Detection of titanium dioxide particles on frozen tissue sections using synchrotron radiation X-ray fluorescence analysis.
Recent studies into the in vivo absorption and biological influence of particulate matter, especially nanomaterials (NMs), have raised worldwide concerns over their safety. However, it is often technically difficult to conduct these studies because NMs are too small to be observed by optical microscopy. Here, we attempted to establish a new method to visually detect NMs on tissue samples. Specifically, we have analyzed titanium dioxide particles with a diameter of 5 microm, which are widely used in cosmetics, using frozen tissue sections by synchrotron radiation X-ray fluorescence analysis.
Department of Toxicology and Safety Science, Graduate School of Pharmaceutical Sciences, Osaka University, Osaka.
Y
Y
Morishita
K
K
Yamashita
T
T
Yoshikawa
Y
Y
Terada
H
H
Nabeshi
Y
Y
Yoshioka
N
N
Itoh
Y
Y
Tsutsumi
D000818:Animals; D003358:Cosmetics / Q000032:analysis; D005260:Female; D005615:Freezing; D008168:Lung / Q000737:chemistry; D051379:Mice; D008807:Mice, Inbred BALB C; D010316:Particle Size; D013052:Spectrometry, X-Ray Emission; D017356:Synchrotrons; D014025:Titanium / Q000032:analysis*
D003358:Cosmetics; C009495:titanium dioxide; D014025:Titanium