Artículos de revistas
Sequential Injection Analysis (SIA) for Arsenic Speciation by Capillary Electrophoresis Hyphenated to Inductively Coupled Plasma Sector Field Mass Spectrometry (CE-ICP-SFMS)
Fecha
2009Registro en:
SPECTROSCOPY LETTERS, v.42, n.6/Jul, p.376-382, 2009
0038-7010
10.1080/00387010903187286
Autor
SUAREZ, Carlos A.
ARAUJO, Georgia C. L.
GINE, Maria F.
KAKAZU, Mauricio H.
SARKIS, Jorge E. S.
Institución
Resumen
Sequential injection analysis (SIA) is proposed for managing microvolumes of sample and arsenic species solutions for speciation analysis by capillary electrophoresis focusing on the reduction of hazardous waste residues. An electronically controlled hydrodynamic injector was projected to introduce microvolumes of solutions prepared by SIA into the CE capillary with precision better than 2%. The determination of arsenite, arsenate, monomethylarsonic acid, dimethylarsinic acid, and arsenobetaine was performed from 50 mu L volumes of lyophilized urine and extract of shrimp with the system hyphenated to inductively coupled plasma mass spectrometry (CE-ICP-SFMS).