Non-Enzymatic Electrochemical Sensing of Malathion Pesticide in Tomato and Apple Samples Based on Gold Nanoparticles-Chitosan-Ionic Liquid Hybrid Nanocomposite
Malathion (MLT) is an organophosphorous type pesticide and having seriously high toxicity and electrochemical platforms for rapid, simple, inexpensive and sensitive determination of pesticides is still a special concern. This paper describes a simple preparation of a composite film consisting of ion...
| Main Authors: | , |
|---|---|
| Format: | Article |
| Language: | English |
| Published: |
MDPI AG
2018-03-01
|
| Series: | Sensors |
| Subjects: | |
| Online Access: | http://www.mdpi.com/1424-8220/18/3/773 |
| _version_ | 1811185867999412224 |
|---|---|
| author | Gulcin Bolat Serdar Abaci |
| author_facet | Gulcin Bolat Serdar Abaci |
| author_sort | Gulcin Bolat |
| collection | DOAJ |
| description | Malathion (MLT) is an organophosphorous type pesticide and having seriously high toxicity and electrochemical platforms for rapid, simple, inexpensive and sensitive determination of pesticides is still a special concern. This paper describes a simple preparation of a composite film consisting of ionic liquid (IL), chitosan (CS) and electrochemically synthesized gold nanoparticles (AuNPs) on single use pencil graphite electrodes (PGEs). The microscopic and electrochemical characterization of AuNP-CS-IL/PGE was studied using scanning electron microscopy, cyclic voltammetry and electrochemical impedance spectroscopy. This fabricated surface was then explored for the first time as a sensing matrix for the non-enzymatic electrochemical sensing of malathion by cyclic voltammetry and square wave voltammetry measurements. The proposed AuNP-CS-IL/PGE showed excellent characteristics and possessed remarkable affinity for malathion. The voltammetric current response exhibited two linear dynamic ranges, 0.89–5.94 nM and 5.94–44.6 nM reflecting two binding sites, with a detection limit of 0.68 nM. The method was applied in real sample analysis of apple and tomato. The results demonstrate the feasibility of AuNP-CS-IL-modified electrodes for simple, fast, ultrasensitive and inexpensive detection of MLT. |
| first_indexed | 2024-04-11T13:37:43Z |
| format | Article |
| id | doaj.art-7a2f03b5e5e64550a26e948c38638ea1 |
| institution | Directory Open Access Journal |
| issn | 1424-8220 |
| language | English |
| last_indexed | 2024-04-11T13:37:43Z |
| publishDate | 2018-03-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Sensors |
| spelling | doaj.art-7a2f03b5e5e64550a26e948c38638ea12022-12-22T04:21:26ZengMDPI AGSensors1424-82202018-03-0118377310.3390/s18030773s18030773Non-Enzymatic Electrochemical Sensing of Malathion Pesticide in Tomato and Apple Samples Based on Gold Nanoparticles-Chitosan-Ionic Liquid Hybrid NanocompositeGulcin Bolat0Serdar Abaci1Department of Chemistry, Faculty of Science, Hacettepe University, 06800 Beytepe-Ankara, TurkeyDepartment of Chemistry, Faculty of Science, Hacettepe University, 06800 Beytepe-Ankara, TurkeyMalathion (MLT) is an organophosphorous type pesticide and having seriously high toxicity and electrochemical platforms for rapid, simple, inexpensive and sensitive determination of pesticides is still a special concern. This paper describes a simple preparation of a composite film consisting of ionic liquid (IL), chitosan (CS) and electrochemically synthesized gold nanoparticles (AuNPs) on single use pencil graphite electrodes (PGEs). The microscopic and electrochemical characterization of AuNP-CS-IL/PGE was studied using scanning electron microscopy, cyclic voltammetry and electrochemical impedance spectroscopy. This fabricated surface was then explored for the first time as a sensing matrix for the non-enzymatic electrochemical sensing of malathion by cyclic voltammetry and square wave voltammetry measurements. The proposed AuNP-CS-IL/PGE showed excellent characteristics and possessed remarkable affinity for malathion. The voltammetric current response exhibited two linear dynamic ranges, 0.89–5.94 nM and 5.94–44.6 nM reflecting two binding sites, with a detection limit of 0.68 nM. The method was applied in real sample analysis of apple and tomato. The results demonstrate the feasibility of AuNP-CS-IL-modified electrodes for simple, fast, ultrasensitive and inexpensive detection of MLT.http://www.mdpi.com/1424-8220/18/3/773malathiongold nanoparticlesionic liquidsorganophosphorus (OP) pesticidesfood safetyelectrochemical sensordirect electrochemical detection |
| spellingShingle | Gulcin Bolat Serdar Abaci Non-Enzymatic Electrochemical Sensing of Malathion Pesticide in Tomato and Apple Samples Based on Gold Nanoparticles-Chitosan-Ionic Liquid Hybrid Nanocomposite Sensors malathion gold nanoparticles ionic liquids organophosphorus (OP) pesticides food safety electrochemical sensor direct electrochemical detection |
| title | Non-Enzymatic Electrochemical Sensing of Malathion Pesticide in Tomato and Apple Samples Based on Gold Nanoparticles-Chitosan-Ionic Liquid Hybrid Nanocomposite |
| title_full | Non-Enzymatic Electrochemical Sensing of Malathion Pesticide in Tomato and Apple Samples Based on Gold Nanoparticles-Chitosan-Ionic Liquid Hybrid Nanocomposite |
| title_fullStr | Non-Enzymatic Electrochemical Sensing of Malathion Pesticide in Tomato and Apple Samples Based on Gold Nanoparticles-Chitosan-Ionic Liquid Hybrid Nanocomposite |
| title_full_unstemmed | Non-Enzymatic Electrochemical Sensing of Malathion Pesticide in Tomato and Apple Samples Based on Gold Nanoparticles-Chitosan-Ionic Liquid Hybrid Nanocomposite |
| title_short | Non-Enzymatic Electrochemical Sensing of Malathion Pesticide in Tomato and Apple Samples Based on Gold Nanoparticles-Chitosan-Ionic Liquid Hybrid Nanocomposite |
| title_sort | non enzymatic electrochemical sensing of malathion pesticide in tomato and apple samples based on gold nanoparticles chitosan ionic liquid hybrid nanocomposite |
| topic | malathion gold nanoparticles ionic liquids organophosphorus (OP) pesticides food safety electrochemical sensor direct electrochemical detection |
| url | http://www.mdpi.com/1424-8220/18/3/773 |
| work_keys_str_mv | AT gulcinbolat nonenzymaticelectrochemicalsensingofmalathionpesticideintomatoandapplesamplesbasedongoldnanoparticleschitosanionicliquidhybridnanocomposite AT serdarabaci nonenzymaticelectrochemicalsensingofmalathionpesticideintomatoandapplesamplesbasedongoldnanoparticleschitosanionicliquidhybridnanocomposite |