PMID- 16674965
OWN - NLM
STAT- MEDLINE
DCOM- 20060925
LR  - 20090115
IS  - 0021-9673 (Print)
IS  - 0021-9673 (Linking)
VI  - 1121
IP  - 2
DP  - 2006 Jul 21
TI  - A simple supported liquid hollow fiber membrane microextraction for sample 
      preparation of trihalomethanes in water samples.
PG  - 236-41
AB  - A simple and efficient liquid-phase microextraction (LPME) technique using a 
      supported liquid hollow fiber membrane, in conjunction with gas 
      chromatography-electron capture detector has been developed for extraction and 
      determination of trihalomethanes (THMs) in water samples. THMs were extracted 
      from water samples through an organic extracting solvent impregnated in the pores 
      and filled inside the porous hollow fiber membrane. Our simple conditions were 
      conducted at 35 degrees C with no stirring and no salt addition in order to 
      minimize sample preparation steps. Parameters such as types of hollow fiber 
      membranes, extracting solvents and extraction time were studied and optimized. 
      The method exhibited enrichment factors ranged from 28- to 62-fold within 30 min 
      extraction time. The linearity of the method ranged from 0.2 to 100 microg l(-1). 
      The limits of detection were in the low microg l(-1) level, ranging between 0.01 
      and 0.2 microg l(-1). The recoveries of spiked THMs at 5 microg l(-1) in water 
      were between 98 and 105% with relative standard deviations (RSDs) less than 4%. 
      Furthermore, the method was applied for determination of THMs in drinking water 
      and tap water samples was reported.
FAU - Vora-adisak, Narongchai
AU  - Vora-adisak N
AD  - Chromatography and Separation Research Group, Department of Chemistry, Faculty of 
      Science, Chulalongkorn University, Phayathai Road, Patumwan, Bangkok 10330, 
      Thailand.
FAU - Varanusupakul, Pakorn
AU  - Varanusupakul P
LA  - eng
PT  - Journal Article
PT  - Research Support, Non-U.S. Gov't
DEP - 20060503
PL  - Netherlands
TA  - J Chromatogr A
JT  - Journal of chromatography. A
JID - 9318488
RN  - 0 (Membranes, Artificial)
RN  - 0 (Trihalomethanes)
SB  - IM
MH  - Chromatography, Gas/*instrumentation
MH  - *Membranes, Artificial
MH  - Trihalomethanes/*analysis
MH  - Water Supply/*analysis
EDAT- 2006/05/06 09:00
MHDA- 2006/09/26 09:00
CRDT- 2006/05/06 09:00
PHST- 2006/02/01 00:00 [received]
PHST- 2006/04/07 00:00 [revised]
PHST- 2006/04/10 00:00 [accepted]
PHST- 2006/05/06 09:00 [pubmed]
PHST- 2006/09/26 09:00 [medline]
PHST- 2006/05/06 09:00 [entrez]
AID - S0021-9673(06)00819-3 [pii]
AID - 10.1016/j.chroma.2006.04.009 [doi]
PST - ppublish
SO  - J Chromatogr A. 2006 Jul 21;1121(2):236-41. doi: 10.1016/j.chroma.2006.04.009. 
      Epub 2006 May 3.