Idioma:

Monocrotophos detection with a bienzyme biosensor based on ionic-liquid-modified carbon nanotubes

Zou, Bin ; Chu, Yanhong ; Xia, Jiaojiao

Analytical and bioanalytical chemistry, 2019-05, Vol.411 (13), p.2905-2914 [Periódico revisado por pares]

Berlin/Heidelberg: Springer Berlin Heidelberg

Texto completo disponível

Citações Citado por

Enviar para

Título:
Monocrotophos detection with a bienzyme biosensor based on ionic-liquid-modified carbon nanotubes
Autor: Zou, Bin ; Chu, Yanhong ; Xia, Jiaojiao
Assuntos: Acetylcholinesterase ; Acetylcholinesterase - chemistry ; Agricultural production ; Agrochemicals ; Analytical Chemistry ; Biochemistry ; Biomimetic Materials - chemistry ; Biosensing Techniques - methods ; Biosensors ; Brassica - chemistry ; Carbon ; Characterization and Evaluation of Materials ; Chemistry ; Chemistry and Materials Science ; Detectors ; Electrodes ; Enzymes, Immobilized - chemistry ; Evaluation ; Food safety ; Food Science ; Glassy carbon ; Ionic liquids ; Ionic Liquids - chemistry ; Ions ; Iron ; Iron Compounds - chemistry ; Laboratory Medicine ; Lactuca - chemistry ; Limit of Detection ; Metalloporphyrins - chemistry ; Monitoring/Environmental Analysis ; Monocrotophos ; Monocrotophos - analysis ; Multi wall carbon nanotubes ; Nanotechnology ; Nanotubes ; Nanotubes, Carbon - chemistry ; Nanotubes, Carbon - ultrastructure ; Onions - chemistry ; Organophosphates ; Organophosphorus pesticides ; Oxidation ; Pesticides ; Pesticides - analysis ; Properties ; Research Paper ; Sensitivity ; Stability
É parte de: Analytical and bioanalytical chemistry, 2019-05, Vol.411 (13), p.2905-2914
Descrição: Acetylcholinesterase (AChE) biosensor technology is widely applied in the detection of organophosphate pesticides in agricultural production via the inhibition of AChE activity by organophosphates. However, the AChE electrode has some drawbacks, such as low stability and high overpotential. Combining the advantages of multiwalled carbon nanotubes (MWCNTs) and ionic liquids, we constructed a novel bienzyme electrode [Cl/iron porphyrin (FePP)-modified MWCNTs/AChE/glassy carbon electrode], which included AChE and mimetic oxidase FePP. In this electrode, FePP is covalently bound to the AChE carrier via ionic liquid for increased electrode sensitivity and stability. Under optimal conditions, this novel biosensor has a monocrotophos detection limit of 3.2 × 10 –11 mol/L and good recovery of 89–104%. After 5 weeks of storage at 4 °C, the oxidation current was 97.8% of its original value. The biosensor has high stability and sensitivity for monocrotophos detection and is a promising device for monitoring food safety. Graphical abstract The complete synthesis process of Cl/FePP–MWCNTs/AChE/GCE
Editor: Berlin/Heidelberg: Springer Berlin Heidelberg
Idioma: Inglês

Links

View this record in MEDLINE/PubMed

Voltar para lista de resultados

Anterior Resultado 6 Avançar Ir para próxima página

Realização: Logos de Redes Sociais:

Monocrotophos detection with a bienzyme biosensor based on ionic-liquid-modified carbon nanotubes

Zou, Bin ; Chu, Yanhong ; Xia, Jiaojiao

Berlin/Heidelberg: Springer Berlin Heidelberg

Buscando em bases de dados remotas. Favor aguardar.