TY - JOUR
T1 - Differential pulse voltammetric determination of methyl parathion based on multiwalled carbon nanotubes-poly(acrylamide) nanocomposite film modified electrode
AU - Zeng, Yanbo
AU - Yu, Dajun
AU - Yu, Yanyan
AU - Zhou, Tianshu
AU - Shi, Guoyue
PY - 2012/5/30
Y1 - 2012/5/30
N2 - A sensitive electrochemical differential pulse voltammetry method was developed for detecting methyl parathion based on multiwalled carbon nanotubes-poly(acrylamide) (MWCNTs-PAAM) nanocomposite film modified glassy carbon electrode. The novel MWCNTs-PAAM nanocomposite, containing high content of amide groups, was synthesized by PAAM polymerizing at the vinyl group functionalized MWCNTs surface using free radical polymerization. The MWCNTs-PAAM nanocomposite was characterized by Fourier transform infrared spectroscopy, thermal gravimetric analysis and scanning electron microscopy. Electrochemical behavior and interference studies of MWCNTs-PAAM/GCE for methyl parathion were investigated. The experimental results demonstrated that the MWCNTs-PAAM/GCE exhibited a high adsorption and strong affinity toward methyl parathion compared with some metal ions and nitroaromatic compounds, which exist in environmental samples. The adsorbed amount of methyl parathion on the MWCNTs-PAAM/GCE approached the equilibrium value upon 5min adsorption time. A linear calibration curve for methyl parathion was obtained in the concentration range from 5.0×10 -9 to 1.0×10 -5molL -1, with a detection limit of 2.0×10 -9molL -1. The MWCNTs-PAAM/GCE was proved to be a suitable sensing tool for the fast, sensitive and selective determination of methyl parathion in environmental water samples.
AB - A sensitive electrochemical differential pulse voltammetry method was developed for detecting methyl parathion based on multiwalled carbon nanotubes-poly(acrylamide) (MWCNTs-PAAM) nanocomposite film modified glassy carbon electrode. The novel MWCNTs-PAAM nanocomposite, containing high content of amide groups, was synthesized by PAAM polymerizing at the vinyl group functionalized MWCNTs surface using free radical polymerization. The MWCNTs-PAAM nanocomposite was characterized by Fourier transform infrared spectroscopy, thermal gravimetric analysis and scanning electron microscopy. Electrochemical behavior and interference studies of MWCNTs-PAAM/GCE for methyl parathion were investigated. The experimental results demonstrated that the MWCNTs-PAAM/GCE exhibited a high adsorption and strong affinity toward methyl parathion compared with some metal ions and nitroaromatic compounds, which exist in environmental samples. The adsorbed amount of methyl parathion on the MWCNTs-PAAM/GCE approached the equilibrium value upon 5min adsorption time. A linear calibration curve for methyl parathion was obtained in the concentration range from 5.0×10 -9 to 1.0×10 -5molL -1, with a detection limit of 2.0×10 -9molL -1. The MWCNTs-PAAM/GCE was proved to be a suitable sensing tool for the fast, sensitive and selective determination of methyl parathion in environmental water samples.
KW - Differential pulse voltammetry
KW - Electrochemical sensor
KW - Environmental water samples
KW - Methyl parathion
KW - Multiwalled carbon nanotubes-poly(acrylamide) nanocomposite
KW - Organophosphorus pesticides
UR - https://www.scopus.com/pages/publications/84859817443
U2 - 10.1016/j.jhazmat.2012.03.033
DO - 10.1016/j.jhazmat.2012.03.033
M3 - 文章
C2 - 22494904
AN - SCOPUS:84859817443
SN - 0304-3894
VL - 217-218
SP - 315
EP - 322
JO - Journal of Hazardous Materials
JF - Journal of Hazardous Materials
ER -