PMID- 21558664
OWN - NLM
STAT- MEDLINE
DCOM- 20111013
LR  - 20190827
IS  - 1348-2246 (Electronic)
IS  - 0910-6340 (Linking)
VI  - 27
IP  - 5
DP  - 2011
TI  - Evaluation of dispersive liquid-liquid microextraction coupled with gas 
      chromatography-microelectron capture detection (GC-microECD) for the determination of 
      organochlorine pesticides in water samples.
PG  - 547
AB  - The extraction efficiency of a dispersive liquid-liquid microextraction (DLLME) 
      method coupled with gas chromatography-microelectron capture detection (GC-microECD) 
      for the simultaneous determination of 20 organochlorine pesticides (OCPs) in 
      water samples was evaluated. The optimum conditions of DLLME for OCP measurement 
      in water sample were determined with 10 microL of carbon tetrachloride (CCl(4)) and 
      1.5 mL of acetone as the extraction and dispersive solvents, respectively, all 
      measurements were conducted under room temperature without the addition of salt. 
      OCPs were extracted with good recoveries (60.35 - 107.89%) by the proposed 
      method, except for heptachlor and aldrin due to the specific physico-chemical 
      properties of these chemicals. Quantitative analysis showed that the relative 
      standard deviations (RSDs) were below 9% and rather wider linear ranges (LRs) of 
      0.1 - 50 microg/L were obtained. The limits of detection (LODs) were in the range of 
      0.21 - 11.65 ng/L and no significant matrix effects were observed. Obtained 
      results demonstrated that DLLME coupled with GC-microECD was rapid, convenient and 
      efficient for OCP analysis in water samples.
FAU - Zhao, Zhonghua
AU  - Zhao Z
AD  - State Key Laboratory for Lake Science and Environment Research, Nanjing Institute 
      of Geography and Limnology, Chinese Academy of Sciences, Nanjing, China.
FAU - Zhang, Lu
AU  - Zhang L
FAU - Wu, Jinglu
AU  - Wu J
FAU - Jin, Miao
AU  - Jin M
FAU - Fan, Chengxin
AU  - Fan C
LA  - eng
PT  - Journal Article
PT  - Research Support, Non-U.S. Gov't
PL  - Switzerland
TA  - Anal Sci
JT  - Analytical sciences : the international journal of the Japan Society for 
      Analytical Chemistry
JID - 8511078
RN  - 0 (Pesticides)
RN  - 0 (Polycyclic Aromatic Hydrocarbons)
RN  - 0 (Water Pollutants, Chemical)
SB  - IM
MH  - Chemical Fractionation
MH  - Chromatography, Gas
MH  - *Electrons
MH  - Fresh Water/*chemistry
MH  - Pesticides/*analysis
MH  - Polycyclic Aromatic Hydrocarbons/*analysis
MH  - Water Pollutants, Chemical/*chemistry
MH  - Water Supply/*analysis
EDAT- 2011/05/12 06:00
MHDA- 2011/10/14 06:00
CRDT- 2011/05/12 06:00
PHST- 2011/05/12 06:00 [entrez]
PHST- 2011/05/12 06:00 [pubmed]
PHST- 2011/10/14 06:00 [medline]
AID - JST.JSTAGE/analsci/27.547 [pii]
AID - 10.2116/analsci.27.547 [doi]
PST - ppublish
SO  - Anal Sci. 2011;27(5):547. doi: 10.2116/analsci.27.547.