Development and application of a method for analysis of lufenuron in wheat flour by gas chromatography–mass spectrometry and confirmation of bio-efficacy against Tribolium castaneum (Herbst) (Coleoptera: Tenebrionidae)

Ahire, Kedar; Arora, Manjit Singh; Mukherjee, Samindra N.

doi:10.1016/j.jchromb.2007.11.026

Cited by 17 publications

(7 citation statements)

References 20 publications

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“…These values are supported with those obtained by Krause (1980), Al-Samariee et al, (1988) and Teixeira, et al, (2004). It was reported that average recovery was 87.6%, for grape samples spiked with azoxystrobin (Bursi , et al, 2007), >81% for grape samples fortified with fenhexamid (Likas, et al, 2007) and 98.23% for lufenuron extracted (Ahire, et al, 2008), using procedures which are almost similar to that in the present investigation.…”

Section: Results and Discussion Analysis Of Tested Pesticides On Grasupporting

confidence: 91%

Chromatographic Determination of Azoxystrobin, Fenhexamid and Lufenur on Residues in Grapevine

2009

Alexandria Science Exchange Journal: An International Quarterly

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Residues of azoxystrobin (Amistar 25% SC), fenhexamid (Telidor 50% SC) and lufenuron (Match 5% EC) were determined on grapes treated with recommended doses. Grape leaves and fruit samples randomly collected after 1hr, 1, 3, 6, 10, 15 and 21 days of application, were extracted, cleaned-up and analyzed using chromatographic methods. Azoxystrobin, fenhexamid and lufenuron residues were dissipated on grape leaves after ten days of treatment by 87.83, 99.23 and 99.29% of the initial concentration, respectively. The corresponding values for dissipation of mentioned pesticides on grape fruits were 93.55, 99.62 and 99.99% of the initial concentration, respectively. The pre-harvest intervals (PHI) were calculated to be 6, 10 and 7 days after application of azoxystrobin, fenhexamid and lufenuron on grapes, respectively.

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Section: Results and Discussion Analysis Of Tested Pesticides On Grasupporting

confidence: 91%

Chromatographic Determination of Azoxystrobin, Fenhexamid and Lufenur on Residues in Grapevine

2009

Alexandria Science Exchange Journal: An International Quarterly

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“…Using Triplus autosampler 15 ll of sample was injected with four pre-injection and post injection washes with hexane. The autosampler and injector parameters were as described in our earlier study (Ahire et al 2008). The chromatographic separation of TBP was performed on a Mega-5-MS column (Mega Capillary Columns Laboratory, Italy) with 30 m 9 0.32 mm i.d.…”

Section: Biodegradation Studiesmentioning

confidence: 99%

Biodegradation of tributyl phosphate by novel bacteria isolated from enrichment cultures

et al. 2011

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Tributyl phosphate (TBP) is an organophosphorous compound, used extensively (3000-5000 tonnes/annum) as a solvent for nuclear fuel processing and as a base stock in the formulation of fire-resistant aircraft hydraulic fluids and other applications. Because of its wide applications and relative stability in the natural environment TBP poses the problem of pollution and health hazards. In the present study, fifteen potent bacterial strains capable of using tributyl phosphate (TBP) as sole carbon and phosphorus source were isolated from enrichment cultures. These isolates were identified on the basis of biochemical and morphological characteristics and 16S rRNA gene sequence analysis. Phylogenetic analysis of 16S rRNA gene sequences revealed that two isolates belonged to class Bacilli and thirteen to β and γ-Proteobacteria. All these isolates were found to be members of genera Alcaligenes, Providencia, Delftia, Ralstonia, and Bacillus. These isolates were able to tolerate and degrade up to 5 mM TBP, the highest concentration reported to date. The GC-MS method was developed to monitor TBP degradation. Two strains, Providencia sp. BGW4 and Delftia sp. BGW1 showed respectively, 61.0 ± 2.8% and 57.0 ± 2.0% TBP degradation within 4 days. The degradation rate constants, calculated by first order kinetic model were between 0.0024 and 0.0099 h(-1). These bacterial strains are novel for TBP degradation and could be used as an important bioresource for efficient decontamination of TBP polluted waste streams.

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“…A number of analytical methods have been reported for determination of BPU concentration, mostly in fruits and vegetables. Some of the published studies dealt with measurement of a single BPU, [13][14][15][16] whereas others involved measurements of residues of multiple BPUs. [17][18][19][20][21][22] Generally, analyses of BPUs have been accomplished by high performance liquid chromatography (HPLC) in combination with ultraviolet, 14) diode array detection (DAD), 23) mass spectrometry (MS), 13) and tandem mass spectrometry 24) detection systems.…”

Section: Introductionmentioning

confidence: 99%

“…[17][18][19][20][21][22] Generally, analyses of BPUs have been accomplished by high performance liquid chromatography (HPLC) in combination with ultraviolet, 14) diode array detection (DAD), 23) mass spectrometry (MS), 13) and tandem mass spectrometry 24) detection systems. Alternative methods, such as gas chromatography (GC) coupled with electron-capture detection (ECD) 15) or mass spectrometry (MS), 16) have also been applied to screen BPUs. Information about how BPU toxicants are distributed or transferred among termite colony members is scarce, partly due to the lack of an effective method to analyze BPUs in termites.…”

Section: Introductionmentioning

confidence: 99%

Gc-Msを用いたシロアリ中のクロルフルアズロンの簡便かつ高感度な定量分析

et al. 2013

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Chlorfluazuron (CFZ) is a benzoylphenylurea insecticide that is commonly used in baits for management of subterranean termites. In this study, a new method using GC-MS for the determination and quantification of CFZ in termites was developed and validated. Since a small volume of organic solvent (250 µL) was used in the sample preparation procedure, the extract was analyzed without any evaporation. The assay was simple and rapid, with a short GC run time (10.0 min). The calibration curve was linear over the range of 0.1-2.5 µg/g, and the correlation coefficient was >0.998. This method was sensitive, as demonstrated by the detection and quantification limits of 0.003 µg/g and 0.1 µg/g, respectively. The mean recovery of CFZ from spiked samples was 95.6%. The within-day and between-day precision and accuracy of the assays ranged between 1.19 and 6.43%. This method was used to screen for CFZ transfer between nestmates of a treated Macrotermes gilvus mound. The highest amount of CFZ was detected in workers from the royal chamber, followed by workers in the peripheral zone, workers in the nursery zone, larvae in the nursery zone, and larvae in the peripheral zone.

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Development and application of a method for analysis of lufenuron in wheat flour by gas chromatography–mass spectrometry and confirmation of bio-efficacy against Tribolium castaneum (Herbst) (Coleoptera: Tenebrionidae)

Cited by 17 publications

References 20 publications

Chromatographic Determination of Azoxystrobin, Fenhexamid and Lufenur on Residues in Grapevine

Chromatographic Determination of Azoxystrobin, Fenhexamid and Lufenur on Residues in Grapevine

Biodegradation of tributyl phosphate by novel bacteria isolated from enrichment cultures

Gc-Msを用いたシロアリ中のクロルフルアズロンの簡便かつ高感度な定量分析

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