PMID- 20869505
OWN - NLM
STAT- MEDLINE
DCOM- 20110112
LR  - 20240109
IS  - 1873-4324 (Electronic)
IS  - 0003-2670 (Linking)
VI  - 678
IP  - 1
DP  - 2010 Sep 23
TI  - Simultaneous determination of pyrethrins residues in teas by ultra-performance 
      liquid chromatography/tandem mass spectrometry.
PG  - 56-62
LID - 10.1016/j.aca.2010.08.015 [doi]
AB  - A sensitive and effective method for the simultaneous quantitative determination 
      of pyrethrin residues in teas was developed and validated using ultra-performance 
      liquid chromatography coupled with tandem mass spectrometry (UPLC-MS/MS). The six 
      major constituents of the pyrethrins (pyrethrin I and II, jasmolin I and II, and 
      cinerin I and II) were successfully separated and independently confirmed in a 
      single run within approximately 5 min. The multi-residue analysis of pyrethrins 
      in teas involved simply extraction with acetonitrile, clean-up using a multilayer 
      solid phase extraction cartridge, and subsequent separation by a hydrophilic 
      end-capped Aquasil C18 columns with detection by tandem mass spectrometry using 
      an electrospray ionization source in positive mode (ESI+). Recovery studies were 
      carried out at three spiked levels (0.05, 0.1, 0.5 mg kg(-1)). The overall 
      average recoveries using this method in green teas and black teas at the three 
      concentration levels ranged from 76.15% to 101.86% with relative standard 
      deviations (RSDs) in the range of 2.71-12.93% (n=5) for all analytes. The limits 
      of detections (LODs) were below 0.009 mg kg(-1), which were lower than the 
      maximum residue limits (MRLs) of 0.5 mg kg(-1) in tea samples established by the 
      European Union legislations in 2008, while the limits of quantification (LOQ) did 
      not exceed 0.03 mg kg(-1). This study provides a theoretical basis for China to 
      draw up MRLs for pyrethrins in teas.
CI  - Copyright (c) 2010. Published by Elsevier B.V.
FAU - Lu, Caihong
AU  - Lu C
AD  - Key Laboratory of Pesticide Chemistry and Application, Ministry of Agriculture, 
      Institute of Plant Protection, Chinese Academy of Agricultural Sciences, Beijing 
      100193, China.
FAU - Liu, Xingang
AU  - Liu X
FAU - Dong, Fengshou
AU  - Dong F
FAU - Xu, Jun
AU  - Xu J
FAU - Song, Wencheng
AU  - Song W
FAU - Zhang, Changpeng
AU  - Zhang C
FAU - Li, Yuanbo
AU  - Li Y
FAU - Zheng, Yongquan
AU  - Zheng Y
LA  - eng
PT  - Journal Article
PT  - Research Support, Non-U.S. Gov't
DEP - 20100820
PL  - Netherlands
TA  - Anal Chim Acta
JT  - Analytica chimica acta
JID - 0370534
RN  - 0 (Bridged Bicyclo Compounds)
RN  - 0 (Insecticides)
RN  - 0 (Pyrethrins)
RN  - 0 (Tea)
RN  - 0 (cinerin A)
RN  - 0 (cinerin B)
RN  - T018I9EQOL (pyrethrin I)
SB  - IM
MH  - Bridged Bicyclo Compounds/analysis/isolation & purification
MH  - Chromatography, High Pressure Liquid/*methods
MH  - Insecticides/*analysis/isolation & purification
MH  - Pyrethrins/*analysis/isolation & purification
MH  - Solid Phase Extraction
MH  - Tandem Mass Spectrometry/*methods
MH  - Tea/*chemistry
EDAT- 2010/09/28 06:00
MHDA- 2011/01/13 06:00
CRDT- 2010/09/28 06:00
PHST- 2010/04/09 00:00 [received]
PHST- 2010/08/09 00:00 [revised]
PHST- 2010/08/12 00:00 [accepted]
PHST- 2010/09/28 06:00 [entrez]
PHST- 2010/09/28 06:00 [pubmed]
PHST- 2011/01/13 06:00 [medline]
AID - S0003-2670(10)01017-2 [pii]
AID - 10.1016/j.aca.2010.08.015 [doi]
PST - ppublish
SO  - Anal Chim Acta. 2010 Sep 23;678(1):56-62. doi: 10.1016/j.aca.2010.08.015. Epub 
      2010 Aug 20.