Table 4.

The PTDI, EDI, and EWI values recorded for the different heavy metals detected in the fish species

Metals	PTDIa	EDI (mg/kg bw/day)	EWI (mg/kg bw/week)	%PTWI
Mn	0.14b	1.63 × 10−6	7.07 × 10−5	0.007
Cu	500	6.46 × 10−6	28.10 × 10−5	0.008
Zn	1000	1.32 × 10−6	5.72 × 10−5	0.001
Cd	1	91.99 × 10−6	4.00 × 10−5	0.572
Pb	3.57	5.31 × 10−6	23.08 × 10−5	0.923

^aPTDI values in µg kg body wt⁻¹ day⁻¹ of Cu, Zn, Cd, and Pb

^bThe PTDI value of Mn was based on the RfD of Mn proposed by USEPA