Quantitative Imaging and In Situ Concentration Measurements of Quantum Dot Nanomaterials in Variably Saturated Porous Media
Joint Authors
Uyuşur, Burcu
Snee, Preston T.
Li, Chunyan
Darnault, Christophe J. G.
Source
Issue
Vol. 2016, Issue 2016 (31 Dec. 2016), pp.1-10, 10 p.
Publisher
Hindawi Publishing Corporation
Publication Date
2016-01-17
Country of Publication
Egypt
No. of Pages
10
Main Subjects
Abstract EN
Knowledge of the fate and transport of nanoparticles in the subsurface environment is limited, as techniques to monitor and visualize the transport and distribution of nanoparticles in porous media and measure their in situ concentrations are lacking.
To address these issues, we have developed a light transmission and fluorescence method to visualize and measure in situ concentrations of quantum dot (QD) nanoparticles in variably saturated environments.
Calibration cells filled with sand as porous medium and various known water saturation levels and QD concentrations were prepared.
By measuring the intensity of the light transmitted through porous media exposed to fluorescent light and by measuring the hue of the light emitted by the QDs under UV light exposure, we obtained simultaneously in situ measurements of water saturation and QD nanoparticle concentrations with high spatial and temporal resolutions.
Water saturation was directly proportional to the light intensity.
A linear relationship was observed between hue-intensity ratio values and QD concentrations for constant water saturation levels.
The advantages and limitations of the light transmission and fluorescence method as well as its implications for visualizing and measuring in situ concentrations of QDs nanoparticles in the subsurface environment are discussed.
American Psychological Association (APA)
Uyuşur, Burcu& Snee, Preston T.& Li, Chunyan& Darnault, Christophe J. G.. 2016. Quantitative Imaging and In Situ Concentration Measurements of Quantum Dot Nanomaterials in Variably Saturated Porous Media. Journal of Nanomaterials،Vol. 2016, no. 2016, pp.1-10.
https://search.emarefa.net/detail/BIM-1109412
Modern Language Association (MLA)
Uyuşur, Burcu…[et al.]. Quantitative Imaging and In Situ Concentration Measurements of Quantum Dot Nanomaterials in Variably Saturated Porous Media. Journal of Nanomaterials No. 2016 (2016), pp.1-10.
https://search.emarefa.net/detail/BIM-1109412
American Medical Association (AMA)
Uyuşur, Burcu& Snee, Preston T.& Li, Chunyan& Darnault, Christophe J. G.. Quantitative Imaging and In Situ Concentration Measurements of Quantum Dot Nanomaterials in Variably Saturated Porous Media. Journal of Nanomaterials. 2016. Vol. 2016, no. 2016, pp.1-10.
https://search.emarefa.net/detail/BIM-1109412
Data Type
Journal Articles
Language
English
Notes
Includes bibliographical references
Record ID
BIM-1109412