PMID- 26930967
OWN - NLM
STAT- MEDLINE
DCOM- 20160426
LR  - 20231213
IS  - 1000-8713 (Print)
IS  - 1000-8713 (Linking)
VI  - 33
IP  - 10
DP  - 2015 Oct
TI  - [Simultaneous determination of glyphosate and glufosinate-ammonium residues in 
      tea by ultra performance liquid chromatography-tandem mass spectrometry coupled 
      with pre-column derivatization].
PG  - 1090-6
AB  - A method was developed for the determination of glyphosate (GLY) and 
      glufosinate-ammonium (GLUF) in tea using ultra performance liquid 
      chromatography-tandem mass spectrometry (UPLC-MS/MS). The sample was extracted 
      with ultrapure water and dichloromethane for 30 min under ultrasonication, 
      followed by a simple cleanup with a C18 solid phase extraction (SPE) cartridge, 
      and then GLY and GLUF were derivatized using 9-fluorenylmethoxycarbonyl (FMOC-Cl) 
      in borate buffer for 2 h. The derivatives of GLY and GLUF were separated on a 
      Waters C18 column (50 mm x 2.1 mm, 1.7 mum) in a gradient elution mode, and 
      finally detected with positive electrospray ionization-mass spectrometry 
      (ESI-MS/MS ) in multiple reaction monitoring (MRM) mode. The quantification 
      analysis was performed by external standard method. The method showed a good 
      linearity (r > 0. 990) in the range of 0.003 125-0.1 mg/L. The limits of 
      detection (LODs) of GLY and GLUF were 0.03 mg/kg. At the spiked levels of 0.375, 
      1.5 and 4.5 mg/kg, the recoveries of GLY and GLUF were 87.37%-99.11% and 81.44% 
      -86.17% respectively, and the relative standard deviations (RSDs) (n = 6) of GLY 
      and GLUF were 0.68%-1.35% and 1.01%-2.33%, respectively. This method is simple, 
      rapid and characterized with acceptable sensitivity and accuracy to meet the 
      requirements for the analysis of GLY and GLUF simultaneously in tea.
FAU - Wu, Xiaogang
AU  - Wu X
FAU - Chen, Xiaoquan
AU  - Chen X
FAU - Xiao, Haijun
AU  - Xiao H
FAU - Liu, Binqiu
AU  - Liu B
LA  - chi
PT  - English Abstract
PT  - Journal Article
PL  - China
TA  - Se Pu
JT  - Se pu = Chinese journal of chromatography
JID - 9424804
RN  - 0 (Aminobutyrates)
RN  - 0 (Pesticide Residues)
RN  - 0 (Tea)
RN  - 51276-47-2 (phosphinothricin)
RN  - TE7660XO1C (Glycine)
SB  - IM
MH  - Aminobutyrates/*analysis
MH  - Chromatography, High Pressure Liquid
MH  - *Food Contamination
MH  - Glycine/*analogs & derivatives/analysis
MH  - Pesticide Residues/*analysis
MH  - Tandem Mass Spectrometry
MH  - Tea/*chemistry
MH  - Glyphosate
EDAT- 2016/03/05 06:00
MHDA- 2016/04/27 06:00
CRDT- 2016/03/03 06:00
PHST- 2016/03/03 06:00 [entrez]
PHST- 2016/03/05 06:00 [pubmed]
PHST- 2016/04/27 06:00 [medline]
AID - 10.3724/sp.j.1123.2015.04045 [doi]
PST - ppublish
SO  - Se Pu. 2015 Oct;33(10):1090-6. doi: 10.3724/sp.j.1123.2015.04045.