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Shrivas K, Sahu S, Sahu B, Kurrey R, Patle TK, Kant T, Karbhal I, Satnami ML, Deb MK, Ghosh KK. Silver nanoparticles for selective detection of phosphorus pesticide containing π-conjugated pyrimidine nitrogen and sulfur moieties through non-covalent interactions. J Mol Liq 2019. [DOI: 10.1016/j.molliq.2018.11.071] [Citation(s) in RCA: 18] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/27/2022]
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Molecularly imprinted polymer nanoparticles-based electrochemical sensor for determination of diazinon pesticide in well water and apple fruit samples. Anal Bioanal Chem 2016; 408:6769-79. [PMID: 27497964 DOI: 10.1007/s00216-016-9802-7] [Citation(s) in RCA: 57] [Impact Index Per Article: 7.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/19/2016] [Revised: 06/15/2016] [Accepted: 07/15/2016] [Indexed: 10/21/2022]
Abstract
In this research, an electrochemical sensor based on molecularly imprinted polymer (MIP) nanoparticles for selective and sensitive determination of diazinon (DZN) pesticides was developed. The nanoparticles of diazinon imprinted polymer were synthesized by suspension polymerization and then used for modification of carbon paste electrode (CPE) composition in order to prepare the sensor. Cyclic voltammetry (CV) and square wave voltammetry (SWV) methods were applied for electrochemical measurements. The obtained results showed that the carbon paste electrode modified by MIP nanoparticles (nano-MIP-CP) has much higher adsorption ability for diazinon than the CPE based non-imprinted polymer nanoparticles (nano-NIP-CP). Under optimized extraction and analysis conditions, the proposed sensor exhibited excellent sensitivity (95.08 μA L μmol(-1)) for diazinon with two linear ranges of 2.5 × 10(-9) to 1.0 × 10(-7) mol L(-1) (R (2) = 0.9971) and 1.0 × 10(-7) to 2.0 × 10(-6) mol L(-1) (R (2) = 0.9832) and also a detection limit of 7.9 × 10(-10) mol.L(-1). The sensor was successfully applied for determination of diaznon in well water and apple fruit samples with recovery values in the range of 92.53-100.86 %. Graphical abstract Procedure for preparation of electrochemical sensor based on MIP nanoparticles for determination of diazinon.
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Nejdl L, Ruttkay-Nedecky B, Kudr J, Kremplova M, Cernei N, Prasek J, Konecna M, Hubalek J, Zitka O, Kynicky J, Kopel P, Kizek R, Adam V. Behaviour of zinc complexes and zinc sulphide nanoparticles revealed by using screen printed electrodes and spectrometry. SENSORS 2013; 13:14417-37. [PMID: 24233071 PMCID: PMC3871106 DOI: 10.3390/s131114417] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 08/01/2013] [Revised: 09/03/2013] [Accepted: 10/08/2013] [Indexed: 01/08/2023]
Abstract
In this study, we focused on microfluidic electrochemical analysis of zinc complexes (Zn(phen)(his)Cl2, Zn(his)Cl2) and ZnS quantum dots (QDs) using printed electrodes. This method was chosen due to the simple (easy to use) instrumentation and variable setting of flows. Reduction signals of zinc under the strictly defined and controlled conditions (pH, temperature, flow rate, accumulation time and applied potential) were studied. We showed that the increasing concentration of the complexes (Zn(phen)(his)Cl2, Zn(his)Cl2) led to a decrease in the electrochemical signal and a significant shift of the potential to more positive values. The most likely explanation of this result is that zinc is strongly bound in the complex and its distribution on the electrode is very limited. Changing the pH from 3.5 to 5.5 resulted in a significant intensification of the Zn(II) reduction signal. The complexes were also characterized by UV/VIS spectrophotometry, chromatography, and ESI-QTOF mass spectrometry.
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Affiliation(s)
- Lukas Nejdl
- Department of Chemistry and Biochemistry, Faculty of Agronomy, Mendel University in Brno, Zemedelska 1, Brno CZ-613 00, Czech Republic; E-Mails: (L.N.); (B.-R.N.); (J.K.); (M.K.); (N.C.); (M.K.); (O.Z.)
- Central European Institute of Technology, Brno University of Technology, Technicka 3058/10, Brno CZ-616 00, Czech Republic; E-Mails: (J.P.); (J.H.); (P.K.); (R.K.)
| | - Branislav Ruttkay-Nedecky
- Department of Chemistry and Biochemistry, Faculty of Agronomy, Mendel University in Brno, Zemedelska 1, Brno CZ-613 00, Czech Republic; E-Mails: (L.N.); (B.-R.N.); (J.K.); (M.K.); (N.C.); (M.K.); (O.Z.)
