Intravenously administered d-mannitol-coated maghemite nanoparticles cause elemental anomalies in selected rat organs

Metallomics ◽  
2020 ◽  
Vol 12 (11) ◽  
pp. 1811-1821
Author(s):  
Katarzyna Matusiak ◽  
Agnieszka Drozdz ◽  
Zuzanna Setkowicz ◽  
Aldona Kubala-Kukus ◽  
Ilona Stabrawa ◽  
...  
Keyword(s):  
Total Reflection ◽  
Maghemite Nanoparticles ◽  
X Ray ◽  
Rat Organs ◽  
Highly Sensitive ◽  
Elemental Homeostasis ◽  
Living Organisms

In this study novel d-mannitol coated maghemite nanoparticles (MIONPs) are presented in terms of their influence on elemental homeostasis of living organisms and for this purpose highly sensitive total reflection X-ray fluorescence was used.

Highly Sensitive Detection of Inorganic Contamination

2009 ◽  
Vol 145-146 ◽  
pp. 101-104 ◽  
Author(s):  
Burkhard Beckhoff ◽  
Andreas Nutsch ◽  
Roswitha Altmann ◽  
G. Borionetti ◽  
C. Pello ◽  
...  
Keyword(s):  
Detection Limits ◽  
Analytical Techniques ◽  
Total Reflection ◽  
Inorganic Contaminants ◽  
Research Activity ◽  
Joint Research ◽  
X Ray ◽  
Low Concentration ◽  
Highly Sensitive ◽  
Highly Sensitive Detection

As the detection of inorganic contaminants is of steadily increasing importance for the improvement of yields in microelectronic applications, the aim of one of the joint research activity within the European Integrated Activity of Excellence and Networking for Nano- and Micro-Electronics Analysis (ANNA, site: www.ANNA-i3.org) is the development and assessment of new methodolo¬gies and metrologies for the detection of low concentration inorganic contaminants in silicon and in novel materials. A main objective consist in the benchmarking of various analytical techniques avail¬able in the laboratories of the participating ANNA partners, including the improvement of the res¬pective detection limits as well as the quantitation reliablity of selected analytical techniques such as total-reflection x-ray fluorescence (TXRF) analysis.

scholarly journals Organ Metallome Processed with Chemometric Methods Enable the Determination of Elements that May Serve as Markers of Exposure to Iron Oxide Nanoparticles in Male Rats

2020 ◽  
Vol 198 (2) ◽  
pp. 602-616
Author(s):  
Marzena Rugiel ◽  
Agnieszka Drozdz ◽  
Katarzyna Matusiak ◽  
Zuzanna Setkowicz ◽  
Krzysztof Klodowski ◽  
...  
Keyword(s):  
Iron Oxide ◽  
Iron Oxide Nanoparticles ◽  
Total Reflection ◽  
Male Rats ◽  
Oxide Nanoparticles ◽  
Chemometric Methods ◽  
X Ray ◽  
Discriminant Analyses ◽  
Elemental Homeostasis

Abstract The systemic influence of iron oxide nanoparticles on the elemental homeostasis of key organs was examined in male rats. In tissues taken at different intervals from nanoparticles injection, the dynamics of elemental changes was analyzed. The organ metallome was studied using total reflection X-ray fluorescence. The obtained data were processed with advanced cluster and discriminant analyses—to classify the tissues according to their organs of origin and to distinguish accurately the nanoparticle-treated and normal rats. Additionally, in the case of liver and heart, it was possible to determine the elements of highest significance for different treatments, which may serve as markers of exposure to iron oxide nanoparticles.

Contribution of x-ray total reflection to the background intensity in EPMA

1990 ◽  
Vol 48 (2) ◽  
pp. 202-203
Author(s):  
Werner P. Rehbach ◽  
Peter Karduck
Keyword(s):  
Atomic Number ◽  
Target Material ◽  
Total Reflection ◽  
Background Intensity ◽  
X Rays ◽  
Characteristic Radiation ◽  
X Ray

In the EPMA of soft x rays anomalies in the background are found for several elements. In the literature extremely high backgrounds in the region of the OKα line are reported for C, Al, Si, Mo, and Zr. We found the same effect also for Boron (Fig. 1). For small glancing angles θ, the background measured using a LdSte crystal is significantly higher for B compared with BN and C, although the latter are of higher atomic number. It would be expected, that , characteristic radiation missing, the background IB (bremsstrahlung) is proportional Zn by variation of the atomic number of the target material. According to Kramers n has the value of unity, whereas Rao-Sahib and Wittry proposed values between 1.12 and 1.38 , depending on Z, E and Eo. In all cases IB should increase with increasing atomic number Z. The measured values are in discrepancy with the expected ones.

Estimation of the noise in TEM image recorded on “imaging plate”

1987 ◽  
Vol 45 ◽  
pp. 748-749
Author(s):  
T. Oikawa ◽  
N. Mori ◽  
T. Katoh ◽  
Y. Harada ◽  
J. Miyahara ◽  
...  
Keyword(s):  
Low Dose ◽  
Quantum Noise ◽  
Laser Light ◽  
Imaging Plate ◽  
Total System ◽  
Electron Dose ◽  
X Ray ◽  
Image Recording ◽  
Recording Material ◽  
Highly Sensitive

The “Imaging Plate”(IP) is a highly sensitive image recording plate for X-ray radiography. It has been ascertained that the IP has superior properties and high practicability as an image recording material in a TEM. The sensitivity, one of the properties, is about 3 orders higher than that of conventional photo film. The IP is expected to be applied to low dose techniques. In this paper, an estimation of the quantum noise on the TEM image which appears in case of low electron dose on the IP is reported.In this experiment, the JEM-2000FX TEM and an IP having the same size as photo film were used.Figure 1 shows the schematic diagram of the total system including the TEM used in this experiment. In the reader, He-Ne laser light is scanned across the IP, then blue light is emitted from the IP.

Determination of some heavy metals (Fe, Cu, Zn and Pb) in blood by total reflection X-ray fluorescence

2003 ◽  
Vol 107 ◽  
pp. 203-206 ◽  
Author(s):  
M. Bounakhla ◽  
A. Doukkali ◽  
K. Lalaoui ◽  
H. Aguenaou ◽  
N. Mokhtar ◽  
...  
Keyword(s):  
Heavy Metals ◽  
Total Reflection ◽  
X Ray
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