PMID- 18161314
OWN - NLM
STAT- PubMed-not-MEDLINE
DCOM- 20100617
LR  - 20161018
IS  - 1000-8713 (Print)
IS  - 1000-8713 (Linking)
VI  - 25
IP  - 5
DP  - 2007 Sep
TI  - [A multi-step distillation method for sample preparation in gas chromatographic 
      analysis].
PG  - 654-6
AB  - A sample pretreatment device based on multi-step distillation principle was 
      constructed and evaluated. Trace components in the sample were extracted, 
      separated and enriched at the cold receptor of the molecular diffusion 
      distillation device. The cold receptor was designed as an exchangeable part to 
      avoid the cross interferences from one sample to another one. A model sample 
      containing four kinds of organophosphorus pesticides in ethyl actate was tested 
      in the device, and the distillated and enriched solution was analyzed by a gas 
      chromatograph. It was proven that the interferential components to gas 
      chromatography such as protein, lipid and pigment could be removed effectively, 
      and the enrichment factor for trace target components was more than 150 times. 
      The recoveries of the method were from 90% to 117%, and the relative standard 
      deviations (RSDs) from 1.3% to 10%. The limit of detection (LOD) of this method 
      was 1 ng/mL without further concentration. The reused ratio of the organic 
      reagents was more than 95%. Practical application was performed by using a spiked 
      tea sample. The device can treat more than 100 g of samples with a boiling point 
      range of 120 - 600 degrees C.
FAU - Yang, Zhiyan
AU  - Yang Z
AD  - Laboratory of Analytical Technologies, Technical University of Tianjin, Tianjin 
      300457, China. yangzy@tust.edu.cn
FAU - Yan, Zhongli
AU  - Yan Z
FAU - Wang, Jianqing
AU  - Wang J
LA  - chi
PT  - English Abstract
PT  - Journal Article
PL  - China
TA  - Se Pu
JT  - Se pu = Chinese journal of chromatography
JID - 9424804
EDAT- 2007/12/29 09:00
MHDA- 2007/12/29 09:01
CRDT- 2007/12/29 09:00
PHST- 2007/12/29 09:00 [pubmed]
PHST- 2007/12/29 09:01 [medline]
PHST- 2007/12/29 09:00 [entrez]
PST - ppublish
SO  - Se Pu. 2007 Sep;25(5):654-6.