Health Risk Assessment and Levels of Heavy Metals in Farmed Nile Tilapia (Oreochromis niloticus) from the Volta Basin of Ghana

Table 8

Cancer risk estimations of heavy metals in cage tilapia for children and adults.

	Fish farm A		Fish farm B		Fish farm C		Control
Metal	Children	Adults	Children	Adults	Children	Adults	Children	Adults
Cr	1.77E − 07	9.45E − 08	—	—	1.88E − 07	1.01E − 07	5.70E − 08	2.98E − 08
Ni	5.55E − 08	2.97E − 06	9.36E − 06	5.01E − 06	6.84E − 06	3.66E − 06	6.76E − 07	3.52E − 07
As	—	—	—	—	—	—	3.95E − 07	2.06E − 07
HI	2.33E − 07	3.06E − 06	9.36E − 06	5.01E − 06	7.03E − 06	3.76E − 06	6.77E − 07	3.54E − 06