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Paramasivam M.,AINP on Pesticide Residue Laboratory | Paramasivam M.,Tamil Nadu Agricultural University | Banerjee H.,AINP on Pesticide Residue Laboratory
Bulletin of Environmental Contamination and Toxicology | Year: 2012

Residual dynamics of flubendiamide in three different types of soils were investigated under laboratory condition. Flubendiamide was applied at 5 and 10 lg g-1 for each soil and samples drawn periodically were analyzed on HPLC. The results showed that the degradation of flubendiamide in soils were followed first-order kinetics and its average half-lives in three kinds of soils were ranged from 37.62 to 60.21 days. The persistence of flubendiamide in soils significantly increased in the order of coastal soil[red and lateritic soil[new alluvial. © Springer Science+Business Media, LLC 2012.


Paramasivam M.,AINP on Pesticide Residue Laboratory | Paramasivam M.,Tamil Nadu Agricultural University | Banerjee H.,AINP on Pesticide Residue Laboratory
Bulletin of Environmental Contamination and Toxicology | Year: 2011

A sensitive and simple method for simultaneous analysis of flubendiamide and its metabolite desiodo flubendiamide in cabbage, tomato and pigeon pea has been developed. The residues were extracted with QuEChERS method followed by dispersive solid-phase extraction with primary secondary amine sorbent to remove co extractives, prior to analysis by HPLC coupled with UV-Vis detector. The recoveries of flubendiamide and desiodo flubendiamide were ranged from 85.1 to 98.5% and 85.9 to 97.1% respectively with relative standard deviations (RSD) less than 5% and sensitivity of 0.01 μg g -1. The method offers a less expensive and safer alternative to the existing residue analysis methods for vegetables. © 2011 Springer Science+Business Media, LLC.


Paramasivam M.,AINP on Pesticide Residue Laboratory | Paramasivam M.,Tamil Nadu Agricultural University | Banerjee H.,AINP on Pesticide Residue Laboratory
Bulletin of Environmental Contamination and Toxicology | Year: 2012

A method for residue analysis of flubendiamide and its metabolite desiodo flubendiamide was developed using high performance liquid chromatography. This method was then used to evaluate the residual level and dissipation rate of flubendiamide and desiodo flubendiamide in the tomato fruit. The half-life of flubendiamide in tomato fruit was 1.64 and 1.98 days in recommended and double of the recommended dose, respectively. Tomato fruit and soil samples analyzed on the 10th day after the last spray revealed that flubendiamide and its metabolite desiodo flubendiamide residues at below determination level (0.01 μg g -1) at either dose of application. © 2011 Springer Science+Business Media, LLC.


Paramasivam M.,AINP on Pesticide Residue Laboratory | Paramasivam M.,Tamil Nadu Agricultural University | Banerjee H.,AINP on Pesticide Residue Laboratory
Environmental Monitoring and Assessment | Year: 2013

Residues of fubendiamide and its metabolite desiodo flubendiamide were estimated in cabbage and soil using high-performance liquid chromatography with UV-vis detector. The initial deposits of flubendiamide residues on cabbage were found to be 0.16 and 0.31 μg g-1 following two applications of flubendiamide 20 WG at 12.5 (standard dose) and 25 (double dose) g a.i. ha -1 respectively at 10-days interval. The half-life values (t 1/2) of flubendiamide on cabbage ranged from 3.4 to 3.6 days. When flubendiamide applied at both the standard and double dose, no detectable residues were found in cabbage and soil at harvest. Thus, a waiting period of 1.63 days was suggested for the safe consumption of flubendiamide-treated cabbage. These data could provide guidance for the proper and safe use of this pesticide on cabbage crops in India. © 2012 Springer Science+Business Media B.V.


