Determination of the Selected Heavy Metal Content and Its Associated Health Risks in Selected Vegetables Marketed in Bahir Dar Town, Northwest Ethiopia

Table 8

THQ values of individual heavy metals through the consumption of different vegetables in the study area.

Type of samples	THQ values of each heavy metal
	Pb	Cd	Cr		Cu	HI = ∑THQ	Upper limit^a
Potatoes	2.38E − 01	2.20E − 01	4.18E − 01		9.17E − 02	9.68E − 01	HI < 1
Tomatoes	1.29E − 01	2.92E − 01	4.43E − 01		1.04E − 01	9.68E − 01
Onions	1.41E − 01	2.40E − 01	4.18E − 01		7.33E − 03	8.06E − 01
Cabbages	1.39E − 01	BDL	4.15E − 01		1.15E − 01	6.69E − 01
Carrots	2.38E − 01	2.90E + 00^b	4.26E − 01		9.18E − 02	3.66E + 00^b
Beetroots	1.41E − 01	2.27E − 01	4.12E − 01		8.45E − 03	7.88E − 01
Lettuce	1.39E − 01	BDL	4.27E − 01		6.23E − 03	5.72E − 01
∑THQ	1.17E + 00	9.79E − 01	2.96E + 00		4.25E − 01	4.77E + 00
RfDo (mg·kg^−1)^a	3.50E − 03	1.00E − 03	3.00E − 03		4.00E − 02

Source: a = US EPA, 2015; b = THQ values >1; BDL = below detection limit.