PMID- 17432570
OWN - NLM
STAT- MEDLINE
DCOM- 20100610
LR  - 20231213
IS  - 1000-8713 (Print)
IS  - 1000-8713 (Linking)
VI  - 25
IP  - 1
DP  - 2007 Jan
TI  - [Determination of pyrethroid pesticide residues in tobacco leaves and tea using 
      stir bar sorptive extraction-thermal desorption and gas chromatography-mass 
      spectrometry].
PG  - 25-9
AB  - A novel method for the determination of 5 pyrethroid pesticide residues in 
      tobacco leaf and tea samples was established. The pesticide residues in the 
      samples were extracted and concentrated with stir bar, desorbed by thermal 
      desorption system, and then determined by gas chromatography-mass spectrometry 
      (GC-MS). The pesticide residues in the samples were extracted with a stir bar at 
      1 100 r/min for 1 h. The desorption was carried out at 300 degrees C for 4 min 
      under a helium flow of 50 mL/min while maintaining a cryofocusing temperature of 
      0 degrees C in the CIS-4 injector of the GC-MS system. Finally, the CIS-4 
      injector was raised to a temperature of 300 degrees C and then the analytes were 
      separated by GC and detected by MS. The limits of detection of this method for 
      the tobacco leaves ranged from 3.3 ng to 11.4 ng. The recoveries of pesticides 
      from the tobacco leaves ranged from 94.8% to 103.4% and the relative standard 
      deviations (RSDs) of peak areas ranged from 5.3% to 8.6% (n = 6). The limits of 
      detection of this method for tea ranged from 4.2 ng to 10.5 ng. The recoveries of 
      pesticides from tea ranged from 98.2% to 110.1% and the RSDs of peak areas were 
      less than 9.6% (n = 6). Therefore, this method can satisfy the requirements for 
      the rapid analysis of pesticide residues in the tobacco leaf and tea samples.
FAU - Hou, Ying
AU  - Hou Y
AD  - Yunnan Reascend Tobacco Technology (Group) Co., Ltd, Kunming 650106, China.
FAU - Cao, Qiue
AU  - Cao Q
FAU - Xie, Xiaoguang
AU  - Xie X
FAU - Wang, Baoxing
AU  - Wang B
FAU - Xu, Jicang
AU  - Xu J
FAU - Yang, Lei
AU  - Yang L
FAU - Yang, Yan
AU  - Yang Y
FAU - Yang, Yong
AU  - Yang Y
LA  - chi
PT  - English Abstract
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 (Tea)
RN  - 451W47IQ8X (Sodium Chloride)
SB  - IM
MH  - Gas Chromatography-Mass Spectrometry/*methods
MH  - Pesticide Residues/*analysis
MH  - Plant Leaves/*chemistry
MH  - Pyrethrins/*analysis
MH  - Sodium Chloride/chemistry
MH  - Tea/*chemistry
MH  - Nicotiana/*chemistry
EDAT- 2007/04/17 09:00
MHDA- 2010/06/11 06:00
CRDT- 2007/04/17 09:00
PHST- 2007/04/17 09:00 [pubmed]
PHST- 2010/06/11 06:00 [medline]
PHST- 2007/04/17 09:00 [entrez]
AID - 10.1016/s1872-2059(07)60002-9 [doi]
PST - ppublish
SO  - Se Pu. 2007 Jan;25(1):25-9. doi: 10.1016/s1872-2059(07)60002-9.