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Fluorescence based passive samplers ...

Flynn, Kathleen.

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Fluorescence based passive samplers for diluted bitumen in water.

Record Type:	Electronic resources : Monograph/item
Title/Author:	Fluorescence based passive samplers for diluted bitumen in water./
Author:	Flynn, Kathleen.
Published:	Ann Arbor : ProQuest Dissertations & Theses, : 2017,
Description:	38 p.
Notes:	Source: Dissertation Abstracts International, Volume: 75-01C.
Contained By:	Dissertation Abstracts International75-01C.
Subject:	Environmental science. -
Online resource:	http://pqdd.sinica.edu.tw/twdaoapp/servlet/advanced?query=10593589

Fluorescence based passive samplers for diluted bitumen in water.
Flynn, Kathleen.

Fluorescence based passive samplers for diluted bitumen in water. - Ann Arbor : ProQuest Dissertations & Theses, 2017 - 38 p.

Source: Dissertation Abstracts International, Volume: 75-01C.

Thesis (Ph.D.)--Queen's University (Canada), 2017.

Passive samplers are low-cost and simple devices that can be used to monitor analytes in dynamic systems. In this project, Polydimethylsiloxane and UltraEverDry films were tested for application as passive samplers for dilbit. Three types of oil were used, dissolved, mechanically dispersed, and mechanically dispersed with chemical enhancement. PDMS absorbed oil, with dispersed oil allowing for faster uptake into PDMS than dissolved oil. Equilibration times ranged from 4-8 days for dispersed oil, depending on the thickness of the film. The lower detection limit of the thick PDMS films is ~0.4 ppm but can be improved by improving film reproducibility. Thin films had a partition coefficient of ~1000 while thick films had a partition coefficient of ~6000. Oil can be extracted from PDMS films with ethanol giving a volume dependent signal. Films and ethanol extracts can be used to monitor the concentration of dilbit present in model systems for riverbeds and real-life oil release scenarios. Oil was not observed adsorbed to UltraEverDry.Subjects--Topical Terms:

677245
Environmental science.

Fluorescence based passive samplers for diluted bitumen in water.
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500 $a Source: Dissertation Abstracts International, Volume: 75-01C.
502 $a Thesis (Ph.D.)--Queen's University (Canada), 2017.
520 $a Passive samplers are low-cost and simple devices that can be used to monitor analytes in dynamic systems. In this project, Polydimethylsiloxane and UltraEverDry films were tested for application as passive samplers for dilbit. Three types of oil were used, dissolved, mechanically dispersed, and mechanically dispersed with chemical enhancement. PDMS absorbed oil, with dispersed oil allowing for faster uptake into PDMS than dissolved oil. Equilibration times ranged from 4-8 days for dispersed oil, depending on the thickness of the film. The lower detection limit of the thick PDMS films is ~0.4 ppm but can be improved by improving film reproducibility. Thin films had a partition coefficient of ~1000 while thick films had a partition coefficient of ~6000. Oil can be extracted from PDMS films with ethanol giving a volume dependent signal. Films and ethanol extracts can be used to monitor the concentration of dilbit present in model systems for riverbeds and real-life oil release scenarios. Oil was not observed adsorbed to UltraEverDry.
590 $a School code: 0283.
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