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Development of an analytical method for analysis of flubendiamide, des-iodo flubendiamide and study of their residue persistence in tomato and soil

Mohapatra, S ; Ahuja, A.K ; Deepa, M ; Jagadish, G.K ; Rashmi, N ; Sharma, D

Journal of environmental science and health. Part B, Pesticides, food contaminants, and agricultural wastes, 2011-01, Vol.46 (3), p.264-271 [Periódico revisado por pares]

Philadelphia, PA: Marcel Dekker

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Título:
Development of an analytical method for analysis of flubendiamide, des-iodo flubendiamide and study of their residue persistence in tomato and soil
Autor: Mohapatra, S ; Ahuja, A.K ; Deepa, M ; Jagadish, G.K ; Rashmi, N ; Sharma, D
Assuntos: acetates ; acetonitrile ; Acetonitriles - chemistry ; active ingredients ; Agronomy. Soil science and plant productions ; aluminum oxide ; Animal, plant and microbial ecology ; Applied ecology ; Benzamides - analysis ; Benzamides - chemistry ; Benzamides - metabolism ; Biological and medical sciences ; Chromatography, High Pressure Liquid ; Control ; Des-iodo flubendiamide ; flubendiamide ; fruits ; Fundamental and applied biological sciences. Psychology ; half life ; high performance liquid chromatography ; insecticides ; Insecticides - analysis ; Insecticides - chemistry ; Insecticides - metabolism ; Lepidoptera ; Lycopersicon esculentum ; Lycopersicon esculentum - chemistry ; Lycopersicon esculentum - metabolism ; metabolites ; persistence ; Pesticide Residues - analysis ; Pesticide Residues - chemistry ; Pesticide Residues - metabolism ; pests ; Phytopathology. Animal pests. Plant and forest protection ; Protozoa. Invertebrates ; residue ; soil ; Soil - chemistry ; Soil Pollutants - analysis ; Soil Pollutants - chemistry ; Soil Pollutants - metabolism ; Sulfones - analysis ; Sulfones - chemistry ; Sulfones - metabolism ; tomato ; tomatoes ; wavelengths
É parte de: Journal of environmental science and health. Part B, Pesticides, food contaminants, and agricultural wastes, 2011-01, Vol.46 (3), p.264-271
Notas: http://dx.doi.org/10.1080/03601234.2011.540536
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Descrição: Flubendiamide is a new insecticide that has been found to give excellent control of lepidopterous pests of tomato. This study has been undertaken to develop an improved method for analysis of flubendiamide and its metabolite des-iodo flubendiamide and determine residue retention in tomato and soil. The analytical method developed involved extraction of flubendiamide and its metabolite des-iodo flubendiamide with acetonitrile, liquid-liquid partitioning into hexane-ethyl acetate mixture (6:4, v v-1) and cleanup with activated neutral alumina. Finally the residues were dissolved in gradient high pressure liquid chromatography (HPLC) grade acetonitrile for analysis by HPLC. The mobile phase, acetonitrile-water at 60:40 (v v-1) proportion and the wavelength of 235 nm gave maximum peak resolution. Using the above method and HPLC parameters described, nearly 100 % recovery of both insecticides were obtained. There was no matrix interference and the limit of quantification (LOQ) of the method was 0.01 mg kg-1. Initial residue deposits of flubendiamide on field-treated tomato from treatments @ 48 and 96 g active ingredient hectare-1 were 0.83 and 1.68 mg kg-1,respectively. The residues of flubendiamide dissipated at the half-life of 3.9 and 4.4 days from treatments @ 48 and 96 g a.i. ha-1, respectively and persisted for 15 days from both the treatments. Des-iodo flubendiamide was not detected in tomato fruits at any time during the study period. Residues of flubendiamide and des-iodo flubendiamide in soil from treatment @ 48 and 96 g a.i. ha-1 were below detectable level (BDL, < 0.01 mg kg-1) after 20 days. Flubendiamide completely dissipated from tomato within 20 days when the 480 SC formulation was applied at doses recommended for protection against lepidopterous pests.
Editor: Philadelphia, PA: Marcel Dekker
Idioma: Inglês

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Development of an analytical method for analysis of flubendiamide, des-iodo flubendiamide and study of their residue persistence in tomato and soil

Mohapatra, S ; Ahuja, A.K ; Deepa, M ; Jagadish, G.K ; Rashmi, N ; Sharma, D

Philadelphia, PA: Marcel Dekker

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