Staff Publications

Staff Publications

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    'Staff publications' is the digital repository of Wageningen University & Research

    'Staff publications' contains references to publications authored by Wageningen University staff from 1976 onward.

    Publications authored by the staff of the Research Institutes are available from 1995 onwards.

    Full text documents are added when available. The database is updated daily and currently holds about 240,000 items, of which 72,000 in open access.

    We have a manual that explains all the features 

Record number 411925
Title Qualitative Aspects in the Analysis of Pesticide Residues in Fruits and Vegetables Using Fast, Low -Pressure Gas Chromatography-Time-of-Flight Mass Spectrometry
Author(s) Lehotay, S.J.; Koesukwiwat, U.; Kamp, H.J. van der; Mol, J.G.J.; Leepipatpiboon, N.
Source Journal of Agricultural and Food Chemistry 59 (2011)14. - ISSN 0021-8561 - p. 7544 - 7556.
DOI http://dx.doi.org/10.1021/jf104606j
Department(s) RIKILT - R&C Natuurlijke Toxinen en Pesticiden
Publication type Refereed Article in a scientific journal
Publication year 2011
Keyword(s) gc-ms - spectral deconvolution - identification system - multiresidue method - quechers - confirmation - extraction - food
Abstract Quantitative method validation is a well-established process to demonstrate trueness and precision of the results with a given method. However, an assessment of qualitative results is also an important need to estimate selectivity and devise criteria for chemical identification when using the method, particularly for mass spectrometric analysis. For multianalyte analysis, automatic instrument software is commonly used to make initial qualitative identifications of the target analytes by comparison of their mass spectra against a database library. Especially at low residue levels in complex matrices, manual checking of results is typically needed to correct the peak assignments and integration errors, which is very time-consuming. Low-pressure gas chromatography-mass spectrometry (LP-GC-MS) has been demonstrated to increase the speed of analysis for GC-amenable residues in various foods and provide more advantages over the traditional GC-MS approach. LP-GC-MS on a time-of-flight (ToF) instrument was used, which provided high sample throughput with
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