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.
Key Laboratory of Environmentally Friendly Chemistry and Applications of Ministry of Education, College of Chemistry, Xiangtan University, Xiangtan, Hunan 411105, PR China.
Xiaoqin
X
Wen
Junjie
J
Fei
Xiaoming
X
Chen
Lanhua
L
Yi
Fang
F
Ge
Meihua
M
Huang
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