- Central European Institute of Technology, Brno University of Technology, Technicka 3058/10, Brno CZ-616 00, Czech Republic; E-Mails: (J.P.); (J.H.); (P.K.); (R.K.)
| | - Jiří Kudr
- Department of Chemistry and Biochemistry, Faculty of Agronomy, Mendel University in Brno, Zemedelska 1, Brno CZ-613 00, Czech Republic; E-Mails: (L.N.); (B.-R.N.); (J.K.); (M.K.); (N.C.); (M.K.); (O.Z.)
| | - Monika Kremplova
- Department of Chemistry and Biochemistry, Faculty of Agronomy, Mendel University in Brno, Zemedelska 1, Brno CZ-613 00, Czech Republic; E-Mails: (L.N.); (B.-R.N.); (J.K.); (M.K.); (N.C.); (M.K.); (O.Z.)
| | - Natalia Cernei
- Department of Chemistry and Biochemistry, Faculty of Agronomy, Mendel University in Brno, Zemedelska 1, Brno CZ-613 00, Czech Republic; E-Mails: (L.N.); (B.-R.N.); (J.K.); (M.K.); (N.C.); (M.K.); (O.Z.)
- Central European Institute of Technology, Brno University of Technology, Technicka 3058/10, Brno CZ-616 00, Czech Republic; E-Mails: (J.P.); (J.H.); (P.K.); (R.K.)
| | - Jan Prasek
- Central European Institute of Technology, Brno University of Technology, Technicka 3058/10, Brno CZ-616 00, Czech Republic; E-Mails: (J.P.); (J.H.); (P.K.); (R.K.)
| | - Marie Konecna
- Department of Chemistry and Biochemistry, Faculty of Agronomy, Mendel University in Brno, Zemedelska 1, Brno CZ-613 00, Czech Republic; E-Mails: (L.N.); (B.-R.N.); (J.K.); (M.K.); (N.C.); (M.K.); (O.Z.)
- Central European Institute of Technology, Brno University of Technology, Technicka 3058/10, Brno CZ-616 00, Czech Republic; E-Mails: (J.P.); (J.H.); (P.K.); (R.K.)
| | - Jaromir Hubalek
- Central European Institute of Technology, Brno University of Technology, Technicka 3058/10, Brno CZ-616 00, Czech Republic; E-Mails: (J.P.); (J.H.); (P.K.); (R.K.)
| | - Ondrej Zitka
- Department of Chemistry and Biochemistry, Faculty of Agronomy, Mendel University in Brno, Zemedelska 1, Brno CZ-613 00, Czech Republic; E-Mails: (L.N.); (B.-R.N.); (J.K.); (M.K.); (N.C.); (M.K.); (O.Z.)
- Central European Institute of Technology, Brno University of Technology, Technicka 3058/10, Brno CZ-616 00, Czech Republic; E-Mails: (J.P.); (J.H.); (P.K.); (R.K.)
| | - Jindrich Kynicky
- Department of Geology and Pedology, Faculty of Forestry and Wood Technology, Mendel University in Brno, Zemedelska 1, Brno CZ-613 00, Czech Republic; E-Mail:
- Karel Englis College, Sujanovo Square 356/1, Brno CZ-602 00, Czech Republic
| | - Pavel Kopel
- Central European Institute of Technology, Brno University of Technology, Technicka 3058/10, Brno CZ-616 00, Czech Republic; E-Mails: (J.P.); (J.H.); (P.K.); (R.K.)
| | - Rene Kizek
- Central European Institute of Technology, Brno University of Technology, Technicka 3058/10, Brno CZ-616 00, Czech Republic; E-Mails: (J.P.); (J.H.); (P.K.); (R.K.)
| | - Vojtech Adam
- Department of Chemistry and Biochemistry, Faculty of Agronomy, Mendel University in Brno, Zemedelska 1, Brno CZ-613 00, Czech Republic; E-Mails: (L.N.); (B.-R.N.); (J.K.); (M.K.); (N.C.); (M.K.); (O.Z.)
- Central European Institute of Technology, Brno University of Technology, Technicka 3058/10, Brno CZ-616 00, Czech Republic; E-Mails: (J.P.); (J.H.); (P.K.); (R.K.)
- Author to whom correspondence should be addressed; E-Mail: ; Tel.: +420-545-133-350; Fax: +420-545-212-044
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