PMID- 27562230
OWN - NLM
STAT- PubMed-not-MEDLINE
DCOM- 20180725
LR  - 20180725
IS  - 1520-6882 (Electronic)
IS  - 0003-2700 (Linking)
VI  - 88
IP  - 18
DP  - 2016 Sep 20
TI  - Determination of Polycyclic Aromatic Hydrocarbons in Sediment by 
      Pressure-Balanced Cold Fiber Solid Phase Microextraction.
PG  - 8936-41
LID - 10.1021/acs.analchem.6b01944 [doi]
AB  - An improved performance of the cold fiber solid phase microextraction (CF-SPME) 
      technique was accomplished with the use of the pressure-balanced procedure. In 
      order to obtain a pressure-balanced state during extraction at 200  degrees C, 7 mL of 
      air volume was withdrawn from 10 mL commercial vials, while 15 mL was withdrawn 
      from vials where 5 muL of diethylamine was added as a modifier/displacer. The 
      benefits of the balanced system were demonstrated for determination of polycyclic 
      aromatic hydrocarbons (PAHs) from solid matrixes, including sand and certified 
      sediment samples. Results showed the pressure-balanced procedure enhanced the 
      extraction efficiency of the method, especially for high volatility compounds, as 
      the leakage of analytes was mitigated under sample temperature conditions of 200 
       degrees C. Analytical precision was also improved, with relative standard deviations 
      (RSDs) ranging from 4% to 8% for all analytes under study. For the determination 
      of PAHs in certified sediment samples, pressure-balanced CF-SPME yielded more 
      accurate results in comparison to nonpressure-balanced CF-SPME. The proposed 
      methodology provided the additional benefit of improved recoveries at lower 
      pressures.
FAU - Xu, Shengrui
AU  - Xu S
AD  - Department of Chemistry, University of Waterloo , Waterloo, Ontario N2L 3G1, 
      Canada.
AD  - Faculty of Earth Sciences, China University of Geosciences , Wuhan, Hubei 430074, 
      P.R. China.
FAU - Shuai, Qin
AU  - Shuai Q
AD  - Faculty of Materials Science and Chemistry, China University of Geosciences , 
      Wuhan, Hubei 430074, P.R. China.
FAU - Pawliszyn, Janusz
AU  - Pawliszyn J
AD  - Department of Chemistry, University of Waterloo , Waterloo, Ontario N2L 3G1, 
      Canada.
LA  - eng
PT  - Journal Article
PT  - Research Support, Non-U.S. Gov't
DEP - 20160907
PL  - United States
TA  - Anal Chem
JT  - Analytical chemistry
JID - 0370536
EDAT- 2016/08/27 06:00
MHDA- 2016/08/27 06:01
CRDT- 2016/08/27 06:00
PHST- 2016/08/27 06:00 [entrez]
PHST- 2016/08/27 06:00 [pubmed]
PHST- 2016/08/27 06:01 [medline]
AID - 10.1021/acs.analchem.6b01944 [doi]
PST - ppublish
SO  - Anal Chem. 2016 Sep 20;88(18):8936-41. doi: 10.1021/acs.analchem.6b01944. Epub 
      2016 Sep 7.