PMID- 12350094
OWN - NLM
STAT- MEDLINE
DCOM- 20030331
LR  - 20190720
IS  - 0021-9673 (Print)
IS  - 0021-9673 (Linking)
VI  - 970
IP  - 1-2
DP  - 2002 Sep 13
TI  - Comparison of microextraction procedures to determine pesticides in oranges by 
      liquid chromatography-mass spectrometry.
PG  - 201-12
AB  - A liquid chromatographic-mass spectrometric method has been developed for the 
      determination of bitertanol, carbendazim, fenthion, flusilazole, hexythiazox, 
      imidacloprid, methidathion, methiocarb, pyriproxyfen and trichlorfon. Two 
      procedures, based on stir bar sorptive extraction (SBSE) and matrix solid-phase 
      dispersion (MSPD), have been evaluated for the extraction of these compounds in 
      oranges. Their respective advantages and disadvantages are also discussed. The 
      recoveries obtained by MSPD ranged from 47 to 96% and the relative standard 
      deviations (RSDs) ranged from 1 to 15%, whereas with the SBSE method the 
      recoveries were between 8 and 84% and the RSDs between 4 and 16%. Although, the 
      limits of quantitation of most compounds are much better (0.001-0.05 mg kg(-1)) 
      by SBSE, it is not suitable to determine some polar pesticides as carbendazim, 
      imidacloprid and trichlorfon. Results obtained by both methods were compared, in 
      terms of sensitivity and selectivity, with a classical ethyl acetate extraction 
      method, and the three methods were applied to analyze real samples. As MSPD is 
      easier to perform, faster than the organic solvent extraction, and shows equal 
      accuracy and resolution, its application for analyzing pesticides in oranges is 
      recommended.
FAU - Blasco, C
AU  - Blasco C
AD  - Laboratori de Bromatologia i Toxicologia, Facultat de Farmacia, Universitat de 
      Valencia, Burjassot, Spain.
FAU - Font, G
AU  - Font G
FAU - Pico, Y
AU  - Pico Y
LA  - eng
PT  - Comparative Study
PT  - Journal Article
PT  - Research Support, Non-U.S. Gov't
PL  - Netherlands
TA  - J Chromatogr A
JT  - Journal of chromatography. A
JID - 9318488
RN  - 0 (Pesticides)
SB  - IM
MH  - Chromatography, Liquid/*methods
MH  - Citrus sinensis/*chemistry
MH  - Mass Spectrometry/*methods
MH  - Pesticides/*analysis
MH  - Reproducibility of Results
MH  - Sensitivity and Specificity
EDAT- 2002/09/28 04:00
MHDA- 2003/04/01 05:00
CRDT- 2002/09/28 04:00
PHST- 2002/09/28 04:00 [pubmed]
PHST- 2003/04/01 05:00 [medline]
PHST- 2002/09/28 04:00 [entrez]
AID - S0021-9673(02)01034-8 [pii]
AID - 10.1016/s0021-9673(02)01034-8 [doi]
PST - ppublish
SO  - J Chromatogr A. 2002 Sep 13;970(1-2):201-12. doi: 10.1016/s0021-9673(02)01034-8.