TY - JOUR
T1 - Analysis and monitoring of volatile analytes from aqueous solutions by extractions into the gas phase using microdialysis membranes and coupling to fast GC
AU - Jones, Melissa A.
AU - Kramer, Ashley
AU - Humbert, Matthew
AU - Vanadurongvan, Tyler
AU - Maurer, Jonathan
AU - Bowser, Michael T.
AU - Borgerding, Anthony J.
PY - 2008/1/1
Y1 - 2008/1/1
N2 - Microdialysis membranes (3 mm length x 200 μm i.d.) have been used to extract volatile analytes from aqueous samples into the gas phase and interfaced with fast gas chromatography. Gas-phase extracts generated from aqueous samples reach steady-state concentrations and are transported to the detector in 5 s. The recovery of the system ranges from 1.28% for toluene to less than 0.1% for ethanol. The lowest detectable concentration without preconcentration was 5 mM for most compounds using a flame ionization detector, and as low as 0.01 mM for more volatile hydrophobic analytes. When interfaced with a fast GC system, changes in aqueous phase concentrations were monitored with a temporal resolution of 10 s.
AB - Microdialysis membranes (3 mm length x 200 μm i.d.) have been used to extract volatile analytes from aqueous samples into the gas phase and interfaced with fast gas chromatography. Gas-phase extracts generated from aqueous samples reach steady-state concentrations and are transported to the detector in 5 s. The recovery of the system ranges from 1.28% for toluene to less than 0.1% for ethanol. The lowest detectable concentration without preconcentration was 5 mM for most compounds using a flame ionization detector, and as low as 0.01 mM for more volatile hydrophobic analytes. When interfaced with a fast GC system, changes in aqueous phase concentrations were monitored with a temporal resolution of 10 s.
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U2 - 10.1021/ac071530h
DO - 10.1021/ac071530h
M3 - Article
C2 - 18031020
AN - SCOPUS:41349115555
SN - 0003-2700
VL - 80
SP - 123
EP - 128
JO - Analytical Chemistry
JF - Analytical Chemistry
IS - 1
ER -