PMID- 19198813
OWN - NLM
STAT- MEDLINE
DCOM- 20090529
LR  - 20160512
IS  - 1618-2650 (Electronic)
IS  - 1618-2642 (Linking)
VI  - 393
IP  - 6-7
DP  - 2009 Mar
TI  - Pesticide residue determination in surface waters by stir bar sorptive extraction 
      and liquid chromatography/tandem mass spectrometry.
PG  - 1733-43
LID - 10.1007/s00216-009-2627-x [doi]
AB  - In this stir bar sorptive extraction (SBSE) method, 16 pesticides were extracted 
      from surface water samples by sorption onto 1 mm polydimethylsiloxane layer 
      coated on a 10-mm-length stir bar magnet. After liquid desorption of the analytes 
      with 1 ml of methanol, the detection was performed on a liquid 
      chromatography-tandem mass spectrometry with a triple quadrupole (QqQ) analyzer 
      using selected reaction monitoring mode via electrospray ionization. Parameters 
      affecting SBSE operation, including sample volume, salt addition, extraction 
      time, stirring rate, and desorption conditions, have been evaluated. The 
      optimized SBSE method required two 50 ml aliquots of surface water samples, one 
      aliquot was added of 30% NaCl and stirred at 900 rpm during 1 h for testing five 
      pesticides with log K(o/w) < 3, and the other aliquot was directly extracted 
      following the same procedure for the rest of the pesticides with log K(o/w) > 3. 
      The method was validated in spiked surface water samples at limits of 
      quantifications (LOQs) and ten times the LOQs showing recoveries <62%, and the 
      LOQs reached were from 0.03 microg l(-1) for diazinon to 3 microg l(-1) for 
      simazine. The proposed methodology was applied to the determination of these 
      compounds in samples from Albufera Lake and surrounding channels, showing that 
      SBSE is a powerful tool for routine control analysis of pesticide residues in 
      surface water.
FAU - Giordano, A
AU  - Giordano A
AD  - Laboratory of Environmental Chemistry, Faculty of Chemical and Pharmaceutical 
      Science, University of Chile, Santiago, RM, Chile.
FAU - Fernandez-Franzon, M
AU  - Fernandez-Franzon M
FAU - Ruiz, M J
AU  - Ruiz MJ
FAU - Font, G
AU  - Font G
FAU - Pico, Y
AU  - Pico Y
LA  - eng
PT  - Journal Article
PT  - Research Support, Non-U.S. Gov't
DEP - 20090207
PL  - Germany
TA  - Anal Bioanal Chem
JT  - Analytical and bioanalytical chemistry
JID - 101134327
RN  - 0 (Pesticide Residues)
RN  - 451W47IQ8X (Sodium Chloride)
RN  - SG0C34SMY3 (Simazine)
RN  - YUS1M1Q929 (Diazinon)
SB  - IM
MH  - Chemical Fractionation/*methods
MH  - Chromatography, Liquid/methods
MH  - Diazinon/analysis
MH  - Fresh Water/*chemistry
MH  - Pesticide Residues/*analysis
MH  - Reproducibility of Results
MH  - Sensitivity and Specificity
MH  - Simazine/analysis
MH  - Sodium Chloride/chemistry
MH  - Tandem Mass Spectrometry/methods
EDAT- 2009/02/10 09:00
MHDA- 2009/05/30 09:00
CRDT- 2009/02/10 09:00
PHST- 2008/10/21 00:00 [received]
PHST- 2009/01/15 00:00 [accepted]
PHST- 2009/01/14 00:00 [revised]
PHST- 2009/02/10 09:00 [entrez]
PHST- 2009/02/10 09:00 [pubmed]
PHST- 2009/05/30 09:00 [medline]
AID - 10.1007/s00216-009-2627-x [doi]
PST - ppublish
SO  - Anal Bioanal Chem. 2009 Mar;393(6-7):1733-43. doi: 10.1007/s00216-009-2627-x. 
      Epub 2009 Feb 7.