title: A novel sensor for the detection of acetamiprid in vegetables based on its photocatalytic degradation compound.
abstract: An electrochemical method for the indirect determination of acetamiprid was studied, using titanium dioxide photocatalysts coupled with a carbon paste electrode. The cyclic voltammetric results indicated that the photocatalytic degradation compound of acetamiprid had electroactivity in neutral solutions. The amount of acetamiprid was further indirectly determined by differential pulse anodic stripping voltammetric analysis as a sensitive detection technique. The experimental parameters were optimized with regard to the photocatalytic degradation time, pH of buffer solution, accumulation potential and accumulation time. Under optimal conditions, the proposed electrochemical method could detect acetamiprid concentrations ranging from 0.01 to 2.0μM, with a detection limit (3S/N) of 0.2nM. Moreover, the proposed method displays excellent selectivity, good reproducibility, and acceptable operational stability and can be successfully applied to acetamiprid determination in vegetable samples with satisfying results.
authors.affiliation: College of Chemistry and Chemical Engineering, Yangzhou University, Yangzhou 225002, PR China; College of Chemical Engineering, Yangzhou Polytechnic Institute, Yangzhou 225127, PR China.
authors.forename: Dangqin
authors.initials: D
authors.lastname: Jin
authors.affiliation: College of Chemistry and Chemical Engineering, Yangzhou University, Yangzhou 225002, PR China.
authors.forename: Qin
authors.initials: Q
authors.lastname: Xu
authors.affiliation: College of Chemistry and Chemical Engineering, Yangzhou University, Yangzhou 225002, PR China; School of Textiles and Clothing, School of Chemistry and Chemical Engineering, Yancheng Institute of Technology, Yancheng 224051, PR China.
authors.forename: Liangyun
authors.initials: L
authors.lastname: Yu
authors.affiliation: College of Chemistry and Chemical Engineering, Yangzhou University, Yangzhou 225002, PR China; School of Textiles and Clothing, School of Chemistry and Chemical Engineering, Yancheng Institute of Technology, Yancheng 224051, PR China.
authors.forename: Airong
authors.initials: A
authors.lastname: Mao
authors.affiliation: College of Chemistry and Chemical Engineering, Yangzhou University, Yangzhou 225002, PR China. Electronic address: xyhu@yzu.edu.cn.
authors.forename: Xiaoya
authors.initials: X
authors.lastname: Hu
mesh_terms: D055664:Electrochemical Techniques / Q000379:methods*; D000073943:Neonicotinoids; D011725:Pyridines / Q000737:chemistry*; D014025:Titanium / Q000737:chemistry*; D014675:Vegetables / Q000737:chemistry*
chemical_list: D000073943:Neonicotinoids; D011725:Pyridines; C009495:titanium dioxide; C464485:acetamiprid; D014025:Titanium
keywords: 6-Chloronicotinic acid; Acetamiprid; Electrochemical sensor; Photocatalytic degradation; Titanium dioxide