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Table 2 ICP-MS analysis of basal Ti content in human term placenta and meconium (unpaired samples)

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

  Total Ti (mg/kg)
Placenta (n = 22)   Meconium (n = 18)
1 0.04 1 0.19
2 0.02 2 0.09
3 0.01 3 < LOQ
4 0.05 4 0.17
5 0.20 5 < LOQ
6 0.15 6 < LOQ
7 0.03 7 0.34*
8 0.17 8 1.41*
9 0.11 9 < LOQ
10 0.05 10 < LOQ
11 0.03 11 0.02
12 0.01 12 < LOQ
13 0.16 13 < LOQ
14 0.02 14 0.25*
15 0.47 15 < LOQ
16 0.06 16 0.28*
17 0.09 17 1.50*
18 0.04 18 < LOQ
19 0.08   
20 0.48   
21 0.01   
22 0.03   
n > LOQ 100%   50%
average 0.10   0.47
0.57
SD 0.13  
min 0.01   0.02
max 0.48   1.50
median 0.05   0.25
1st quartile 0.03   0.17
3rd quartile 0.14   0.34
  1. Samples were obtained from unpaired mother-infants. All concentrations are corrected for total blank signals. *Weighted mean for 3 analyses. LOQ = 0.01 mg/kg for meconium and 0.003 mg/kg for placenta. Typical relative measurement uncertainties were 6.5% (k = 1) for meconium, and 8% (k = 1) for placenta