Coprecipitation-assisted coacervative extraction coupled to high-performance liquid chromatography: An approach for determining organophosphorus pesticides in water samples.
Electrophoresis
; 38(9-10): 1334-1343, 2017 05.
Article
en En
| MEDLINE
| ID: mdl-28176350
An analytical methodology based on coprecipitation-assisted coacervative extraction coupled to HPLC-UV was developed for determination of five organophosphorus pesticides (OPPs), including fenitrothion, guthion, parathion, methidathion, and chlorpyrifos, in water samples. It involves a green technique leading to an efficient and simple analytical methodology suitable for high-throughput analysis. Relevant physicochemical variables were studied and optimized on the analytical response of each OPP. Under optimized conditions, the resulting methodology was as follows: an aliquot of 9 mL of water sample was placed into a centrifuge tube and 0.5 mL sodium citrate 0.1 M, pH 4; 0.08 mL Al2 (SO4 )3 0.1 M; and 0.7 mL SDS 0.1 M were added and homogenized. After centrifugation the supernatant was discarded. A 700 µL aliquot of the coacervate-rich phase obtained was dissolved with 300 µL of methanol and 20 µL of the resulting solution was analyzed by HPLC-UV. The resulting LODs ranged within 0.7-2.5 ng/mL and the achieved RSD and recovery values were <8% (n = 3) and >81%, respectively. The proposed analytical methodology was successfully applied for the analysis of five OPPs in water samples for human consumption of different locations of Mendoza.
Palabras clave
Texto completo:
1
Colección:
01-internacional
Base de datos:
MEDLINE
Asunto principal:
Compuestos Organofosforados
/
Contaminantes Químicos del Agua
/
Residuos de Plaguicidas
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Cromatografía Líquida de Alta Presión
Tipo de estudio:
Prognostic_studies
Idioma:
En
Revista:
Electrophoresis
Año:
2017
Tipo del documento:
Article
País de afiliación:
Argentina
Pais de publicación:
Alemania