Electrochemical analysis of trifluralin using a nanostructuring electrode with multi-walled carbon nanotubes.
The electroanalytical behaviors of the endocrine-disrupting chemical trifluralin have been studied at a nanostructuring electrode. The nanostructuring electrode was fabricated by coating a uniform multi-wall carbon nanotubes/dihexadecyl hydrogen phosphate (MWNTs/DHP) film on glassy carbon electrode (GCE). The reduction peak currents of trifluralin increased remarkably and the reduction peak potential shifted positively at the nanostructuring electrode, compared with that at a bare GCE. The results showed that this nanostructuring electrode exhibited excellent enhancement effects on the electrochemical reduction of trifluralin. Consequently, a simple and sensitive electroanalytical method was developed for the determination of trifluralin. Under optimal conditions, a linear response of trifluralin was obtained in the range from 5.0 x 10(-9) to 6.0 x 10(-6) mol L(-1) (r=0.998) and with a limit of detect (LOD) of 2.0 x 10(-9) mol L(-1). The proposed procedure was successfully applied to determine trifluralin in soil samples with satisfactory results.
Wen
Xiaoqin
X
Key Laboratory of Environmentally Friendly Chemistry and Applications of Ministry of Education, College of Chemistry, Xiangtan University, Xiangtan, Hunan 411105, PR China.
Fei
Junjie
J
Chen
Xiaoming
X
Yi
Lanhua
L
Ge
Fang
F
Huang
Meihua
M
D055664:Electrochemical Techniques; D052244:Endocrine Disruptors / Q000032:analysis*; D004784:Environmental Monitoring / Q000295:instrumentation / Q000379:methods; D008839:Microelectrodes; D008855:Microscopy, Electron, Scanning; D037742:Nanotubes, Carbon; D012987:Soil / Q000032:analysis*; D012989:Soil Pollutants / Q000032:analysis*; D014274:Trifluralin / Q000032:analysis*
D052244:Endocrine Disruptors; D037742:Nanotubes, Carbon; D012987:Soil; D012989:Soil Pollutants; D014274:Trifluralin