PMID- 26434333
OWN - NLM
STAT- MEDLINE
DCOM- 20160420
LR  - 20181202
IS  - 1873-7072 (Electronic)
IS  - 0308-8146 (Linking)
VI  - 132
IP  - 1
DP  - 2012 May 1
TI  - Feasibility study for producing a carrot/potato matrix reference material for 11 
      selected pesticides at EU MRL level: material processing, homogeneity and 
      stability assessment.
PG  - 567-73
LID - S0308-8146(11)01524-X [pii]
LID - 10.1016/j.foodchem.2011.10.071 [doi]
AB  - The feasibility for producing a matrix reference material for selected pesticides 
      in a carrot/potato matrix was investigated. A commercially available baby food 
      (carrot/potato-based mash) was spiked with 11 pesticides at the respective EU 
      maximum residue limits (MRLs), and further processed by either freezing or 
      freeze-drying. Batches of some 150 units were produced per material type. First, 
      the materials were assessed for the relative amount of pesticide recovered after 
      processing (ratio of pesticide concentration in the processed material to the 
      initially spiked pesticide concentration). In addition, the materials' 
      homogeneity (bottle-to-bottle variation), and the short-term (1 month) and 
      mid-term (5 months) stability at different temperatures were assessed. For this, 
      an in-house validated GC-EI-MS method operated in the SIM mode with a sample 
      preparation procedure based on the QuEChERS ("quick, easy, cheap, effective, 
      rugged, and safe") principle was applied. Measurements on the frozen material 
      provided the most promising results (smallest analyte losses during production), 
      and also freeze-drying proved to be a suitable alternative processing technique 
      for most of the investigated pesticides. Both the frozen and the freeze-dried 
      material showed to be sufficiently homogeneous for the intended use, and storage 
      at -20 degrees C for 5 months did not reveal any detectable material degradation. The 
      results constitute an important step towards the development of a pesticide 
      matrix reference material.
CI  - Copyright (c) 2011 Elsevier Ltd. All rights reserved.
FAU - Saldanha, Helena
AU  - Saldanha H
AD  - European Commission, Joint Research Centre, Institute for Reference Materials and 
      Measurements (IRMM), Retieseweg 111, 2440 Geel, Belgium.
FAU - Sejeroe-Olsen, Berit
AU  - Sejeroe-Olsen B
AD  - European Commission, Joint Research Centre, Institute for Reference Materials and 
      Measurements (IRMM), Retieseweg 111, 2440 Geel, Belgium.
FAU - Ulberth, Franz
AU  - Ulberth F
AD  - European Commission, Joint Research Centre, Institute for Reference Materials and 
      Measurements (IRMM), Retieseweg 111, 2440 Geel, Belgium.
FAU - Emons, Hendrik
AU  - Emons H
AD  - European Commission, Joint Research Centre, Institute for Reference Materials and 
      Measurements (IRMM), Retieseweg 111, 2440 Geel, Belgium.
FAU - Zeleny, Reinhard
AU  - Zeleny R
AD  - European Commission, Joint Research Centre, Institute for Reference Materials and 
      Measurements (IRMM), Retieseweg 111, 2440 Geel, Belgium. Electronic address: 
      reinhard.zeleny@ec.europa.eu.
LA  - eng
PT  - Journal Article
DEP - 20111030
PL  - England
TA  - Food Chem
JT  - Food chemistry
JID - 7702639
RN  - 0 (Pesticides)
SB  - IM
MH  - Daucus carota/*chemistry
MH  - Feasibility Studies
MH  - Gas Chromatography-Mass Spectrometry/methods
MH  - Pesticides/analysis/*chemistry
MH  - Solanum tuberosum/*chemistry
OTO - NOTNLM
OT  - Feasibility study
OT  - Food
OT  - GC-MS
OT  - Homogeneity
OT  - Matrix reference material
OT  - Pesticides
OT  - Processing
OT  - Stability
EDAT- 2012/05/01 00:00
MHDA- 2016/04/21 06:00
CRDT- 2015/10/06 06:00
PHST- 2011/07/15 00:00 [received]
PHST- 2011/08/09 00:00 [revised]
PHST- 2011/10/22 00:00 [accepted]
PHST- 2015/10/06 06:00 [entrez]
PHST- 2012/05/01 00:00 [pubmed]
PHST- 2016/04/21 06:00 [medline]
AID - S0308-8146(11)01524-X [pii]
AID - 10.1016/j.foodchem.2011.10.071 [doi]
PST - ppublish
SO  - Food Chem. 2012 May 1;132(1):567-73. doi: 10.1016/j.foodchem.2011.10.071. Epub 
      2011 Oct 30.