Efficient Electrochemical Sensor Based on Multi-Walled Carbon Nanotubes/Gold Nanocomposite for Detection of Dichlorvos Pesticide in Agricultural Food

Chen, Yi

doi:10.20964/2021.03.53

Cited by 7 publications

(1 citation statement)

References 41 publications

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“…Based on toxicology studies, the World Health Organization listed dichlorvos as a highly toxic organophosphorus pesticide, showing serious health effects on humans [39,40]. In view of this, several countries have focused on the detection of trace-level pesticide residues, including dichlorvos, using various analytical approaches such as mass spectrometry (MS), high-performance liquid chromatography, colorimetry, fluorescence spectrometry and gas chromatography-MS (GC-MS), respectively [8,38,[41][42][43]. Despite the potential application in assaying pesticides, some analytical techniques are known to be sophisticated and time consuming and need complicated sample preparations.…”

Section: Introductionmentioning

confidence: 99%

Synthesis of copper nanoclusters from Bacopa monnieri leaves for fluorescence sensing of dichlorvos

Sadhu,

Jha,

Park

et al. 2023

Luminescence

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In this work, a facile one‐step green synthesis is developed for the fabrication of blue fluorescent copper nanocluster (Brahmi‐CuNCs) from the extract of Bacopa monnieri (common name is Brahmi) via microwave method. The as‐prepared Brahmi‐CuNCs emit blue fluorescence at 452 nm when excited at 352 nm and show a quantum yield of 31.32%. Brahmi‐derived blue fluorescent CuNCs acted as a probe for fluorescence sensing of dichlorvos. Upon the addition of dichlorvos, blue emission of Brahmi‐CuNCs is gradually turned‐off, favoring to establish calibration graph in the range of 0.5‐100 μM with a detection limit of 0.23 μM, respectively. The as‐synthesized Brahmi‐CuNCs exhibited remarkable sensitivity and selectivity toward dichlorvos, offering to assay dichlorvos in various samples (cabbage, apple juice, and rice).

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Section: Introductionmentioning

confidence: 99%

Synthesis of copper nanoclusters from Bacopa monnieri leaves for fluorescence sensing of dichlorvos

Sadhu,

Jha,

Park

et al. 2023

Luminescence

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Electrochemical sensor development for detecting organophosphate pesticide using CuO nanograss electrode

Khuntia,

Kundu,

Mahapatra

2024

Can J Chem Eng

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In this work, copper oxide (CuO) nanograss (NGs) were synthesized on copper foil as electrodes through anodization and annealing processes. After the successful synthesis of the CuO NG electrode, it was characterized using field emission scanning electron microscopy (FESEM) and X‐ray diffraction (XRD) analysis. Anodization duration was optimized for NG synthesis and was found to be 20 min with the help of FESEM analysis. The synthesized electrodes were used to analyze the organophosphate pesticides (OPPs), namely ‘malathion’ and ‘chlorpyrifos’, in the absence and presence of interfering molecules using differential pulse voltammetry (DPV). The proposed sensor functions based on the current inhibition ratio. The parameters like pH, accumulation time, and ionic strength of supporting electrolyte were optimized to be 7 pH, 9 min, and 0.1 M potassium chloride (KCl), respectively, for determining the current inhibition ratio (ΔI/I0). The developed sensor was sensitive and selective, with limit of detection (LOD) as low as 1 ppb for both pesticides. The limit of quantification (LOQ) was 1 ppb for chlorpyrifos and 10 ppb for malathion. The sensor's selectivity was also studied by adding Pb(NO3)2, Zn(NO3)2, NiCl2, and carbendazim to a fixed malathion and chlorpyrifos concentration, and minimal interferences were observed in the detection of malathion and chlorpyrifos. The sensor's functionality was validated using an unknown concentration of malathion and chlorpyrifos in water and food samples with an average recovery of 95% when analyzed with the electrochemical method and high performance liquid chromatography (HPLC). The sensitivity of the electrochemical sensor for chlorpyrifos detection was found to be 0.6678 μA/ppb, and for malathion detection, it was found to be 1.139 μA/ppb.

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Hydrothermal Fabrication of Efficient Binary Pd/Ag2S Heterojunction Composites: Synthesis, Characterization, and Fluorometric Selective Sensing of Organophosphate Pesticides

Dhanalaxmi,

Balchander,

Sumalatha

et al. 2023

J Fluoresc

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Efficient Electrochemical Sensor Based on Multi-Walled Carbon Nanotubes/Gold Nanocomposite for Detection of Dichlorvos Pesticide in Agricultural Food

Cited by 7 publications

References 41 publications

Synthesis of copper nanoclusters from Bacopa monnieri leaves for fluorescence sensing of dichlorvos

Synthesis of copper nanoclusters from Bacopa monnieri leaves for fluorescence sensing of dichlorvos

Electrochemical sensor development for detecting organophosphate pesticide using CuO nanograss electrode

Hydrothermal Fabrication of Efficient Binary Pd/Ag2S Heterojunction Composites: Synthesis, Characterization, and Fluorometric Selective Sensing of Organophosphate Pesticides

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