PMID- 26452797
OWN - NLM
STAT- MEDLINE
DCOM- 20160720
LR  - 20151010
IS  - 1873-3573 (Electronic)
IS  - 0039-9140 (Linking)
VI  - 144
DP  - 2015 Nov 1
TI  - In situ metathesis reaction combined with liquid-phase microextraction based on 
      the solidification of sedimentary ionic liquids for the determination of 
      pyrethroid insecticides in water samples.
PG  - 98-104
LID - S0039-9140(15)30032-1 [pii]
LID - 10.1016/j.talanta.2015.05.077 [doi]
AB  - A novel dispersion liquid-liquid microextraction method based on the 
      solidification of sedimentary ionic liquids (SSIL-DLLME), in which an in situ 
      metathesis reaction forms an ionic liquid (IL) extraction phase, was developed to 
      determine four pyrethroid insecticides (i.e., permethrin, cyhalothrin, 
      fenpropathrin, and transfluthrin) in water followed by separation using 
      high-performance liquid chromatography. In the developed method, in situ DLLME 
      was used to enhance the extraction efficiency and yield. After centrifugation, 
      the extraction solvent, tributyldodecylphosphonium hexafluorophosphate 
      ([P44412][PF6]), was easily collected by solidification in the bottom of the 
      tube. The effects of various experimental parameters, the quantity of 
      tributyldodecylphosphonium bromide ([P44412]Br), the molar ratio of [P44412]Br to 
      potassium hexafluorophosphate (KPF6), the ionic strength, the temperature of the 
      sample solution, and the centrifugation time, were optimized using a 
      Plackett-Burman design to identify the significant factors that affected the 
      extraction efficiency. These significant factors were then optimized using a 
      central composite design. Under the optimized conditions, the recoveries of the 
      four pyrethroid insecticides at four spiked levels ranged from 87.1% to 101.7%, 
      with relative standard deviations (RSDs) ranging from 0.1% to 5.5%. At 
      concentration levels between 1 and 500 microg/L, good linearity was obtained, with 
      coefficients of determination greater than 0.9995. The limits of detection (LODs) 
      for the four pyrethroid insecticides were in the range of 0.71-1.54 microg/L. The 
      developed method was then successfully used for the determination of pyrethroid 
      insecticides in environmental samples.
CI  - Copyright (c) 2015 Elsevier B.V. All rights reserved.
FAU - Hu, Lu
AU  - Hu L
AD  - Department of Applied Chemistry, China Agricultural University, Yuanmingyuan West 
      Road 2#, Haidian District, Beijing 100194, China.
FAU - Zhang, Panjie
AU  - Zhang P
AD  - Department of Applied Chemistry, China Agricultural University, Yuanmingyuan West 
      Road 2#, Haidian District, Beijing 100194, China.
FAU - Shan, Wanyu
AU  - Shan W
AD  - Department of Applied Chemistry, China Agricultural University, Yuanmingyuan West 
      Road 2#, Haidian District, Beijing 100194, China.
FAU - Wang, Xuan
AU  - Wang X
AD  - Department of Applied Chemistry, China Agricultural University, Yuanmingyuan West 
      Road 2#, Haidian District, Beijing 100194, China.
FAU - Li, Songqing
AU  - Li S
AD  - Department of Applied Chemistry, China Agricultural University, Yuanmingyuan West 
      Road 2#, Haidian District, Beijing 100194, China.
FAU - Zhou, Wenfeng
AU  - Zhou W
AD  - Department of Applied Chemistry, China Agricultural University, Yuanmingyuan West 
      Road 2#, Haidian District, Beijing 100194, China.
FAU - Gao, Haixiang
AU  - Gao H
AD  - Department of Applied Chemistry, China Agricultural University, Yuanmingyuan West 
      Road 2#, Haidian District, Beijing 100194, China. Electronic address: 
      hxgao@cau.edu.cn.
LA  - eng
PT  - Journal Article
PT  - Research Support, Non-U.S. Gov't
DEP - 20150528
PL  - Netherlands
TA  - Talanta
JT  - Talanta
JID - 2984816R
RN  - 0 (Insecticides)
RN  - 0 (Ionic Liquids)
RN  - 0 (Pyrethrins)
RN  - 0 (Water Pollutants, Chemical)
RN  - 059QF0KO0R (Water)
SB  - IM
MH  - Insecticides/analysis/isolation & purification
MH  - Ionic Liquids/*chemistry
MH  - Liquid Phase Microextraction/*methods
MH  - Pyrethrins/*analysis/*isolation & purification
MH  - Reproducibility of Results
MH  - Water/*chemistry
MH  - Water Pollutants, Chemical/analysis/isolation & purification
OTO - NOTNLM
OT  - Central composite design
OT  - Dispersion liquid-liquid microextraction
OT  - High performance liquid chromatography
OT  - In situ metathesis
OT  - Pyrethroid insecticides
OT  - Solidification of sedimentary ionic liquids
EDAT- 2015/10/11 06:00
MHDA- 2016/07/21 06:00
CRDT- 2015/10/11 06:00
PHST- 2015/01/26 00:00 [received]
PHST- 2015/05/23 00:00 [revised]
PHST- 2015/05/28 00:00 [accepted]
PHST- 2015/10/11 06:00 [entrez]
PHST- 2015/10/11 06:00 [pubmed]
PHST- 2016/07/21 06:00 [medline]
AID - S0039-9140(15)30032-1 [pii]
AID - 10.1016/j.talanta.2015.05.077 [doi]
PST - ppublish
SO  - Talanta. 2015 Nov 1;144:98-104. doi: 10.1016/j.talanta.2015.05.077. Epub 2015 May 
      28.