Table 7: Hazard Index (HI) of heavy metals via ingestion, dermal and inhalation routes in children and adults in residential areas around Awotan Landfill, Ibadan, Southwest-Nigeria.

Age group

Matrix

1-150 m

151- 300 m

Ingestion

Dermal

Inhalation

Ingestion

Dermal

Inhalation

Children

Water

3.77

158.63

nd

2.01

86.03

nd

Soil

8677.94

57.24

8.61E-6

6848.93

56.51

5.55E-6

Adults

Water

1.62

212.16

nd

0.86

115.31

nd

Soil

930.65

31.76

5.78E-6

734.27

21.15

4.75E-6