Atmospheric pressure glow discharge desorption mass spectrometry for rapid screening of pesticides in food

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Author(s) Jecklin, Matthias Conradin, Gamez, Gerardo, Touboul, David, Zenobi, Renato
Publication Type Journal Items, Publication Status: Published
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Title Atmospheric pressure glow discharge desorption mass spectrometry for rapid screening of pesticides in food
Author(s) Jecklin, Matthias Conradin
Gamez, Gerardo
Touboul, David
Zenobi, Renato
Journal or Series Title Rapid communications in mass spectrometry
Volume Number 22
Issue Number 18
Start Page 2791
End Page 2798
ISSN 0951-4198
1097-0231
Publisher Wiley
Publication Place London
Publication Date 2008
Abstract Flowing afterglow atmospheric pressure glow discharge tandem mass spectrometry (APGD-MS/MS) is used for the analysis of trace amounts of pesticides in fruit juices and on fruit peel. The APGD source was rebuilt after Andrade et al. (Andrade et al., Anal. Chem. 2008; 80: 2646-2653; 2654-2663) and mounted onto a hybrid quadrupole time-of-flight mass spectrometer. Apple, cranberry, grape and orange juices as well as fruit peel and salad leaves were spiked with aqueous solutions containing trace amounts of the pesticides alachlor, atrazine, carbendazim, carbofuran, dinoseb, isoproturon, metolachlor, metolcarb, propoxur and simazine. Best limits of determination (LODs) of pesticides in the fruit juices were achieved for metolcarb (1 microg/L in apple juice), carbofuran and dinoseb (2 microg/L in apple juice); for the analysis of apple skin best LODs were 10 pg/cm(2) of atrazine, metolcarb and propoxur which corresponds to an estimated concentration of 0.01 microg/kg apple, taking into account the surface area and the weight of the apple. The measured LODs were within or below the allowed maximum residue levels (MRLs) decreed by the European Union (1-500 microg/kg for pesticides in fruit juice and 0.01-5 microg/kg for apple skin). No sample pretreatment (extraction, pre-concentration, chromatographic separation) was necessary to analyze these pesticides by direct desorption/ionization using APGD-MS and to identify them using MS/MS. This makes APGD-MS a powerful high-throughput tool for the investigation of very low amounts of pesticides in fruit juices and on fruit peel/vegetable skin.
DOI 10.1002/rcm.3677
Additional Notes Received 23 April 2008, Revised 7 July 2008, Accepted 10 July 2008, Published Online 12 August 2008
Document Type Article
Publication Status Published
Language English
Assigned Organisational Unit(s) 03430
Organisational Unit(s)
NEBIS System Number 000038989
Source Database ID PP-41461
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@article{Jckln2008,
  author = "Jecklin, Matthias Conradin and Gamez, Gerardo and Touboul, David and Zenobi, Renato",
  title = "{A}tmospheric pressure glow discharge desorption mass spectrometry for rapid screening of pesticides in food",
  journal = "Rapid communications in mass spectrometry",
  year = 2008,
  volume = "22",
  number = "18",
  pages = "2791--2798",
}


E-Citations record created: Thu, 01 Apr 2010, 23:01:42 CET