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A method of measuring gold nanoparticle concentrations by x-ray fluorescence for biomedical applications
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10.1118/1.4798966
/content/aapm/journal/medphys/40/5/10.1118/1.4798966
http://aip.metastore.ingenta.com/content/aapm/journal/medphys/40/5/10.1118/1.4798966

Figures

Image of FIG. 1.
FIG. 1.

Secondary x-ray fluorescence excitation configuration, which consists of an x-ray source, lead collimator, GNP sample/solutions, and spectrometer.

Image of FIG. 2.
FIG. 2.

The configuration for measuring x-ray source emission spectra with different filtration: no filter, 0.2 mm Pb filter, and 1 mm Pb filter.

Image of FIG. 3.
FIG. 3.

(a) The comparison of photon counts among the three filtration modes for the x-ray source emission. (b) The comparison spectra normalized by the percentage of photons detected.

Image of FIG. 4.
FIG. 4.

(a) The direct comparison of photon counts among the three excitation filtration modes for the 1.9 nm GNPs spectra. (b) The comparison spectra normalized by the percentage of photons detected.

Image of FIG. 5.
FIG. 5.

The comparison of photon numbers for the 1.9 nm GNP spectra among the three emission filtration modes.

Image of FIG. 6.
FIG. 6.

The system configuration for measuring fluorescent spectra of GNP solutions with different weight concentrations and background spectra.

Image of FIG. 7.
FIG. 7.

The system configuration for measuring fluorescent spectra of GNP solutions with different weight concentrations and background spectra inside a piece of chicken breast.

Image of FIG. 8.
FIG. 8.

Spectra of 1.9 nm GNP solutions with different concentrations of (a) 10%, (b) 0.5%, (c) 0.2%, and (d) 0.1%.

Image of FIG. 9.
FIG. 9.

Background subtracted spectra of 1.9 nm GNP solutions with weight concentration of (a) 10%, (b) 0.5%, (c) 0.2%, and (d) 0.1%.

Image of FIG. 10.
FIG. 10.

Spectra of 15 nm GNP solutions with different concentration of (a) 10%, (b) 0.5%, (c) 0.2%, and (d) 0.1%.

Image of FIG. 11.
FIG. 11.

Background subtracted spectra of 15 nm GNP solutions with (a) 10%, (b) 0.5%, (c) 0.2%, and (d) 0.1% weight concentration.

Image of FIG. 12.
FIG. 12.

Spectra of 15 nm GNP solutions inside chicken breast with different concentration of (a) 1%, (b) 0.5%, (c) 0.2%, and (d) 0.1%.

Image of FIG. 13.
FIG. 13.

Background subtracted spectra of 15 nm GNP solutions inside chicken breast with (a) 1%, (b) 0.5%, (c) 0.2%, and (d) 0.1% weight concentration.

Image of FIG. 14.
FIG. 14.

Photon-concentration curves of (a) 1.9 nm GNP solutions from 10% to 0.1% weight concentrations, (b) 15 nm GNP solutions from 10% to 0.1% weight concentrations, and (c) 15 nm GNP solutions inside chicken breast from 1% to 0.1% weight concentrations.

Image of FIG. 15.
FIG. 15.

Background scattering spectra acquired by using solutions with absence of GNPs in (a) 1.9 and 15 nm experiments and (b) experiment of 15 nm GNP solution inside chicken breast.

Tables

Generic image for table
TABLE I.

The measurement uncertainties of fluorescence peak areas in 1.9 nm GNP solution with corresponding concentrations.

Generic image for table
TABLE II.

The measurement uncertainties of fluorescence peak areas in 15 nm GNP solution with corresponding concentrations.

Generic image for table
TABLE III.

The measurement uncertainties of fluorescence peak areas in corresponding chicken breast experiments.

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/content/aapm/journal/medphys/40/5/10.1118/1.4798966
2013-04-04
2014-04-19
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752b84549af89a08dbdd7fdb8b9568b5 journal.articlezxybnytfddd
Scitation: A method of measuring gold nanoparticle concentrations by x-ray fluorescence for biomedical applications
http://aip.metastore.ingenta.com/content/aapm/journal/medphys/40/5/10.1118/1.4798966
10.1118/1.4798966
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