PMID- 24491709
OWN - NLM
STAT- MEDLINE
DCOM- 20140821
LR  - 20191210
IS  - 1873-7072 (Electronic)
IS  - 0308-8146 (Linking)
VI  - 153
DP  - 2014 Jun 15
TI  - A multi-residue method for the determination of pesticides in tea using 
      multi-walled carbon nanotubes as a dispersive solid phase extraction absorbent.
PG  - 121-9
LID - S0308-8146(13)01886-4 [pii]
LID - 10.1016/j.foodchem.2013.12.031 [doi]
AB  - A modified QuEChERS (quick, easy, cheap, effective, rugged and safe) method using 
      multi-walled carbon nanotubes (MWCNTs) as a dispersive solid phase extraction 
      (d-SPE) absorbent was established for analysis of 78 pesticide residues in tea. A 
      6 mg MWCNT sample was selected as the optimised amount based on the distribution 
      of pesticide recoveries and clean-up efficiency from 6 mL acetonitrile extracts. 
      The matrix effects of the method were evaluated and matrix-matched calibration 
      was recommended. The method was validated employing gas chromatography coupled to 
      tandem mass spectrometry (GC-MS/MS) at the spiked concentration levels of 0.05, 
      0.1 and 0.15 mg kg(-1). For most of the targeted pesticides, the percent 
      recoveries range from 70% to 120%, with relative standard deviations (RSDs) <20%. 
      The linear correlation coefficients (r(2)) were higher than 0.99 at concentration 
      levels of 0.025-0.500 mg kg(-1). In this study, MWCNTs were proved to be a 
      promising d-SPE absorbent with excellent cleanup efficiency, which could be 
      widely applied for the analysis of pesticide residues.
CI  - Copyright (c) 2013 Elsevier Ltd. All rights reserved.
FAU - Hou, Xue
AU  - Hou X
AD  - Center of Analysis and Testing, Sichuan Academy of Agricultural Sciences, Chengdu 
      610066, PR China; Chengdu Institute of Organic Chemistry, Chinese Academy of 
      Sciences, Chengdu 610041, PR China; University of Chinese Academy of Sciences, 
      Beijing 100039, PR China. Electronic address: houxue127@163.com.
FAU - Lei, Shaorong
AU  - Lei S
AD  - Center of Analysis and Testing, Sichuan Academy of Agricultural Sciences, Chengdu 
      610066, PR China.
FAU - Qiu, Shiting
AU  - Qiu S
AD  - Center of Analysis and Testing, Sichuan Academy of Agricultural Sciences, Chengdu 
      610066, PR China.
FAU - Guo, Lingan
AU  - Guo L
AD  - Center of Analysis and Testing, Sichuan Academy of Agricultural Sciences, Chengdu 
      610066, PR China.
FAU - Yi, Shengguo
AU  - Yi S
AD  - Center of Analysis and Testing, Sichuan Academy of Agricultural Sciences, Chengdu 
      610066, PR China.
FAU - Liu, Wei
AU  - Liu W
AD  - Center of Analysis and Testing, Sichuan Academy of Agricultural Sciences, Chengdu 
      610066, PR China.
LA  - eng
PT  - Evaluation Study
PT  - Journal Article
DEP - 20131215
PL  - England
TA  - Food Chem
JT  - Food chemistry
JID - 7702639
RN  - 0 (Nanotubes, Carbon)
RN  - 0 (Pesticide Residues)
RN  - 0 (Tea)
SB  - IM
MH  - Adsorption
MH  - Food Contamination/*analysis
MH  - Gas Chromatography-Mass Spectrometry
MH  - Nanotubes, Carbon/*chemistry
MH  - Pesticide Residues/chemistry/*isolation & purification
MH  - Solid Phase Extraction/instrumentation/*methods
MH  - Tea/*chemistry
OTO - NOTNLM
OT  - GC-MS/MS
OT  - MWCNTs
OT  - PTV
OT  - Pesticide residues
OT  - QuEChERS
OT  - Tea
EDAT- 2014/02/05 06:00
MHDA- 2014/08/22 06:00
CRDT- 2014/02/05 06:00
PHST- 2013/06/04 00:00 [received]
PHST- 2013/11/26 00:00 [revised]
PHST- 2013/12/07 00:00 [accepted]
PHST- 2014/02/05 06:00 [entrez]
PHST- 2014/02/05 06:00 [pubmed]
PHST- 2014/08/22 06:00 [medline]
AID - S0308-8146(13)01886-4 [pii]
AID - 10.1016/j.foodchem.2013.12.031 [doi]
PST - ppublish
SO  - Food Chem. 2014 Jun 15;153:121-9. doi: 10.1016/j.foodchem.2013.12.031. Epub 2013 
      Dec 15.