Quantitative Imaging and In Situ Concentration Measurements of Quantum Dot Nanomaterials in Variably Saturated Porous Media

المؤلفون المشاركون

Uyuşur, Burcu
Snee, Preston T.
Li, Chunyan
Darnault, Christophe J. G.

المصدر

Journal of Nanomaterials

العدد

المجلد 2016، العدد 2016 (31 ديسمبر/كانون الأول 2016)، ص ص. 1-10، 10ص.

الناشر

Hindawi Publishing Corporation

تاريخ النشر

2016-01-17

دولة النشر

مصر

عدد الصفحات

10

التخصصات الرئيسية

الكيمياء
هندسة مدنية

الملخص 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.

نمط استشهاد جمعية علماء النفس الأمريكية (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

نمط استشهاد الجمعية الأمريكية للغات الحديثة (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

نمط استشهاد الجمعية الطبية الأمريكية (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

نوع البيانات

مقالات

لغة النص

الإنجليزية

الملاحظات

Includes bibliographical references

رقم السجل

BIM-1109412