2014
DOI: 10.1016/j.jare.2013.05.003
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Determination of kresoxim-methyl and its thermolabile metabolites in pear utilizing pepper leaf matrix as a protectant using gas chromatography

Abstract: Kresoxim-methyl and its two thermolabile metabolites, BF 490-2 and BF 490-9, were analyzed in pear using a pepper leaf matrix protection to maintain the metabolites inside the gas chromatography system. Samples were extracted with a mixture of ethyl acetate and n-hexane (1:1, v/v) and purified and/or separated using a solid phase extraction procedure. The pepper leaf matrix was added and optimized with cleaned pear extract to enhance metabolite sensitivity. Matrix matched calibration was used for kresoxim-meth… Show more

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Cited by 16 publications
(2 citation statements)
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“…Incorporating the pepper leaf matrix into the pear matrix ensured the integrity of the compounds, resulting in a precise and sensitive GC outcome for thermolabile kresoxim-methyl metabolites. The limits of detection (LOD) and quantification (LOQ) were determined to be 0.006 and 0.02 mg/kg for kresoxim-methyl and 0.02 and 0.065 mg/kg for the metabolites, respectively [ 39 ].…”
Section: Resultsmentioning
confidence: 99%
“…Incorporating the pepper leaf matrix into the pear matrix ensured the integrity of the compounds, resulting in a precise and sensitive GC outcome for thermolabile kresoxim-methyl metabolites. The limits of detection (LOD) and quantification (LOQ) were determined to be 0.006 and 0.02 mg/kg for kresoxim-methyl and 0.02 and 0.065 mg/kg for the metabolites, respectively [ 39 ].…”
Section: Resultsmentioning
confidence: 99%
“…The safety assessment indicates that tomato fruits may be regarded as safe for humans to eat. Deltamethrin was also reported to be safe in terms of application rate and pre-harvest interval in pear because the residue was 30 times lower than the MRL (1 mg kg −1 ) [25]. Blanching could be employed as a method of decontaminating Deltamethrin.…”
Section: Discussionmentioning
confidence: 99%