Optimization of the separation of malachite green in water by capillary electrophoresis Raman spectroscopy (CE-RS) based on the stacking and sweeping modes.
Talanta
; 72(2): 368-72, 2007 Apr 30.
Article
en En
| MEDLINE
| ID: mdl-19071626
A capillary electrophoresis Raman spectroscopy (CE-RS) method based on the stacking and sweeping modes are described. A non-fluorescent compound (malachite green, MG; crystal violet, CV) and a doubled Nd:YAG laser (532 nm, 300 mW) were selected as the model compound and light source, respectively. In order to carry out a quantitative and analysis of MG, a monochromator was used to collect the specific Raman line at 1616 cm(-1) (the N-phi and C-C stretching, corresponding to 582 nm when the wavelength of the exciting source is 532 nm). The limit of detection (LOD) for MG was 1.6 x 10(-5) and 1.1 x 10(-5)M, respectively, based on the CZE and MEKC modes. This could be improved to 3.4 x 10(-7) and 5.3 x 10(-9)M, respectively, when the stacking and sweeping modes were applied. The method was also extended to the determination of MG in an actual sample.
Texto completo:
1
Colección:
01-internacional
Base de datos:
MEDLINE
Idioma:
En
Revista:
Talanta
Año:
2007
Tipo del documento:
Article
País de afiliación:
Taiwán
Pais de publicación:
Países Bajos