PMID- 25739274
OWN - NLM
STAT- MEDLINE
DCOM- 20150901
LR  - 20190923
IS  - 1000-8713 (Print)
IS  - 1000-8713 (Linking)
VI  - 32
IP  - 10
DP  - 2014 Oct
TI  - [Rapid determination of pesticide multiresidues in porphyra by dispersive 
      solid-phase extraction coupled with online gel permeation chromatography-gas 
      chromatography-mass spectrometry].
PG  - 1124-30
AB  - A rapid method for the simultaneous identification and quantification of 
      pesticide multiresidues in porphyra was developed using gel permeation 
      chromatography (GPC) coupled to gas chromatography-mass spectrometry (GPC-GC/MS). 
      Nineteen pesticides (organochlorines, organophosphoruses, triazines and 
      pyrethroids) were selected as the target analytes. The pretreatment method was 
      applied consisting of organic solvent extraction followed by dispersive 
      solid-phase extraction with graphitized carbon black (GCB) and primary secondary 
      amine (PSA) adsorbents. GPC was also employed online to remove the large 
      molecules such as pigments and lipids. The quantitative analysis was carried out 
      by external standard method using gas chromatography coupled with mass 
      spectrometry in selective ion monitoring (SIM) mode. Moreover, a large volume of 
      sample was allowed to be injected using the program of GPC programmed-temperature 
      vaporizer of gas chromatography to improve the sensitivity of measurements. The 
      results showed that the calibration curves were linear (r > 0.995) in the range 
      of 10-1,000 mug/L for all the pesticides. The limits of detection (LODs) for the 
      pesticides in porphyra were from 0.005 to 0.03 mg/kg, and the average recoveries 
      were between 70% and 120%. The advantages of the method are simple, sensitive and 
      shorter operation time for analysis of pesticide residues in porphyra samples.
FAU - Sun, Xiaojie
AU  - Sun X
FAU - Guo, Mengmeng
AU  - Guo M
FAU - Wang, Suyue
AU  - Wang S
FAU - Tan, Zhijun
AU  - Tan Z
FAU - Li, Zhaoxin
AU  - Li Z
FAU - Zhai, Yuxiu
AU  - Zhai Y
LA  - chi
PT  - Journal Article
PL  - China
TA  - Se Pu
JT  - Se pu = Chinese journal of chromatography
JID - 9424804
RN  - 0 (Pesticide Residues)
RN  - 0 (Pyrethrins)
RN  - 0 (Solvents)
SB  - IM
MH  - *Chromatography, Gel
MH  - *Gas Chromatography-Mass Spectrometry
MH  - Limit of Detection
MH  - Pesticide Residues/*analysis
MH  - Porphyra/*chemistry
MH  - Pyrethrins
MH  - Solid Phase Extraction
MH  - Solvents
EDAT- 2015/03/06 06:00
MHDA- 2015/09/02 06:00
CRDT- 2015/03/06 06:00
PHST- 2015/03/06 06:00 [entrez]
PHST- 2015/03/06 06:00 [pubmed]
PHST- 2015/09/02 06:00 [medline]
AID - 10.3724/sp.j.1123.2014.06032 [doi]
PST - ppublish
SO  - Se Pu. 2014 Oct;32(10):1124-30. doi: 10.3724/sp.j.1123.2014.06032.