期刊
JOURNAL OF CHROMATOGRAPHY A
卷 1175, 期 2, 页码 162-173出版社
ELSEVIER SCIENCE BV
DOI: 10.1016/j.chroma.2007.10.058
关键词
sorption coefficients; polydimethylsiloxane; linear free energy relationship; solid-phase microextraction
Water-to-polydimethylsiloxane (PDMS) and gas-to-PDMS sorption coefficients have been compiled for 170 gaseous and organic solutes. Both sets of sorption coefficients were analyzed using the Abraham solvation parameter model. Correlations were obtained for both dry headspace solid-phase microextraction and conventional wet PDMS coated surfaces. The derived equations correlated the experimental water-to-PDMS and gas-to-PDMS data to better than 0.17 and 0.18 log units, respectively. In the case of the gas-to-PDMS sorption coefficients, the experimental values spanned a range of approximately I I log units. (c) 2007 Elsevier B.V. All rights reserved.
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