Results 151 to 160 of about 734 (166)
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Food Chemistry, 2013
This paper describes a comparison of the properties of the three versions of the QuEChERS method (quick, easy, cheap, effective, rugged and safe) - the original (unbuffered), acetate-buffered, and citrate-buffered methods - for the determination of fenobucarb residues in beef muscles via liquid chromatography-electrospray ionisation tandem mass ...
Jang, Jin +9 more
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This paper describes a comparison of the properties of the three versions of the QuEChERS method (quick, easy, cheap, effective, rugged and safe) - the original (unbuffered), acetate-buffered, and citrate-buffered methods - for the determination of fenobucarb residues in beef muscles via liquid chromatography-electrospray ionisation tandem mass ...
Jang, Jin +9 more
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Analytical Methods, 2017
This study describes a sensitive bio-electrochemical detection method for extensively used toxic organothiophosphate pesticides temephos and dimethoate, and organocarbamate fenobucarb, by employing a simple mediatorless cyclic voltammetric technique.
Himadri Borah +4 more
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This study describes a sensitive bio-electrochemical detection method for extensively used toxic organothiophosphate pesticides temephos and dimethoate, and organocarbamate fenobucarb, by employing a simple mediatorless cyclic voltammetric technique.
Himadri Borah +4 more
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Journal of Liquid Chromatography & Related Technologies, 1996
A rapid and sensitive procedure is described for the determination of the N-methylcarbamates pesticides, carbaryl, carbofuran and fenobucarb, by liquid chromatography. The pesticides are previously hydrolyzed, in a separate step, to their phenolic derivatives, which, after the separation in a high speed column in a time lower than 2.5 min, are detected
T. Galeano Díaz +3 more
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A rapid and sensitive procedure is described for the determination of the N-methylcarbamates pesticides, carbaryl, carbofuran and fenobucarb, by liquid chromatography. The pesticides are previously hydrolyzed, in a separate step, to their phenolic derivatives, which, after the separation in a high speed column in a time lower than 2.5 min, are detected
T. Galeano Díaz +3 more
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Talanta, 2018
An electrochemical screening assay for the detection of phenyl carbamates (i.e. carbaryl, carbofuran, isoprocarb and fenobucarb) was developed and applied to grains samples (i.e. durum wheat, soft wheat and maize). Nano carbon black (CB) was strategically employed to realize an effective, reproducible, fouling resistant, low cost, delocalisable screen ...
Della Pelle, Flavio +5 more
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An electrochemical screening assay for the detection of phenyl carbamates (i.e. carbaryl, carbofuran, isoprocarb and fenobucarb) was developed and applied to grains samples (i.e. durum wheat, soft wheat and maize). Nano carbon black (CB) was strategically employed to realize an effective, reproducible, fouling resistant, low cost, delocalisable screen ...
Della Pelle, Flavio +5 more
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Electroanalysis, 1997
AbstractA differential pulse voltammetric method for the determination of fenobucarb is proposed. This N‐methylcarbamate pesticide is hydrolyzed in alkaline medium (0.02 M NaOH during ten min), and the resulting product 2‐sec‐butylphenol is oxidized at the glassy carbon electrode giving rise to a peak at a potential near 750 mV (pH 3.5).
Kauffmann, Jean-Michel +4 more
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AbstractA differential pulse voltammetric method for the determination of fenobucarb is proposed. This N‐methylcarbamate pesticide is hydrolyzed in alkaline medium (0.02 M NaOH during ten min), and the resulting product 2‐sec‐butylphenol is oxidized at the glassy carbon electrode giving rise to a peak at a potential near 750 mV (pH 3.5).
Kauffmann, Jean-Michel +4 more
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Journal of Chromatography B, 2017
A modified quick, easy, cheap, effective, rugged, and safe (QuEChERS) extraction method coupled with liquid chromatography-electrospray ionization tandem mass spectrometry (LC-ESI+/MS-MS) was developed for quantification of fenobucarb residues in animal food products, such as porcine muscle, egg, and whole milk, and aquatic food products, such as eel ...
Zhang, Dan +10 more
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A modified quick, easy, cheap, effective, rugged, and safe (QuEChERS) extraction method coupled with liquid chromatography-electrospray ionization tandem mass spectrometry (LC-ESI+/MS-MS) was developed for quantification of fenobucarb residues in animal food products, such as porcine muscle, egg, and whole milk, and aquatic food products, such as eel ...
Zhang, Dan +10 more
openaire +3 more sources
Environmental Toxicology and Chemistry, 2006
AbstractWith the expansion of agricultural areas within the Mekong River Delta in Vietnam, a concurrent, dramatic increase has occurred in agrochemical usage. To date, little consideration has been given to the negative impacts of this agricultural activity on the aquatic resources of the region.
Van Cong, Nguyen +2 more
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AbstractWith the expansion of agricultural areas within the Mekong River Delta in Vietnam, a concurrent, dramatic increase has occurred in agrochemical usage. To date, little consideration has been given to the negative impacts of this agricultural activity on the aquatic resources of the region.
Van Cong, Nguyen +2 more
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Ecotoxicology, 2000
Effects of the insecticide fenobucarb on 2 mayfly species, Epeorus latifolium and Baetis thermicus, were examined in indoor model streams. Aqueous concentrations of fenobucarb residues in the model streams were 69–71% of its nominal level until 24 h, except at low concentrations (less than 2 μg l−1 in the water) in the water.
Mitsuru Tada, Shigehisa Hatakeyama
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Effects of the insecticide fenobucarb on 2 mayfly species, Epeorus latifolium and Baetis thermicus, were examined in indoor model streams. Aqueous concentrations of fenobucarb residues in the model streams were 69–71% of its nominal level until 24 h, except at low concentrations (less than 2 μg l−1 in the water) in the water.
Mitsuru Tada, Shigehisa Hatakeyama
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Environmental Science and Pollution Research, 2023
This study reports a liquid phase microextraction method based on binary extraction solvents, which were used to preconcentrate chlorbenside and fenobucarb from aqueous samples for determination by gas chromatography mass spectrometry. Parameters including the type, ratio, and volume of binary solvents, disperser solvent type and volume, and vortex ...
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This study reports a liquid phase microextraction method based on binary extraction solvents, which were used to preconcentrate chlorbenside and fenobucarb from aqueous samples for determination by gas chromatography mass spectrometry. Parameters including the type, ratio, and volume of binary solvents, disperser solvent type and volume, and vortex ...
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Environmental Science and Pollution Research, 2016
Organophosphates (e.g. chlorpyrifos ethyl) and carbamates (e.g. fenobucarb) are commonly used to control a wide range of pests in rice fields of the Mekong Delta in Vietnam. This study assesses the combined effect of chlorpyrifos ethyl (CPF) and fenobucarb (F), applied at concentrations used by rice farmers, on the brain acetylcholinesterase (AChE ...
Nguyen Thanh, Tam +2 more
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Organophosphates (e.g. chlorpyrifos ethyl) and carbamates (e.g. fenobucarb) are commonly used to control a wide range of pests in rice fields of the Mekong Delta in Vietnam. This study assesses the combined effect of chlorpyrifos ethyl (CPF) and fenobucarb (F), applied at concentrations used by rice farmers, on the brain acetylcholinesterase (AChE ...
Nguyen Thanh, Tam +2 more
openaire +2 more sources