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Optimization of a sample preparation method for multiresidue analysis of pesticides in tobacco by single and multi-dimensional gas chromatography-mass spectrometry

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Title Optimization of a sample preparation method for multiresidue analysis of pesticides in tobacco by single and multi-dimensional gas chromatography-mass spectrometry
Not Available
 
Creator Zareen S. Khan, Rakesh Kumar Ghoshb, Rushali Girame, Sagar C. Utture, Manasi Gadgil, Kaushik Banerjee, D. Damodar Reddy, Nalli Johnson
 
Subject Tobacco, Multiresidue analysis of pesticides, Matrix effect, GC-MS, MDGC-MS
 
Description Not Available
A selective and sensitive multiresidue analysis method, comprising 4 7pesticides, was developed and
validated in tobacco matrix. The optimized sample preparation procedure in combination with gas
chromatography mass spectrometry in selected-ion-monitoring (GC-MS/SIM) mode offered limits of
detection (LOD) and quantification (LOQ) in the range of 3–5 and 7.5–15 ng/g, respectively, with recoveries
between 70 and 119% at 50–100 ng/g fortifications. In comparison to the modified QuEChERS (Quick-Easy-
Cheap-Effective-Rugged-Safe method: 2 g tobacco + 10 ml water + 10 ml acetonitrile, 30 min vortexing,
followed by dispersive solid phase extraction cleanup), the method performed better in minimizing
matrix co-extractives e.g. nicotine and megastigmatrienone. Ambiguity in analysis due to co-elution of
target analytes (e.g. transfluthrin-heptachlor) and with matrix co-extractives (e.g. -HCH-neophytadiene,
2,4-DDE-linolenic acid) could be resolved by selective multi-dimensional (MD)GC heart-cuts. The method
holds promise in routine analysis owing to noticeable efficiency of 27 samples/person/day.
Not Available
 
Date 2021-06-01T07:14:39Z
2021-06-01T07:14:39Z
2014
 
Type Journal
 
Identifier Not Available
Not Available
http://krishi.icar.gov.in/jspui/handle/123456789/47085
 
Language English
 
Relation Not Available;
 
Publisher Elsevier