speciation analysis of arsenic and selenium compounds by capillary electrophoresis

Schlegel

Mattusch

Wennrich

1996

Analytical and Bioanalytical Chemistry

View full text Add to dashboard Cite

High-performance capillary electrophoresis is applied to the separation of different inorganic and organic arsenic and selenium compounds. In comparison with UV-detection, an approach with conductivity detection is described expecting higher sensitivity and universality. In this case the capillary was statically modified with CTAB before the electromigration procedure. The separation was performed with an electrolyte system consisting of CHES and Triton X-100. Detection limits of 0.06 mg/L or lower were obtained for As(V) and Se(VI). Water samples of an arsenic-polluted tailing of tin mining processes were analysed for anions as well as arsenic and selenium species.

show abstract

“…Consequently, it is necessary to operate with slightly acidic or neutral buffers. This CE mode was found to be most favorable for the separation of arsenium compounds [85,[89][90][91][92] as also illustrated in Fig. 8 , on-colurnn preconcentration was performed by electrostacking large volumes of sample injected into the capillary using a field-amplified technique.…”

Section: Anionsmentioning

confidence: 99%

Analysis of inorganic pollutants by capillary electrophoresis

Timerbaev

1997

Electrophoresis

View full text Add to dashboard Cite

Quantitative aspects of the separation of arsenical species by free solution capillary electrophoresis

Cited by 36 publications

References 18 publications

Simultaneous speciation of arsenic, selenium, antimony and tellurium species in waters and soil extracts by capillary electrophoresis and UV detection

Simultaneous speciation of arsenic, selenium, antimony and tellurium species in waters and soil extracts by capillary electrophoresis and UV detection

Speciation analysis of arsenic and selenium compounds by capillary electrophoresis

Analysis of inorganic pollutants by capillary electrophoresis

Contact Info

Product

Resources

About