title: A facile graphene oxide based sensor for electrochemical detection of neonicotinoids.
abstract: The increasing use of neonicotinoids in systematic seed treatment to crops is a serious cause of pollution of water resources and environment. Consequently, food sources can get eventually contaminated. To this end, it is desirable to develop suitable and effective platforms in order to obtain low-cost and sensitive sensors for neonicotinoids detection. In this work, graphene oxide modified electrodes were used as highly efficient electrochemical sensors for detection of two common insecticides - thiamethoxam and imidacloprid. The proposed sensor responded linearly in the concentration range of 10-200µmolL-1for both analytes and the detection limits were determined as low as 8.3µmolL-1and 7.9µmolL-1for thiamethoxam and imidacloprid, respectively. Analytical performance was also evaluated on spiked water and honey samples.
authors.affiliation: Regional Centre of Advanced Technologies and Materials, Department of Physical Chemistry, Faculty of Science, Palacký University in Olomouc, 17. listopadu 1192/12, 77146 Olomouc, Czech Republic.
authors.forename: Veronika
authors.initials: V
authors.lastname: Urbanová
authors.affiliation: Regional Centre of Advanced Technologies and Materials, Department of Physical Chemistry, Faculty of Science, Palacký University in Olomouc, 17. listopadu 1192/12, 77146 Olomouc, Czech Republic.
authors.forename: Aristides
authors.initials: A
authors.lastname: Bakandritsos
authors.affiliation: Regional Centre of Advanced Technologies and Materials, Department of Physical Chemistry, Faculty of Science, Palacký University in Olomouc, 17. listopadu 1192/12, 77146 Olomouc, Czech Republic.
authors.forename: Petr
authors.initials: P
authors.lastname: Jakubec
authors.affiliation: Department of Physical Chemistry and Materials Science, University of Szeged, Aradi vt. 1, H-6720, Szeged, Hungary.
authors.forename: Tamás
authors.initials: T
authors.lastname: Szambó
authors.affiliation: Regional Centre of Advanced Technologies and Materials, Department of Physical Chemistry, Faculty of Science, Palacký University in Olomouc, 17. listopadu 1192/12, 77146 Olomouc, Czech Republic. Electronic address: radek.zboril@upol.cz.
authors.forename: Radek
authors.initials: R
authors.lastname: Zbořil
mesh_terms: D015374:Biosensing Techniques / Q000191:economics / Q000379:methods; D055664:Electrochemical Techniques / Q000191:economics / Q000379:methods*; D004566:Electrodes; D004784:Environmental Monitoring / Q000191:economics / Q000379:methods; D005504:Food Analysis / Q000191:economics / Q000379:methods; D005506:Food Contamination / Q000032:analysis; D006108:Graphite / Q000737:chemistry*; D006722:Honey / Q000032:analysis*; D007093:Imidazoles / Q000032:analysis*; D007306:Insecticides / Q000032:analysis*; D057230:Limit of Detection; D000073943:Neonicotinoids; D009574:Nitro Compounds / Q000032:analysis*; D010078:Oxazines / Q000032:analysis*; D010087:Oxides / Q000737:chemistry; D045483:Rivers / Q000737:chemistry; D000077922:Thiamethoxam; D013844:Thiazoles / Q000032:analysis*; D014874:Water Pollutants, Chemical / Q000032:analysis*
chemical_list: D007093:Imidazoles; D007306:Insecticides; D000073943:Neonicotinoids; D009574:Nitro Compounds; D010078:Oxazines; D010087:Oxides; D013844:Thiazoles; D014874:Water Pollutants, Chemical; C082359:imidacloprid; D000077922:Thiamethoxam; D006108:Graphite
keywords: Graphene oxide; Imidacloprid; Neonicotinoids; Thiamethoxam; Voltammetry