A graphene oxide-molybdenum disulfide composite used as stationary phase for determination of sulfonamides in open-tubular capillary electrochromatography.
J Chromatogr A
; 1629: 461487, 2020 Oct 11.
Article
em En
| MEDLINE
| ID: mdl-32823013
ABSTRACT
A graphene oxide-molybdenum disulfide (GO-MoS2) composite was synthesized and utilized as the highly efficient stationary phase of open-tubular capillary electrochromatography (OT-CEC). The characterization results indicated that GO-MoS2 composite was successfully synthesized. The GO-MoS2-coated capillary column was prepared by covalent immobilization method for the determination of seven sulfonamides. The baseline separation of seven sulfonamides was achieved by GO-MoS2-coated capillary column. The linear range was 0.05-100 µg/mL for sulfisomidine, sulfathiazole, sulfamerazine, phthalylsulfathiazole and sulfacetamide, 0.1-100 µg/mL for sulfamonomethoxine and sulfachloropyridazine with a satisfactory correlation coefficients (R2) > 0.9994. This developed OT-CEC method was successfully applied to determinate of seven sulfonamides in environmental water and milk samples with good recoveries of 85.77% - 109.10% and 80.03% - 109.97%, respectively. These results indicated that GO-MoS2-coated capillary column possessed good stability and repeatability.
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Texto completo:
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Base de dados:
MEDLINE
Assunto principal:
Sulfonamidas
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Dissulfetos
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Eletrocromatografia Capilar
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Grafite
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Molibdênio
Idioma:
En
Ano de publicação:
2020
Tipo de documento:
Article