PMID- 25863925
OWN - NLM
STAT- MEDLINE
DCOM- 20150828
LR  - 20181202
IS  - 1873-3778 (Electronic)
IS  - 0021-9673 (Linking)
VI  - 1395
DP  - 2015 May 22
TI  - Determination of volatile organic compounds in water using headspace knotted 
      hollow fiber microextraction.
PG  - 41-7
LID - S0021-9673(15)00493-8 [pii]
LID - 10.1016/j.chroma.2015.03.067 [doi]
AB  - An efficient and effective headspace microextraction technique named static 
      headspace knotted hollow fiber microextraction (HS-K-HFME) has been developed for 
      the determination of volatile organic compounds (VOCs) in water samples. The 
      knot-shaped hollow fiber is filled with 25muL of the extraction solvent. The 
      excess solvent forms a large droplet (13muL) and is held in the center of the 
      knot. Even after 20min of extraction time at high temperature (95 degrees C) without 
      cooling, there was still enough volume of extraction solvent for gas 
      chromatography-mass spectrometry (GC-MS) analysis, which extends the choice of 
      solvents for headspace LPME. Moreover, the knot-shaped fiber has a larger 
      extraction contact interface, which increases the rate of mass transfer between 
      the headspace and extraction solvent film attached to the fiber, thus improving 
      the extraction efficiency. The effects of extraction solvent, temperature, 
      stirring rate, salt concentration and extraction time on extraction performance 
      were optimized. The calibration curves exhibited coefficients of determination 
      (R(2)) ranging from 0.9957 to 0.9999 and the limit of detection (LOD) ranged from 
      0.2 to 10mugL(-1). Relative standard deviations (RSDs) ranged from 4.5% to 11.6% 
      for intraday measurements (n=5). Interday (n=15) values were between 2.2% and 
      12.9%. The relative recoveries (RRs) ranged from 90.3% to 106.0% for river water 
      and 95.9% to 103.6% for wastewater.
CI  - Copyright (c) 2015 Elsevier B.V. All rights reserved.
FAU - Chen, Pai-Shan
AU  - Chen PS
AD  - Department and Graduate Institute of Forensic Medicine, National Taiwan 
      University, Taipei 10002, Taiwan; Forensic and Clinical Toxicology Center, 
      National Taiwan University College of Medicine and National Taiwan University 
      Hospital, Taiwan. Electronic address: paishanchen@ntu.edu.tw.
FAU - Tseng, Yu-Hsiang
AU  - Tseng YH
AD  - Department and Graduate Institute of Forensic Medicine, National Taiwan 
      University, Taipei 10002, Taiwan.
FAU - Chuang, Yuh-Lin
AU  - Chuang YL
AD  - Department and Graduate Institute of Forensic Medicine, National Taiwan 
      University, Taipei 10002, Taiwan.
FAU - Chen, Jung-Hsuan
AU  - Chen JH
AD  - Department and Graduate Institute of Forensic Medicine, National Taiwan 
      University, Taipei 10002, Taiwan; Forensic and Clinical Toxicology Center, 
      National Taiwan University College of Medicine and National Taiwan University 
      Hospital, Taiwan.
LA  - eng
PT  - Journal Article
DEP - 20150331
PL  - Netherlands
TA  - J Chromatogr A
JT  - Journal of chromatography. A
JID - 9318488
RN  - 0 (Salts)
RN  - 0 (Solvents)
RN  - 0 (Volatile Organic Compounds)
RN  - 059QF0KO0R (Water)
SB  - IM
MH  - Environmental Monitoring/*methods
MH  - Gas Chromatography-Mass Spectrometry
MH  - Limit of Detection
MH  - Liquid Phase Microextraction/instrumentation/*methods
MH  - Salts/chemistry
MH  - Solvents/chemistry
MH  - Temperature
MH  - Volatile Organic Compounds/*analysis
MH  - Water/*chemistry
OTO - NOTNLM
OT  - Gas chromatography-mass spectrometry
OT  - Headspace
OT  - Hollow fiber microextraction
OT  - River water
OT  - Volatile organic compounds
OT  - Wastewater
EDAT- 2015/04/13 06:00
MHDA- 2015/09/01 06:00
CRDT- 2015/04/13 06:00
PHST- 2015/01/10 00:00 [received]
PHST- 2015/03/24 00:00 [revised]
PHST- 2015/03/24 00:00 [accepted]
PHST- 2015/04/13 06:00 [entrez]
PHST- 2015/04/13 06:00 [pubmed]
PHST- 2015/09/01 06:00 [medline]
AID - S0021-9673(15)00493-8 [pii]
AID - 10.1016/j.chroma.2015.03.067 [doi]
PST - ppublish
SO  - J Chromatogr A. 2015 May 22;1395:41-7. doi: 10.1016/j.chroma.2015.03.067. Epub 
      2015 Mar 31.