New polymer passive sampler for sensitive biomonitoring of lipid-rich matrices

Dürig, Wiebke, Blakey, Idriss, Grant, Sharon, Chambers, Lewis, Escher, Beate I., Weijs, Liesbeth and Gaus, Caroline (2015) New polymer passive sampler for sensitive biomonitoring of lipid-rich matrices. Environmental Science and Technology Letters, 3 2: A-E. doi:10.1021/acs.estlett.5b00333


Author Dürig, Wiebke
Blakey, Idriss
Grant, Sharon
Chambers, Lewis
Escher, Beate I.
Weijs, Liesbeth
Gaus, Caroline
Title New polymer passive sampler for sensitive biomonitoring of lipid-rich matrices
Journal name Environmental Science and Technology Letters   Check publisher's open access policy
ISSN 2328-8930
Publication date 2015-12-29
Sub-type Article (original research)
DOI 10.1021/acs.estlett.5b00333
Open Access Status Not Open Access
Volume 3
Issue 2
Start page A
End page E
Total pages 5
Place of publication Washington, DC, United States
Publisher American Chemical Society
Collection year 2016
Language eng
Formatted abstract
The feasibility of passive sampling biological matrices to quantify contaminants has been demonstrated using polydimethylsiloxane (PDMS). PDMS has, however, low sorptive capacity for hydrophobic compounds (with Klipid–PDMS ∼ 30–40), and increasing the sampler volume and thus the extent of chemical mass transfer is not feasible because of concomitant lipid transfer. We therefore developed new polymers by graft polymerization from PDMS substrates and evaluated the mechanism and kinetics of lipid transfer. Klipid–polymer was significantly improved to 6.7 ± 0.53 for dioxins and 0.78 ± 0.15 for PCBs using poly(tert-butyl methacrylate) (PtBuMA) chain grafts. Consistent with this, the PtBuMA solubility of selected dioxins was 6–10 times higher than that of PDMS. Lipid transfer followed a swelling process, which was rapid (t95% = 20–72 h), independent of tissue lipid content and proportional to polymer sampler volume. The new PtBuMA polymer offers new opportunities for sensitive, rapid biomonitoring of PBTs and possibly also less stable neutral hydrophobic compounds in biota and food.
Q-Index Code C1
Q-Index Status Provisional Code
Institutional Status UQ
Additional Notes Article As Soon As Publishable (ASAP)

 
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Created: Tue, 02 Feb 2016, 11:23:52 EST by Chris Ende on behalf of Aust Institute for Bioengineering & Nanotechnology