PMID- 25902649
OWN - NLM
STAT- MEDLINE
DCOM- 20150901
LR  - 20190923
IS  - 1000-8713 (Print)
IS  - 1000-8713 (Linking)
VI  - 32
IP  - 12
DP  - 2014 Dec
TI  - [Combination of programmable temperature vaporizer-large volume injection gas 
      chromatography-mass spectrometry and automated mass spectral deconvolution and 
      identification system for the determination of 32 pesticides in fruits and 
      vegetables].
PG  - 1390-9
AB  - An analytical method was developed for the simultaneous determination of 32 
      pesticides including organophosphorus, organochlorine, pyrethroid and carbamate 
      pesticides in fruits and vegetables using gas chromatography-mass spectrometry 
      (GC-MS). The sample was extracted with acetonitrile, and the organic layer was 
      cleaned up with ENVI-Carb and LC-NH2 cartridges. A large volume of 20 microL purified 
      solution was injected into the GC system using programmable temperature vaporizer 
      (PTV). The mass spectrometric detection was operated with full scan mode. The 
      automated mass spectral deconvolution and identification system (AMDIS) and an 
      isotopic internal standard were used for the qualitative and quantitative 
      determination of the 32 pesticides, respectively. The conditions for PTV-large 
      volume injection were studied. Furthermore, the selectivity and durability of the 
      method were also assessed. Under the optimized conditions, the experimental 
      results showed that all the linearities were good within their test ranges, with 
      correlation coefficients more than 0. 995, and the method detection limits of the 
      pesticides were 2.0-5.0 microg/kg. The spiked recoveries (n=6) at three levels in the 
      0. 010 - 0. 50 mg/kg using spinach, snap bean and cucumber samples as blank 
      matrices were in the range of 65. 2% - 120. 3% with the relative standard 
      deviations (RSDs) varying from 4. 1% to 22. 3%, showing good accuracy of the 
      method. The advantages of the proposed method include high throughput, high 
      sensitivity, reliability, robustness, and the ability to meet the demand of 
      multi-residue pesticide analysis in fruits and vegetables.
FAU - Cao, Zhaoyun
AU  - Cao Z
FAU - Mou, Renxiang
AU  - Mou R
FAU - Wu, Li
AU  - Wu L
FAU - Lin Xiaoyan
AU  - Lin Xiaoyan
FAU - Zhu, Zhiwei
AU  - Zhu Z
FAU - Chen, Mingxue
AU  - Chen M
LA  - chi
PT  - Journal Article
PL  - China
TA  - Se Pu
JT  - Se pu = Chinese journal of chromatography
JID - 9424804
RN  - 0 (Acetonitriles)
RN  - 0 (Pesticide Residues)
RN  - Z072SB282N (acetonitrile)
SB  - IM
MH  - Acetonitriles
MH  - Food Analysis/*methods
MH  - Fruit/*chemistry
MH  - Gas Chromatography-Mass Spectrometry
MH  - Mass Spectrometry
MH  - Nebulizers and Vaporizers
MH  - Pesticide Residues/*analysis
MH  - Reproducibility of Results
MH  - Temperature
MH  - Vegetables/*chemistry
EDAT- 2015/04/24 06:00
MHDA- 2015/09/02 06:00
CRDT- 2015/04/24 06:00
PHST- 2015/04/24 06:00 [entrez]
PHST- 2015/04/24 06:00 [pubmed]
PHST- 2015/09/02 06:00 [medline]
AID - 10.3724/sp.j.1123.2014.09005 [doi]
PST - ppublish
SO  - Se Pu. 2014 Dec;32(12):1390-9. doi: 10.3724/sp.j.1123.2014.09005.