Separation and Sensitive Detection of Lanthanides by Capillary Electrophoresis and Contactless Conductivity Detection.
J Chromatogr Sci
; 55(4): 465-470, 2017 Apr 01.
Article
en En
| MEDLINE
| ID: mdl-27988487
ABSTRACT
A rapid and sensitive capillary zone electrophoresis method for the simultaneous separation and determination of lanthanide ions, combined with capacitively coupled contactless conductivity detection (C4D), is reported. The influence of experimental parameters on separation was investigated. The optimal separation conditions were obtained when 4.5 mM 2-hydroxyisobutyric acid and 1 mM acetic acid (HAc) at pH 4.5 were used as buffer solution. Under these conditions, complete separation of all 14 lanthanide ions was achieved in 6 min. With the use of the C4D detector, the sensitive detection of non-UV active lanthanide ions was achieved without the need of a UV active ligand or a visualization agent. The sensitivities were further enhanced with a sample stacking procedure. The limits of detection were to be found between 2.77 and 8.26 nmol/L and the limits of quantification were between 9.29 and 27.5 nmol/L for 14 lanthanide ions.
Texto completo:
1
Colección:
01-internacional
Banco de datos:
MEDLINE
Tipo de estudio:
Diagnostic_studies
Idioma:
En
Revista:
J Chromatogr Sci
Año:
2017
Tipo del documento:
Article
País de afiliación:
Turquía