scholarly journals Cover Feature: Catalytic Chemosensing Assay for Selective Detection of Methyl Parathion Organophosphate Pesticide (Chem. Eur. J. 41/2019)

2019 ◽  
Vol 25 (41) ◽  
pp. 9549-9549
Author(s):  
Anxun Zheng ◽  
Chang Shen ◽  
Qian Tang ◽  
Cheng‐Bin Gong ◽  
Cheuk‐Fai Chow
Keyword(s):  
Methyl Parathion ◽  
Selective Detection ◽  
Organophosphate Pesticide

Catalytic Chemosensing Assay for Selective Detection of Methyl Parathion Organophosphate Pesticide

2019 ◽  
Vol 25 (41) ◽  
pp. 9643-9649 ◽  
Author(s):  
Anxun Zheng ◽  
Chang Shen ◽  
Qian Tang ◽  
Cheng‐Bin Gong ◽  
Cheuk‐Fai Chow
Keyword(s):  
Methyl Parathion ◽  
Selective Detection ◽  
Organophosphate Pesticide

Collaborative Study of the Ethyl Acetate Extraction, Sweep Co-distillation Cleanup, and GLC Determination, Using Six Parent Organophosphate Pesticides

1968 ◽  
Vol 51 (3) ◽  
pp. 662-665 ◽  
Author(s):  
R W Storherr ◽  
R R Watts
Keyword(s):  
Ethyl Acetate ◽  
Pesticide Residues ◽  
Methyl Parathion ◽  
Collaborative Study ◽  
Organophosphate Pesticides ◽  
Organophosphate Pesticide ◽  
Specific Group

Abstract Nine chemists in five laboratories collaborated in testing the combined rapid ethyl acetate extraction and sweep co-distillation cleanup method for multiple organophosphate pesticide residues in crops. Pesticides were detected by GLC with the potassium thermionic detector. The six pesticides studied were Diazinon, methyl parathion, malathion, parathion, ethion, and carbophenothion. Six crops—kale, carrots, lettuce, apples, potatoes, and strawberries—were divided into three groups, and each laboratory was selected to work with a specific group. With unknown fortification levels of 1.0 and 0.5 ppm, the collaborators obtained recoveries of 90+% at each level.

MoS2 quantum-dots as a label-free fluorescent nanoprobe for the highly selective detection of methyl parathion pesticide

2017 ◽  
Vol 9 (4) ◽  
pp. 716-723 ◽  
Author(s):  
Nafiseh Fahimi-Kashani ◽  
Ali Rashti ◽  
M. Reza Hormozi-Nezhad ◽  
Vahideh Mahdavi
Keyword(s):  
Quantum Dots ◽  
Methyl Parathion ◽  
Fluorescence Method ◽  
Selective Detection ◽  
Label Free ◽  
Fluorescent Nanoprobe

A reliable, simple, and sensitive fluorescence method was developed for the determination of methyl parathion (MP) in rice using MoS2 quantum dots (QDs).

scholarly journals 3D Sphere-like Nickel Tungstate Catalyst for Destroying of Organophosphate Pesticide Methyl Parathion

2019 ◽  
Vol 9 (1S3) ◽  
pp. 216-219
Keyword(s):  
Visible Light ◽  
Visible Light Irradiation ◽  
Pesticide Residues ◽  
Methyl Parathion ◽  
Light Irradiation ◽  
Spectroscopic Techniques ◽  
Organophosphate Pesticide ◽  
Precipitation Technique ◽  
Living Organisms ◽  
First Time

Recently, the appearance of pesticide residues into the environment poses serious risks to the living organisms. In this view, we explored a novel and superior photocatalyst based on nanostructured sphere-like nickel tungstate (NiWO4 NSs) for the degradation of organophosphate pesticide methyl parathion (MP) under visible light irradiation, for the first time. The NiWO4 NSs were tailored through simple precipitation technique and confirmed by several spectroscopic techniques. Fascinatingly, the NiWO4 NSs portrayed superior photodegradation performances towards MP degradation with superior stability.

AN ELECTRODE MODIFIED WITH AuNPs/GRAPHENE NANOCOMPOSITES FILM FOR THE DETERMINATION OF METHYL PARATHION RESIDUES

NANO ◽  
2014 ◽  
Vol 09 (08) ◽  
pp. 1450096 ◽  
Author(s):  
YALI MAO ◽  
HUANBAO FA ◽  
YANMEI CHENG ◽  
YANQIU DU ◽  
WEI YIN ◽  
...  
Keyword(s):  
Electron Microscopy ◽  
Methyl Parathion ◽  
Selective Detection ◽  
Oxidation Peak ◽  
High Adsorption ◽  
Graphene Nanocomposites ◽  
Transmission Electron ◽  
Optimized Conditions ◽  
Interference Studies

