PMID- 26536763
OWN - NLM
STAT- MEDLINE
DCOM- 20151114
LR  - 20190923
IS  - 1000-8713 (Print)
IS  - 1000-8713 (Linking)
VI  - 33
IP  - 6
DP  - 2015 Jun
TI  - [Rapid determination of 204 pesticide residues in tea by ultra performance liquid 
      chromatography coupled with quadrupole-time of flight mass spectrometry].
PG  - 597-612
AB  - An analytical method was established for the simultaneous determination of 204 
      pesticide residues in tea by ultra performance liquid chromatography coupled with 
      quadrupole-time of flight mass spectrometry (UPLC-Q-TOF/MS). The samples were 
      extracted with acetonitrile, and cleaned-up by solid phase extraction (SPE) with 
      a Carb-PSA cartridge, eluted with acetonitrile-toluene (3:1, v/v), determined by 
      UPLC-Q-TOF/MS and quantified by external standard method. A data base of the 
      accurate mass numbers and a library which contains the 204 pesticides were 
      established. The automatic retrieval of detection results was carried on 
      according to the characteristics of the compound, such as accurate mass, 
      retention time, isotopic ratio, and so on. Based on the above results, the 
      qualitative identifications of the 204 pesticides were accomplished without the 
      contrast of standard substances. The results indicated that this method can be 
      used to determine the 204 pesticides in tea. At the three spiked levels of 10, 
      20, 50 microg/kg, mean recoveries for the 204 pesticides in tea were between 68. 1% 
      and 117. 2%, with the relative standard deviations (RSDs) ranging from 3.1% to 
      18.9%. The limits of quantification for the 204 pesticides were lower than 10 
      microg/kg. The method has been applied to four positive samples, and the results 
      generally accord with the detection results by the method of GB/T 23205-2008. 
      This method has the characteristics of high efficiency, as well as high 
      sensitivity and accuracy, which can meet the requirement of the determination of 
      the 204 pesticides in tea.
FAU - Yu, Lu
AU  - Yu L
FAU - Song, Wei
AU  - Song W
FAU - Lu, Yaning
AU  - Lu Y
FAU - Zhao, Muyu
AU  - Zhao M
FAU - Zhou, Fangfang
AU  - Zhou F
FAU - Hu, Yanyun
AU  - Hu Y
FAU - Zheng, Ping
AU  - Zheng P
LA  - chi
PT  - English Abstract
PT  - Journal Article
PL  - China
TA  - Se Pu
JT  - Se pu = Chinese journal of chromatography
JID - 9424804
RN  - 0 (Pesticide Residues)
RN  - 0 (Tea)
SB  - IM
MH  - Chromatography, High Pressure Liquid
MH  - Mass Spectrometry
MH  - Pesticide Residues/*analysis
MH  - Solid Phase Extraction
MH  - Tea/*chemistry
EDAT- 2015/11/06 06:00
MHDA- 2015/11/15 06:00
CRDT- 2015/11/06 06:00
PHST- 2015/11/06 06:00 [entrez]
PHST- 2015/11/06 06:00 [pubmed]
PHST- 2015/11/15 06:00 [medline]
AID - 10.3724/sp.j.1123.2015.02056 [doi]
PST - ppublish
SO  - Se Pu. 2015 Jun;33(6):597-612. doi: 10.3724/sp.j.1123.2015.02056.