PMID- 22689906
OWN - NLM
STAT- MEDLINE
DCOM- 20130219
LR  - 20161125
IS  - 1945-239X (Electronic)
IS  - 0021-9665 (Linking)
VI  - 50
IP  - 10
DP  - 2012 Nov-Dec
TI  - Simultaneous determination of procymidone, pyridaben and beta-cypermethrin 
      residues in tea solution by GC-ECD.
PG  - 940-4
LID - 10.1093/chromsci/bms094 [doi]
AB  - A sensitive and effective method for the simultaneous quantitative determination 
      of procymidone, pyridaben and beta-cypermethrin residues in tea solutions was 
      developed and validated using a gas chromatograph (GC) equipped with an electron 
      capture detector (ECD). The analysis of the three pesticides in tea solutions 
      involved extraction with petroleum ether-ethyl acetate (3:1, v/v), cleanup using 
      a Florisil solid-phase extraction cartridge and subsequent determination by 
      GC-ECD. Recovery studies were carried out at three spiked levels (0.05, 0.1 and 
      0.5 mg/kg). The overall average recoveries using this method in green teas and 
      black teas at the three concentration levels ranged from 85.63 to 105.80% with 
      relative standard deviations in the range of 1.29-4.97% (n = 5) for all analytes. 
      The quantification limits of procymidone, pyridaben and beta-cypermethrin were 
      0.025, 0.038 and 0.030 mg/kg, respectively, which were lower than the maximum 
      residue limits (MRLs) of 0.1 mg/kg procymidone, 0.05 mg/kg pyridaben and 0.5 
      mg/kg beta-cypermethrin in tea samples established by European Union 
      legislations. This study provides a theoretical basis for China to draw up MRLs 
      for procymidone, pyridaben and beta-cypermethrin in tea solutions.
FAU - Zhang, Changpeng
AU  - Zhang C
AD  - State Key Lab Breeding Base for Zhejiang Sustainable Plant Pest Control, 
      Institute of Quality and Standard for Agro-Products, Zhejiang Academy of 
      Agricultural Sciences, Hangzhou, China.
FAU - Zhao, Hua
AU  - Zhao H
FAU - Wu, Min
AU  - Wu M
FAU - Hu, Xiuqing
AU  - Hu X
FAU - Cai, Xiaoming
AU  - Cai X
FAU - Ping, Lifeng
AU  - Ping L
FAU - Li, Zhen
AU  - Li Z
LA  - eng
PT  - Journal Article
PT  - Research Support, Non-U.S. Gov't
DEP - 20120611
PL  - United States
TA  - J Chromatogr Sci
JT  - Journal of chromatographic science
JID - 0173225
RN  - 0 (Bridged Bicyclo Compounds)
RN  - 0 (Pesticide Residues)
RN  - 0 (Pyrethrins)
RN  - 0 (Pyridazines)
RN  - 0 (Tea)
RN  - 1TR49121NP (cypermethrin)
RN  - 2E4JBA5272 (pyridaben)
RN  - EC2FI67U2Y (procymidone)
SB  - IM
MH  - Bridged Bicyclo Compounds/*analysis
MH  - Chromatography, Gas/*methods
MH  - Limit of Detection
MH  - Linear Models
MH  - Pesticide Residues/*analysis
MH  - Pyrethrins/*analysis
MH  - Pyridazines/*analysis
MH  - Reproducibility of Results
MH  - Tea/*chemistry
EDAT- 2012/06/13 06:00
MHDA- 2013/02/21 06:00
CRDT- 2012/06/13 06:00
PHST- 2012/06/13 06:00 [entrez]
PHST- 2012/06/13 06:00 [pubmed]
PHST- 2013/02/21 06:00 [medline]
AID - bms094 [pii]
AID - 10.1093/chromsci/bms094 [doi]
PST - ppublish
SO  - J Chromatogr Sci. 2012 Nov-Dec;50(10):940-4. doi: 10.1093/chromsci/bms094. Epub 
      2012 Jun 11.