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Fig. 2 | Particle and Fibre Toxicology

Fig. 2

From: Basal Ti level in the human placenta and meconium and evidence of a materno-foetal transfer of food-grade TiO2 nanoparticles in an ex vivo placental perfusion model

Fig. 2

STEM-EDX analysis of TiO2 particles basal distribution in human placenta (a) and meconium (b). (A1) (S) TEM -micrographs showing cluster of four particles. Left hand corner micrograph is acquired in STEM-HAADF mode where particles appear brighter than biological matrix, due to the detection of elastic electron scattered by high Z number particles (chemical contrast). (A2) STEM-EDX elemental maps and sum spectrum identifying Ti, O, Al, and Si as main elements, and (A3) corresponding EDX analysis. All scale bars = 100 nm. (B1) TEM image illustrating particle content in meconium and coupled to EDX analysis (B2) with Ti, O, Al and Si identified as main elements over 3 particles

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