Dual fluorescence and electrochemical detection of the organophosphorus pesticides—Ethion, malathion and fenthion

Guo, Wenjuan; Engelman, Brigitte J.; Haywood, Tajay L.; Blok, Neil B.; Beaudoin, Daniel S.; Obare, Sherine O.

doi:10.1016/j.talanta.2011.10.015

Cited by 46 publications

(28 citation statements)

References 33 publications

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“…Vasimalai and John used chitosan-capped AgNPs as fluorophore probe to detect malathion in the range of 1 nM to 10 pM with an LOD of 94 fM based on aggregation of AgNPs, and they tested the assay in polluted lake water, grape, and mango samples [17]. In another approach, Guo et al utilized a highly conjugated phenanthroline derivative, which showed high fluorescence quantum yield for developing a dual mode (fluorescent and electrochemical) sensor for OP detection with an LOD of 1 nM [18].…”

Section: Introductionmentioning

confidence: 99%

Acetylcholinesterase inhibition-based ultrasensitive fluorometric detection of malathion using unmodified silver nanoparticles

Kumar

Alex

Rajendran

et al. 2015

Colloids and Surfaces A: Physicochemical and Engineering Aspect

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Section: Introductionmentioning

confidence: 99%

Acetylcholinesterase inhibition-based ultrasensitive fluorometric detection of malathion using unmodified silver nanoparticles

Kumar

Alex

Rajendran

et al. 2015

Colloids and Surfaces A: Physicochemical and Engineering Aspect

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“…As a result, graphene oxides are very popular in electrochemistry [22] and sensor production [23]. Other methods are based on molecularly imprinted polymer cartridges coupled to high performance liquid chromatography [4] or electrochemical methods: square-wave adsorptive-stripping [9] or differential pulse voltammetry [8]. Other methods are based on molecularly imprinted polymer cartridges coupled to high performance liquid chromatography [4] or electrochemical methods: square-wave adsorptive-stripping [9] or differential pulse voltammetry [8].…”

Section: Fenthion (Fnt) [Oo-dimethyl-o-[3-methyl-4-(methylthio)phenymentioning

confidence: 99%

“…Remnants of pesticides are harmful to human health due to their potential mutagenicity, carcinogenicity, cytotoxicity, and reproductive toxicity, so almost all countries have regulatory authorities that monitor them [5,6]. Depending on their chemical structure and climatic conditions [4], organophosphorus pesticides may remain and accumulate in the environment for months and poison thousands of humans across the world each year [8]. Depending on their chemical structure and climatic conditions [4], organophosphorus pesticides may remain and accumulate in the environment for months and poison thousands of humans across the world each year [8].…”

Section: Introductionmentioning

confidence: 99%

Comparative Study on Electroanalysis of Fenthion Using Silver Amalgam Film Electrode and Glassy Carbon Electrode Modified with Reduced Graphene Oxide

et al. 2017

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Oxidation and reduction processes of the insecticide fenthion was comparatively investigated at a reduced graphene oxide modified glassy carbon electrode (RGO‐GCE) and a cyclic renewable silver amalgam film electrode (Hg(Ag)FE) using square wave stripping voltammetry (SWSV). The influence of pH and SW parameters was investigated. The linear concentration ranges were found to be 1 × 10−6 – 2 × 10−5 and 1 × 10−7 – 2 × 10−5 mol L−1 for Hg(Ag)FE and RGO‐GCE, respectively. The detection and quantification limits were calculated as 1.3 × 10−7 and 4.5 × 10−7 mol L−1 for Hg(Ag)FE and 7.6 × 10−9 and 2.5 × 10−8 mol L−1 for RGO‐GCE. Both of the developed electroanalytical methods offer rapid and simple detection of fenthion and were used on spiked tap and river water and apple juice samples. Scanning electron microscopy was used for RGO‐GCE surface characterization.

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“…The products were characterized by 1 H and 13 C NMR and found to be pure. Phenol was deposited on top of the sensor surface as the sensitive layer for Hg 2+ detection and QDPPZ for Ni 2+ [22][23][24][25].…”

Section: Synthesis Of the Chemical Sensing Layermentioning

confidence: 99%

SH-SAW-based sensor for heavy metal ion detection

Ramshani

Narakathu

Reddy

et al. 2015

2015 Joint Conference of the IEEE International Frequency Control Symposium &Amp; The European Frequency and Time Forum

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In this study, a shear horizontal mode surface acoustic wave (SH-SAW) sensor, was designed and fabricated for the detection of heavy metals. The SH-SAW sensor was photolithographically fabricated by patterning gold (Au) interdigitated electrodes (IDE) and reflectors on the surface of a 64° YX-LiNbO 3 based piezoelectric substrate. A flow cell, with a reservoir volume of 3 µl, which employs inlet and outlet ports for the microfluidic chamber and polydimethylsiloxane (PDMS) based microfluidic channels, was also designed and fabricated using acrylic material. Phenol and naphtho[2,3-a]dipyrido[3,2-h:2'3'-f] phenazine-5,18-dione (QDPPZ) were employed as the sensing layers for mercury and nickel ions, respectively. The frequency based response of the SH-SAW sensor demonstrated picomolar level detection for mercury nitrate (Hg(NO 3 ) 2 ) and nickel nitrate (Ni(NO 3 ) 2 ).

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Dual fluorescence and electrochemical detection of the organophosphorus pesticides—Ethion, malathion and fenthion

Cited by 46 publications

References 33 publications

Acetylcholinesterase inhibition-based ultrasensitive fluorometric detection of malathion using unmodified silver nanoparticles

Acetylcholinesterase inhibition-based ultrasensitive fluorometric detection of malathion using unmodified silver nanoparticles

Comparative Study on Electroanalysis of Fenthion Using Silver Amalgam Film Electrode and Glassy Carbon Electrode Modified with Reduced Graphene Oxide

SH-SAW-based sensor for heavy metal ion detection

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