Applied and Environmental Soil Science / 2016 / Article / Tab 7

Research Article

Trace Metal Contamination Characteristics and Health Risks Assessment of Commelina africana L. and Psammitic Sandflats in the Niger Delta, Nigeria

Table 7

Noncarcinogenic effects due to oral ingestion exposure to sandflat soil trace metals.

CdCrNiPbZn

Estimated daily dose (EDDing)
Children (1–6 years)Min.0.00350.03070.00880.00010.3756
Max.0.00450.0410.01310.00020.3929
Mean0.00380.03730.01150.00030.3761

Children (6–18 years)Min.0.00140.01220.00350.000040.1487
Max.0.00180.01620.00520.000060.1555
Mean0.00150.01480.00460.000050.1489

AdultsMin.0.00040.00430.00120.000010.0524
Max.0.00060.00570.00180.000020.0548
Mean0.00050.00520.00160.000020.0525

Target hazard quotient (THQ)
Children (1–6 years)Min.0.00350.01030.00040.000020.0012
Max.0.00450.01370.00070.000040.0013
Mean0.00380.01240.00060.000030.0012

Children (6–18 years)Min.0.00140.00410.00020.000010.0004
Max.0.00180.00540.00030.000020.0005
Mean0.00150.00490.00020.000010.0004

AdultsMin.0.00050.00140.000060.0000030.0002
Max.0.00060.00190.000096.00E − 060.0002
Mean0.00050.00170.000084.00E − 060.0002

Hazard index (HI)Min.Max.Mean

1–6 years0.0150.020.018
6–18 years0.0060.0080.007
Adults0.0020.0030.003

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