PMID- 21171281
OWN - NLM
STAT- PubMed-not-MEDLINE
DCOM- 20120213
LR  - 20161018
IS  - 1000-8713 (Print)
IS  - 1000-8713 (Linking)
VI  - 28
IP  - 9
DP  - 2010 Sep
TI  - [Determination of five diacylhydrazine insecticide residues in welsh onion using 
      high performance liquid chromatography-tandem mass spectrometry].
PG  - 854-8
AB  - A high performance liquid chromatography-tandem mass spectrometry (HPLC-MS/ MS) 
      method was established for the determination of RH-5849, methoxyfenozide, 
      chromafenozide, fufenozide and tebufenozide residues in Welsh onion. The residues 
      in Welsh onion were extracted by blending with acetonitrile, concentrated after 
      salting out and purified with a Florisil column. The mobile phase was a mixture 
      of methanol and water (containing 0.1% formic acid) (60:40, v/v) at a flow rate 
      of 0.2 mL/min. The mass spectrometry was operated with electrospray in positive 
      ionization mode and five diacylhydrazine insecticides were identified in multiple 
      reaction monitoring (MRM) mode. The fragmentation pathways for the main product 
      ions were analyzed. No significant matrix effect was found when the five 
      diacylhydrazines were detected after the samples were purified by Florisil 
      columns. The calibration curves showed good linearity within the concentrations 
      of 2-400 microg/L with the correlation coefficients more than 0.999. The 
      recoveries of the five diacylhydrazines spiked in Welsh onion were 72.6%-95.5% at 
      spiked levels of 0.002-0.2 mg/kg. The relative standard deviations (RSDs) were 
      less than 15%. The limit of quantitation (LOQ) was 2 pg/kg for each 
      diacylhydrazine. This method is sensitive and accurate in the determination of 
      the five diacylhydrazine insecticides in Welsh onion.
FAU - Qian, Mingrong
AU  - Qian M
AD  - Institute of Quality and Standard on Agricultural Products, Zhejiang Academy of 
      Agricultural Sciences, Hangzhou 310021, China. qianmingrong@yahoo.com.cn
FAU - Zhang, Hu
AU  - Zhang H
FAU - Wu, Liqin
AU  - Wu L
FAU - Chen, Zhimin
AU  - Chen Z
FAU - Wang, Xiangyun
AU  - Wang X
LA  - chi
PT  - English Abstract
PT  - Journal Article
PL  - China
TA  - Se Pu
JT  - Se pu = Chinese journal of chromatography
JID - 9424804
EDAT- 2010/12/22 06:00
MHDA- 2010/12/22 06:01
CRDT- 2010/12/22 06:00
PHST- 2010/12/22 06:00 [entrez]
PHST- 2010/12/22 06:00 [pubmed]
PHST- 2010/12/22 06:01 [medline]
PST - ppublish
SO  - Se Pu. 2010 Sep;28(9):854-8.