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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