PMID- 23898638
OWN - NLM
STAT- MEDLINE
DCOM- 20150708
LR  - 20221207
IS  - 1000-8713 (Print)
IS  - 1000-8713 (Linking)
VI  - 31
IP  - 4
DP  - 2013 Apr
TI  - [Rapid screening and confirmation of 281 pesticide residues in apples, tomatos 
      and cabbages by liquid chromatography/ quadrupole time-of-flight mass 
      spectrometry].
PG  - 372-9
AB  - The application of QuEChERS coupled to liquid chromatography/quadrupole 
      time-of-flight mass spectrometry (LC-Q-TOF/MS) for screening 281 pesticide 
      residues in apples, tomatos, and cabbages has been investigated. The established 
      method includes the extraction by acetonitrile/acetic acid (99:1, v/v), and 
      clean-up by primary secondary amine (PSA) sorbent. The resultant residues were 
      further analyzed by LC-Q-TOF/MS. For apples, tomatos, and cabbages, the 
      percentages of pesticides with the average recoveries (n = 5) in the range of 
      70%-120% were 98.6%, 99.3%, and 98.2%, respectively; and the relative standard 
      deviations (RSDs) for the recoveries were not more than 20%; in the concentration 
      range of 0.25-10 MRL, the percentages of the pesticides with the correlation 
      coefficients (r2) greater than 0.99 were 95.7%, 96.1%, and 98.2%, respectively; 
      the LODs were 0.03-4.47 microg/kg, 0.01-4.49 microg/kg and 0.02-3.61 microg/kg, 
      respectively. Rapid screening and confirmation can be achieved with accurate mass 
      database and library search without the standard compounds. The method has been 
      applied to 30 fruit and vegetable samples randomly purchased from the local 
      markets, and the 13 pesticides were detected. It was found that the level of 
      methamidophos in one cabbage sample exceeded the MRL regulated by China of GB 
      2763-2012 and the MRL regulated by European Union (EU), and the level of rotenone 
      in one tomato sample exceeded the MRL regulated by EU.
FAU - Zhao, Zhiyuan
AU  - Zhao Z
AD  - College of Chemistry and Environmental Science, Hebei University, Baoding 071002, 
      China.
FAU - Shi, Zhihong
AU  - Shi Z
FAU - Kang, Jian
AU  - Kang J
FAU - Peng, Xing
AU  - Peng X
FAU - Cao, Xinyue
AU  - Cao X
FAU - Fan, Chunlin
AU  - Fan C
FAU - Pang, Guofang
AU  - Pang G
FAU - Lu, Meiling
AU  - Lu M
LA  - chi
PT  - Journal Article
PL  - China
TA  - Se Pu
JT  - Se pu = Chinese journal of chromatography
JID - 9424804
RN  - 0 (Pesticide Residues)
SB  - IM
MH  - *Brassica
MH  - China
MH  - Chromatography, Liquid
MH  - Food Contamination/*analysis
MH  - Fruit
MH  - Limit of Detection
MH  - *Solanum lycopersicum
MH  - *Malus
MH  - Mass Spectrometry
MH  - Pesticide Residues/*analysis
EDAT- 2013/08/01 06:00
MHDA- 2015/07/15 06:00
CRDT- 2013/08/01 06:00
PHST- 2013/08/01 06:00 [entrez]
PHST- 2013/08/01 06:00 [pubmed]
PHST- 2015/07/15 06:00 [medline]
AID - 10.3724/sp.j.1123.2013.01034 [doi]
PST - ppublish
SO  - Se Pu. 2013 Apr;31(4):372-9. doi: 10.3724/sp.j.1123.2013.01034.