PMID- 20149377
OWN - NLM
STAT- MEDLINE
DCOM- 20100512
LR  - 20191210
IS  - 1873-3778 (Electronic)
IS  - 0021-9673 (Linking)
VI  - 1217
IP  - 12
DP  - 2010 Mar 19
TI  - Validation and uncertainty analysis of a multiresidue method for 42 pesticides in 
      made tea, tea infusion and spent leaves using ethyl acetate extraction and liquid 
      chromatography-tandem mass spectrometry.
PG  - 1926-33
LID - 10.1016/j.chroma.2010.01.062 [doi]
AB  - A rapid, specific and sensitive multiresidue method to determine 42 pesticides in 
      made tea, tea infusion and spent leaves has been developed and validated for the 
      routine analysis by liquid chromatography-tandem mass spectrometry (LC-MS/MS). 
      The method was reproducible (Horwitz ratio (HorRat) <0.5 at 50 ng/g) and 
      validated by the analysis of sample spiked at 50 and 100 ng/g in made tea, tea 
      infusion and spent leaves. The samples were extracted with ethyl 
      acetate+cyclohexane (9:1; v/v), and the extracts were cleaned up by dispersive 
      solid phase extraction with primary secondary amine sorbent+graphitized carbon 
      black+Florisil. The recoveries of all the pesticides were between 70% and 120% 
      with a relative standard deviation of less than 15% and correlation coefficient 
      for each pesticide was R(2) > or =0.99. The matrix effect on signal of respective 
      compounds was measured by comparing matrix-matched calibration standards with 
      those in solvent-only. The limits of quantitation (LOQ) met the requirements of 
      the maximum residue limits (MRLs) for pesticides in tea as recommended by the 
      European Union.
CI  - Copyright 2010 Elsevier B.V. All rights reserved.
FAU - Kanrar, Bappaditya
AU  - Kanrar B
AD  - Export Testing Laboratory, Department of Agricultural Chemicals, Bidhan Chandra 
      Krishi Viswavidyalaya, Mohanpur 741252, West Bengal, India.
FAU - Mandal, Sudeb
AU  - Mandal S
FAU - Bhattacharyya, Anjan
AU  - Bhattacharyya A
LA  - eng
PT  - Journal Article
PT  - Research Support, Non-U.S. Gov't
PT  - Validation Study
DEP - 20100125
PL  - Netherlands
TA  - J Chromatogr A
JT  - Journal of chromatography. A
JID - 9318488
RN  - 0 (Acetates)
RN  - 0 (Pesticide Residues)
RN  - 0 (Solvents)
RN  - 0 (Tea)
RN  - 76845O8NMZ (ethyl acetate)
SB  - IM
MH  - Acetates
MH  - Chromatography, Liquid/*methods
MH  - Pesticide Residues/*analysis
MH  - Plant Leaves/*chemistry
MH  - Reproducibility of Results
MH  - Solid Phase Extraction/*methods
MH  - Solvents
MH  - Tandem Mass Spectrometry/*methods
MH  - Tea/*chemistry
MH  - *Uncertainty
EDAT- 2010/02/13 06:00
MHDA- 2010/05/13 06:00
CRDT- 2010/02/13 06:00
PHST- 2009/11/11 00:00 [received]
PHST- 2009/12/29 00:00 [revised]
PHST- 2010/01/19 00:00 [accepted]
PHST- 2010/02/13 06:00 [entrez]
PHST- 2010/02/13 06:00 [pubmed]
PHST- 2010/05/13 06:00 [medline]
AID - S0021-9673(10)00099-3 [pii]
AID - 10.1016/j.chroma.2010.01.062 [doi]
PST - ppublish
SO  - J Chromatogr A. 2010 Mar 19;1217(12):1926-33. doi: 10.1016/j.chroma.2010.01.062. 
      Epub 2010 Jan 25.