PMID- 11144512
OWN - NLM
STAT- MEDLINE
DCOM- 20010215
LR  - 20190513
IS  - 0021-9665 (Print)
IS  - 0021-9665 (Linking)
VI  - 38
IP  - 12
DP  - 2000 Dec
TI  - Solid-phase microextraction and headspace solid-phase microextraction for the 
      determination of high molecular-weight polycyclic aromatic hydrocarbons in water 
      and soil samples.
PG  - 528-34
AB  - The feasibility of direct-immersion (DI) solid-phase microextraction (SPME) and 
      headspace (HS) SPME for the determination of high-ring polycyclic aromatic 
      hydrocarbons (PAHs) (4- to 6-ring PAHs) in water and soil samples is studied. 
      Three SPME fibers--100- and 30-microm polydimethylsiloxane (PDMS) and 85-microm 
      polyacrylate (PA) fibers-are compared for the effective extraction of PAHs. 
      Parameters affecting the sorption of PAHs into the fiber such as sampling time, 
      sampling volume, and temperature are also evaluated. The extracted amounts of 
      high-ring PAHs decrease with the decreasing of film thickness, and the 100-microm 
      PDMS has the highest extraction efficiency than 85-microm PA and 30-microm PDMS 
      fibers. Also, the extraction efficiency decreases with the increasing molecular 
      weights of PAHs. Of the 10 high-ring PAHs, only fluoranthene and pyrene can reach 
      equilibrium within 120 min at 25 degrees C for DI-SPME in a water sample. 
      Increasing the temperature to 60 degrees C can increase the sensitivity of PAHs 
      and shorten the equilibrium time. A 0.7- to 25-fold increase in peak area is 
      obtained for DI-SPME when the working temperature is increased to 60 degrees C. 
      For HS-SPME, the extraction efficiency of PAHs decrease when the headspace volume 
      of the sampling system increases. All high-ring PAHs can be detected in a water 
      sample by increasing the temperature to 80 degrees C. However, only 4- and 5-ring 
      PAHs can be quantitated in a CRM soil sample when HS-SPME is used. The addition 
      of a surfactant with high hydrophilic property can effectively enhance the 
      sensitivity of high-ring PAHs. HS-SPME as well as DI-SPME with 100-microm PDMS or 
      85-microm PA fibers are shown to be suitable methods for analyzing high-ring PAHs 
      in a water sample; however, this technique can only apply in a soil sample for 
      PAHs having up to 5 rings.
FAU - Doong, R
AU  - Doong R
AD  - Department of Atomic Science, National Tsing Hua University, Hsinchu, Taiwan. 
      radoong@mx.nthu.edu.tw
FAU - Chang, S
AU  - Chang S
FAU - Sun, Y
AU  - Sun Y
LA  - eng
PT  - Journal Article
PT  - Research Support, Non-U.S. Gov't
PL  - United States
TA  - J Chromatogr Sci
JT  - Journal of chromatographic science
JID - 0173225
RN  - 0 (Polycyclic Compounds)
RN  - 0 (Soil Pollutants)
RN  - 0 (Water Pollutants, Chemical)
SB  - IM
MH  - Chromatography, Gas/*methods
MH  - Molecular Weight
MH  - Polycyclic Compounds/*analysis
MH  - Soil Pollutants/*analysis
MH  - Water Pollutants, Chemical/*analysis
EDAT- 2001/01/06 11:00
MHDA- 2001/03/03 10:01
CRDT- 2001/01/06 11:00
PHST- 2001/01/06 11:00 [pubmed]
PHST- 2001/03/03 10:01 [medline]
PHST- 2001/01/06 11:00 [entrez]
AID - 10.1093/chromsci/38.12.528 [doi]
PST - ppublish
SO  - J Chromatogr Sci. 2000 Dec;38(12):528-34. doi: 10.1093/chromsci/38.12.528.