PMID- 21538877
OWN - NLM
STAT- MEDLINE
DCOM- 20111129
LR  - 20191210
IS  - 1615-9314 (Electronic)
IS  - 1615-9306 (Linking)
VI  - 34
IP  - 11
DP  - 2011 Jun
TI  - Validated dispersive liquid-liquid microextraction for analysis of 
      organophosphorous pesticides in water.
PG  - 1326-32
LID - 10.1002/jssc.201100111 [doi]
AB  - Dispersive liquid-liquid microextraction (DLLME) combined with gas chromatography 
      and mass spectrometry (GC-MS) was applied to the determination of six 
      organophosphorous pesticides (OPPs) in water samples. The analytes included in 
      this study were prophos, diazinon, chlorpyrifos methyl, methyl parathion, 
      fenchlorphos and chlorpyrifos. Several extraction and dispersion solvents were 
      tested for dispersive liquid-liquid microextraction of these analytes and the 
      best results were obtained using chloroform as extraction solvent and 2-propanol 
      as dispersion solvent. Calibration curves of the analytes in water samples were 
      constructed in the concentration range from 100 to 1100 ng/L for prophos, 
      diazinon and methyl parathion and in the range from 100 to 1000 ng/L for 
      chlorpyrifos methyl, fenchlorphos and chlorpyrifos. Limits of detection (LODs) 
      were in the range of 1.5-9.1 ng/L and limits of quantification (LOQs) were in the 
      range of 5.1-30.3 ng/L, below the maximum admissible level for drinking water. 
      Relative standard deviations (RSDs) were between 6.5 and 10.1% in the 
      concentration range of 100-1000 ng/L. The relative recoveries (%RRs) of tap, well 
      and irrigation water samples fortified at 800 ng/L were in the range of 
      46.1-129.4%, with a larger matrix effect being detected in tap water.
CI  - Copyright (c) 2011 WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim.
FAU - Alves, Andreia Cristina Henriques
AU  - Alves AC
AD  - UBiA, Faculdade de Ciencias e Tecnologia, Universidade Nova de Lisboa, Caparica, 
      Portugal. andreia.c.h.alves@gmail.com
FAU - Goncalves, Maria Margarida Pontes Boavida
AU  - Goncalves MM
FAU - Bernardo, Maria Manuel Serrano
AU  - Bernardo MM
FAU - Mendes, Benilde Simoes
AU  - Mendes BS
LA  - eng
PT  - Journal Article
PT  - Validation Study
DEP - 20110427
PL  - Germany
TA  - J Sep Sci
JT  - Journal of separation science
JID - 101088554
RN  - 0 (Organophosphorus Compounds)
RN  - 0 (Pesticides)
RN  - 059QF0KO0R (Water)
SB  - IM
MH  - Chemical Fractionation/*methods
MH  - Gas Chromatography-Mass Spectrometry
MH  - Organophosphorus Compounds/*analysis
MH  - Pesticides/*analysis
MH  - Water/*chemistry
EDAT- 2011/05/04 06:00
MHDA- 2011/12/13 00:00
CRDT- 2011/05/04 06:00
PHST- 2011/02/09 00:00 [received]
PHST- 2011/03/11 00:00 [revised]
PHST- 2011/03/13 00:00 [accepted]
PHST- 2011/05/04 06:00 [entrez]
PHST- 2011/05/04 06:00 [pubmed]
PHST- 2011/12/13 00:00 [medline]
AID - 10.1002/jssc.201100111 [doi]
PST - ppublish
SO  - J Sep Sci. 2011 Jun;34(11):1326-32. doi: 10.1002/jssc.201100111. Epub 2011 Apr 
      27.