Determination of cadmium and lead in edible oils by electrothermal atomic absorption spectrometry after reverse dispersive liquid-liquid microextraction.
Talanta
; 124: 106-10, 2014 Jun.
Article
en En
| MEDLINE
| ID: mdl-24767452
The dispersive liquid-liquid microextraction of edible oils with a low volume of an acidic solution in the presence of isopropyl alcohol allows cadmium and lead to be completely separated into the aqueous phase. After centrifugation, the metals are determined by electrothermal atomization atomic absorption spectrometry using a palladium salt for chemical modification in the heating cycle. Using a 10 g oil sample, the enrichment factor is 140, which permits detection limits of 0.6 and 10 ng kg(-1) for cadmium and lead, respectively. The results agree with those obtained after sample mineralization. Data for the cadmium and lead levels for 15 samples of different characteristics are given.
Palabras clave
Texto completo:
1
Colección:
01-internacional
Base de datos:
MEDLINE
Asunto principal:
Espectrofotometría Atómica
/
Cadmio
/
Aceites
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Microextracción en Fase Líquida
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Plomo
Idioma:
En
Revista:
Talanta
Año:
2014
Tipo del documento:
Article
País de afiliación:
España
Pais de publicación:
Países Bajos