Study into the equilibrium mechanism between water and poly(dimethylsiloxane) for very apolar solutes : adsorption or sorption?
- Author
- E Baltussen, Patrick Sandra (UGent) , Frank David (UGent) , HG Janssen and C Cramers
- Organization
- Abstract
- Recently several publications appeared correlating octanol-water partitioning coefficients (K-O/W) with solid-phase microextraction (SPME) extraction coefficients on poly(dimethylsiloxane) (PDMS) fibers. This correlation seems very good for medium-polar to polar compounds but cannot explain the observations for apolar compounds. It is shown that for polychlorinated biphenyls (PCBs) the published data are erroneous, because of system adsorption effects. PCB concentrations up to 10 times higher were measured on the stir bar compared to the SPME fiber. Using a short packed PDMS trap, it is shown that the true PDMS-water equilibrium constant is indeed proportional to literature K-O/W data.
- Keywords
- SOLID-PHASE MICROEXTRACTION, EXTRACTION, PESTICIDES
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Please use this url to cite or link to this publication: http://hdl.handle.net/1854/LU-175190
- MLA
- Baltussen, E., et al. “Study into the Equilibrium Mechanism between Water and Poly(Dimethylsiloxane) for Very Apolar Solutes : Adsorption or Sorption?” ANALYTICAL CHEMISTRY, vol. 71, no. 22, 1999, pp. 5213–16, doi:10.1021/ac990313g.
- APA
- Baltussen, E., Sandra, P., David, F., Janssen, H., & Cramers, C. (1999). Study into the equilibrium mechanism between water and poly(dimethylsiloxane) for very apolar solutes : adsorption or sorption? ANALYTICAL CHEMISTRY, 71(22), 5213–5216. https://doi.org/10.1021/ac990313g
- Chicago author-date
- Baltussen, E, Patrick Sandra, Frank David, HG Janssen, and C Cramers. 1999. “Study into the Equilibrium Mechanism between Water and Poly(Dimethylsiloxane) for Very Apolar Solutes : Adsorption or Sorption?” ANALYTICAL CHEMISTRY 71 (22): 5213–16. https://doi.org/10.1021/ac990313g.
- Chicago author-date (all authors)
- Baltussen, E, Patrick Sandra, Frank David, HG Janssen, and C Cramers. 1999. “Study into the Equilibrium Mechanism between Water and Poly(Dimethylsiloxane) for Very Apolar Solutes : Adsorption or Sorption?” ANALYTICAL CHEMISTRY 71 (22): 5213–5216. doi:10.1021/ac990313g.
- Vancouver
- 1.Baltussen E, Sandra P, David F, Janssen H, Cramers C. Study into the equilibrium mechanism between water and poly(dimethylsiloxane) for very apolar solutes : adsorption or sorption? ANALYTICAL CHEMISTRY. 1999;71(22):5213–6.
- IEEE
- [1]E. Baltussen, P. Sandra, F. David, H. Janssen, and C. Cramers, “Study into the equilibrium mechanism between water and poly(dimethylsiloxane) for very apolar solutes : adsorption or sorption?,” ANALYTICAL CHEMISTRY, vol. 71, no. 22, pp. 5213–5216, 1999.
@article{175190,
abstract = {{Recently several publications appeared correlating octanol-water partitioning coefficients (K-O/W) with solid-phase microextraction (SPME) extraction coefficients on poly(dimethylsiloxane) (PDMS) fibers. This correlation seems very good for medium-polar to polar compounds but cannot explain the observations for apolar compounds. It is shown that for polychlorinated biphenyls (PCBs) the published data are erroneous, because of system adsorption effects. PCB concentrations up to 10 times higher were measured on the stir bar compared to the SPME fiber. Using a short packed PDMS trap, it is shown that the true PDMS-water equilibrium constant is indeed proportional to literature K-O/W data.}},
author = {{Baltussen, E and Sandra, Patrick and David, Frank and Janssen, HG and Cramers, C}},
issn = {{0003-2700}},
journal = {{ANALYTICAL CHEMISTRY}},
keywords = {{SOLID-PHASE MICROEXTRACTION,EXTRACTION,PESTICIDES}},
language = {{eng}},
number = {{22}},
pages = {{5213--5216}},
title = {{Study into the equilibrium mechanism between water and poly(dimethylsiloxane) for very apolar solutes : adsorption or sorption?}},
url = {{http://doi.org/10.1021/ac990313g}},
volume = {{71}},
year = {{1999}},
}
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