Analyzing soil contamination status in garage and auto mechanical workshops of Shashemane City: implication for hazardous waste management

Environmental Systems Research

Table 4 Comparing the value of heavy metals in study area with other studies in the country and outside the country including standards

Metal	This study	Study in Ethiopia (in mg kg⁻¹⁾				Study in other county (in mg kg⁻¹⁾		USEPA stand (mg kg⁻¹)^f	EU Reg (mg kg⁻¹)^g
Metal	This study	Bulbula^a	Kera^a	Addis Ababa City^b	Tinishu Akaki^c	USA study^d	China study^e	USEPA stand (mg kg⁻¹)^f	EU Reg (mg kg⁻¹)^g
Cd	14.7–307.8	0.71	0.44	0.56–5.9	0.12–1.61	NA	0.02–0.33	85	3
CO	72.2–1685.7	27.95	43.00	25–34	NA	NA	NA	0.3–200	50
Cr	82.8–1003.7	81.00	115	70–561	86.3–15790	6.59 –208	19.3–150	3000	100
Ni	10.8–1086.6	74.13	115	33–46	47.3–200.6	2.44–69.4	7.73–70.9	75	50
Pb	192.2–3041.3	46.74	110	17–852	20.3–325.4	4.62–55.4	9.95–56.0	420	100

NA not available
Source: ^aItanna (2002), ^b Hunachew and Sandip (2011), ^c Melaku et al. (2005), ^d Shacklette and Boerngen (1984), ^e Bradford et al. (1996), ^f USEPA (1993), ^g Ewers (1991)