A novel sensitive and elective electrochemical sensor was developed to detect methyl parathion (MP) based on a glassy carbon electrode (GCE) modified with gold nanoparticles ( AuNPs )/graphene nanocomposites film. The AuNPs were modified onto graphene sheets using NaBH 4 as a reductant. The obtained AuNPs /graphene nanocomposites were characterized by scanning electron microscopy (SEM) and transmission electron microscopy (TEM). The electrochemical behavior of MP and interference studies were then investigated. Compared with metal ions and nitroaromatic compounds, which exist in environmental samples, the AuNPs /graphene/GCE exhibited high adsorption and strong affinity toward MP. Under optimized conditions, the oxidation peak current of MP was linear to its concentration within the range of 4.0 × 10-7–8.0 × 10-5 M, with a detection limit ( S/N = 3) of 8.5 × 10-8 M. These results indicated that the AuNPs /graphene nanocomposites displayed a synergic effect involving the catalytic characteristics of graphene and AuNPs nanocomposites, which can effectively improve the electrochemical properties of MP. Furthermore, the AuNPs also enhanced sensor sensitivity to MP. Therefore, the AuNPs /graphene/GCE could be a promising sensor for the fast, sensitive and selective detection of MP in real samples.

Highly selective detection of an organophosphorus pesticide, methyl parathion, using Ag–ZnO–SWCNT based field-effect transistors

2020 ◽  
Vol 8 (26) ◽  
pp. 8864-8875
Author(s):  
T. H. Vignesh Kumar ◽  
Suresh Kumar Raman Pillai ◽  
Mary B. Chan-Park ◽  
Ashok K. Sundramoorthy
Keyword(s):  
Field Effect ◽  
Methyl Parathion ◽  
Field Effect Transistors ◽  
Organophosphorus Pesticide ◽  
Soil Samples ◽  
Selective Detection

We reported a new non-enzymatic Ag–ZnO/s-SWCNT–FET based sensor for the selective detection of methyl parathion (MP) in rice and soil samples by using IDS–VGS.

A Sweep Co-distillation Cleanup Method for Organophosphate Pesticides.

1965 ◽  
Vol 48 (6) ◽  
pp. 1154-1158
Author(s):  
R W Storherr ◽  
R R Watts
Keyword(s):  
Column Chromatography ◽  
Pesticide Residues ◽  
Methyl Parathion ◽  
Organophosphate Pesticides ◽  
Organophosphate Pesticide ◽  
Distillation Method ◽  
Adsorption Column ◽  
Column Method ◽  
Better Than

Abstract A simple sweep co-distillation method which uses the Storherr tube was developed for cleanup of 2 g or less of crude crop extracts which contain organophosphate pesticide residues. Five crops (kale, carrots, apples, strawberries, and potatoes) were fortified at levels of 1.0, 0.5, and 0.1 ppm with a mixture containing Trithion, diazinon, malathion, methyl parathion, and parathion. The sweep co-distillation method was compared with the adsorption column method by use of this mixture. The range of average per cent recoveries were 89–101% and 83–96%, respectively. The cleanup required approximately 20 minutes per sample and was as good as, and in many cases better than, adsorption column chromatography. Detection of the organophosphate pesticides was performed by GLC with the thermionic detector.

scholarly journals Bioconcentration and Acute Intoxication of Brazilian Freshwater Fishes by the Methyl Parathion Organophosphate Pesticide

2015 ◽  
Vol 2015 ◽  
pp. 1-9 ◽  
Author(s):  
João Bosco de Salles ◽  
Renato Matos Lopes ◽  
Cristiane M. C. de Salles ◽  
Vicente P. F. Cassano ◽  
Manildo Marcião de Oliveira ◽  
...  
Keyword(s):  
Brain Tissue ◽  
Methyl Parathion ◽  
Tap Water ◽  
Freshwater Fishes ◽  
The Other ◽  
Organophosphate Pesticide ◽  
Ache Inhibition ◽  
Prochilodus Lineatus ◽  
Piaractus Mesopotamicus ◽  
Brain Ache

Three species of freshwater Brazilian fishes (pacu,Piaractus mesopotamicus; piavussu,Leporinus macrocephalus, and curimbatá,Prochilodus lineatus) were exposed to an acute dose of 5 ppm methyl parathion organophosphate pesticide. Three to five individuals per species were exposed, one at a time, to 40 liters tap water spiked with Folidol 600. Pesticide concentrations and cholinesterase (ChE) activities were evaluated in serum, liver, brain, heart, and muscle. The bioconcentration of methyl parathion was similar for all studied fishes. Brain tissue showed the highest pesticide concentration, reaching 80 ppm after exposure for 30 min to methyl parathion. Three to 5 hours of 5 ppm methyl parathion exposure provoked the death of allP. lineatusat 92% brain AChE inhibition, whereas fish from the other two species survived for up to 78 hours with less than 80% brain AChE inhibition. Our results indicate that acute toxic effects of methyl parathion to fish are correlated with brain AChE sensitivity to methyl paraoxon.

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