title: A novel electrochemical sensor based on zirconia/ordered macroporous polyaniline for ultrasensitive detection of pesticides.
abstract: A simple and mild strategy was proposed to develop a novel electrochemical sensor based on zirconia/ordered macroporous polyaniline (ZrO2/OMP) and further used for the detection of methyl parathion (MP), one of the organophosphate pesticides (OPPs). Due to the strong affinity of phosphate groups with ZrO2 and the advantages of OMP such as high catalytic activity and good conductivity, the developed sensor showed a limit of detection as low as 2.28 × 10(-10) mol L(-1) (S/N = 3) by square-wave voltammograms, and good selectivity, acceptable reproducibility and stability. Most importantly, this novel sensor was successfully applied to detect MP in real samples of apple and cabbage. It is expected that this method has potential applications in electrochemical sensing platforms with simple, sensitive, selective and fast analysis.
authors.affiliation: Key Laboratory of Bioelectrochemistry & Environmental Analysis of Gansu Province, College of Chemistry & Chemical Engineering, Northwest Normal University, 730070, P. R. China. taaluxq@gmail.com.
authors.forename: Yonglan
authors.initials: Y
authors.lastname: Wang
authors.forename: Jun
authors.initials: J
authors.lastname: Jin
authors.forename: Caixia
authors.initials: C
authors.lastname: Yuan
authors.forename: Fan
authors.initials: F
authors.lastname: Zhang
authors.forename: Linlin
authors.initials: L
authors.lastname: Ma
authors.forename: Dongdong
authors.initials: D
authors.lastname: Qin
authors.forename: Duoliang
authors.initials: D
authors.lastname: Shan
authors.forename: Xiaoquan
authors.initials: X
authors.lastname: Lu
mesh_terms: D000814:Aniline Compounds / Q000737:chemistry*; D001937:Brassica / Q000737:chemistry; D055664:Electrochemical Techniques / Q000379:methods; D004566:Electrodes; D005506:Food Contamination / Q000032:analysis*; D007306:Insecticides / Q000032:analysis*; D027845:Malus / Q000737:chemistry; D008743:Methyl Parathion / Q000032:analysis*; D008863:Microspheres; D053761:Nanocomposites / Q000737:chemistry; D015203:Reproducibility of Results; D012822:Silicon Dioxide / Q000737:chemistry; D015040:Zirconium / Q000737:chemistry*
chemical_list: D000814:Aniline Compounds; D007306:Insecticides; C416807:polyaniline; D008743:Methyl Parathion; D012822:Silicon Dioxide; D015040:Zirconium; C028541:zirconium oxide