TY - JOUR
T1 - An improved dispersive solid-phase extraction clean-up method for the gas chromatography-negative chemical ionisation tandem mass spectrometric determination of multiclass pesticide residues in edible oils
AU - Deme, Pragney
AU - Azmeera, Tirupathi
AU - Prabhavathi Devi, B. L.A.
AU - Jonnalagadda, Padmaja R.
AU - Prasad, R. B.N.
AU - Vijaya Sarathi, U. V.R.
N1 - Funding Information:
Pragney Deme thanks Council of Scientific and Industrial Research (CSIR) for the award of Senior Research Fellowship.
PY - 2014
Y1 - 2014
N2 - An improved sample preparation using dispersive solid-phase extraction clean-up was proposed for the trace level determination of 35 multiclass pesticide residues (organochlorine, organophosphorus and synthetic pyrethroids) in edible oils. Quantification of the analytes was carried out by gas chromatography-mass spectrometry in negative chemical ionisation mode (GC-NCI-MS/MS). The limit of detection and limit of quantification of residues were in the range of 0.01-1 ng/g and 0.05-2 ng/g, respectively. The analytes showed recoveries between 62% and 110%, and the matrix effect was observed to be less than 25% for most of the pesticides. Crude edible oil samples showed endosulfan isomers, p,p′-DDD, acypermethrin, chlorpyrifos, and diazinon residues in the range of 0.56-2.14 ng/g. However, no pesticide residues in the detection range of the method were observed in refined oils.
AB - An improved sample preparation using dispersive solid-phase extraction clean-up was proposed for the trace level determination of 35 multiclass pesticide residues (organochlorine, organophosphorus and synthetic pyrethroids) in edible oils. Quantification of the analytes was carried out by gas chromatography-mass spectrometry in negative chemical ionisation mode (GC-NCI-MS/MS). The limit of detection and limit of quantification of residues were in the range of 0.01-1 ng/g and 0.05-2 ng/g, respectively. The analytes showed recoveries between 62% and 110%, and the matrix effect was observed to be less than 25% for most of the pesticides. Crude edible oil samples showed endosulfan isomers, p,p′-DDD, acypermethrin, chlorpyrifos, and diazinon residues in the range of 0.56-2.14 ng/g. However, no pesticide residues in the detection range of the method were observed in refined oils.
KW - Dispersive solid-phase extraction
KW - Edible oils
KW - Gas chromatography
KW - Negative chemical ionisation
KW - Pesticides
KW - Tandem mass spectrometry
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U2 - 10.1016/j.foodchem.2013.07.044
DO - 10.1016/j.foodchem.2013.07.044
M3 - Article
AN - SCOPUS:84880994583
SN - 0308-8146
VL - 142
SP - 144
EP - 151
JO - Food Chemistry
JF - Food Chemistry
ER -