Banerjee H.,AINP on Pesticide Residue Laboratory | Ganguly P.,AINP on Pesticide Residue Laboratory | Roy S.,AINP on Pesticide Residue Laboratory | Banerjee D.,AINP on Pesticide Residue Laboratory | And 3 more authors.
Environmental Monitoring and Assessment | Year: 2010

A supervised field trial was conducted on tea with propineb at 1,750 and 3,500 g a.i./ha at two locations (Assam and Darjeeling), applied thrice at an interval of 10 days during the year 2006-2007. Propineb residue was measured spectrophotometrically at 435 nm in terms of CS2. The initial deposit of propineb in green tea leaves were found to be in the range of 16.26-35.96 mg/kg and the residue persisted up to 10 days irrespective of doses and locations with half-life value ranging from 2.24 to 2.43 days and preharvest interval of 17.17-21.37 days. Made tea residues ranged from 9.27 to 20.86 mg kg-1 on 7 days and no residues could be detected on 14 days. Infusion study indicated that propineb did not infuse into tea liquor from made tea. The limit of determination was found to be 0.1 mg kg-1 in terms of propineb for green tea leaves, made tea, and tea liquor. The tea applied with the recommended dose of propineb is safe for consumption as liquor. © 2009 Springer Science+Business Media B.V.


PubMed | AINP on Pesticide Residue Laboratory
Type: Journal Article | Journal: Bulletin of environmental contamination and toxicology | Year: 2012

A method for residue analysis of flubendiamide and its metabolite desiodo flubendiamide was developed using high performance liquid chromatography. This method was then used to evaluate the residual level and dissipation rate of flubendiamide and desiodo flubendiamide in the tomato fruit. The half-life of flubendiamide in tomato fruit was 1.64 and 1.98 days in recommended and double of the recommended dose, respectively. Tomato fruit and soil samples analyzed on the 10th day after the last spray revealed that flubendiamide and its metabolite desiodo flubendiamide residues at below determination level (0.01 g g(-1)) at either dose of application.


PubMed | AINP on Pesticide Residue Laboratory
Type: Journal Article | Journal: Bulletin of environmental contamination and toxicology | Year: 2011

A sensitive and simple method for simultaneous analysis of flubendiamide and its metabolite desiodo flubendiamide in cabbage, tomato and pigeon pea has been developed. The residues were extracted with QuEChERS method followed by dispersive solid-phase extraction with primary secondary amine sorbent to remove co extractives, prior to analysis by HPLC coupled with UV-Vis detector. The recoveries of flubendiamide and desiodo flubendiamide were ranged from 85.1 to 98.5% and 85.9 to 97.1% respectively with relative standard deviations (RSD) less than 5% and sensitivity of 0.01 g g(-1). The method offers a less expensive and safer alternative to the existing residue analysis methods for vegetables.


PubMed | AINP on Pesticide Residue Laboratory
Type: Journal Article | Journal: Environmental monitoring and assessment | Year: 2013

Residues of fubendiamide and its metabolite desiodo flubendiamide were estimated in cabbage and soil using high-performance liquid chromatography with UV-vis detector. The initial deposits of flubendiamide residues on cabbage were found to be 0.16 and 0.31 g g(-1) following two applications of flubendiamide 20 WG at 12.5 (standard dose) and 25 (double dose) g a.i. ha(-1) respectively at 10-days interval. The half-life values (t(1/2)) of flubendiamide on cabbage ranged from 3.4 to 3.6 days. When flubendiamide applied at both the standard and double dose, no detectable residues were found in cabbage and soil at harvest. Thus, a waiting period of 1.63 days was suggested for the safe consumption of flubendiamide-treated cabbage. These data could provide guidance for the proper and safe use of this pesticide on cabbage crops in India.


PubMed | AINP on Pesticide Residue Laboratory
Type: Journal Article | Journal: Environmental monitoring and assessment | Year: 2010

A supervised field trial was conducted on tea with propineb at 1,750 and 3,500 g a.i./ha at two locations (Assam and Darjeeling), applied thrice at an interval of 10 days during the year 2006-2007. Propineb residue was measured spectrophotometrically at 435 nm in terms of CS2. The initial deposit of propineb in green tea leaves were found to be in the range of 16.26-35.96 mg/kg and the residue persisted up to 10 days irrespective of doses and locations with half-life value ranging from 2.24 to 2.43 days and preharvest interval of 17.17-21.37 days. Made tea residues ranged from 9.27 to 20.86 mg kg(-1) on 7 days and no residues could be detected on 14 days. Infusion study indicated that propineb did not infuse into tea liquor from made tea. The limit of determination was found to be 0.1 mg kg(-1) in terms of propineb for green tea leaves, made tea, and tea liquor. The tea applied with the recommended dose of propineb is safe for consumption as liquor.

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