Table 4.

Estimated Daily Intake (EDI), Hazard Quotient (HQ) and Hazard Index (HI) of elements in leafy vegetables from markets in Johannesburg, South Africa

	OMUW		OMW		SMW		VMW
	EDI	HQ	EDI	HQ	EDI	HQ	EDI	HQ
As	0.000311	1.038453	0.000076	0.256037	0.000043	0.145969	0.000044	0.147281
Cd	0.006254	6.254215	0.000831	0.831512	0.000303	0.303789	0.000255	0.255818
Co	0.000774	0.025816	0.000356	0.01187	0.000266	0.008871	0.000355	0.011834
Cr	0.009030	3.010069	0.001492	0.497404	0.001682	0.560984	0.000946	0.315558
Cu	0.005652	0.141323	0.004743	0.118586	0.003951	0.098796	0.005011	0.125278
Ni	0.024144	1.207248	0.000973	0.048656	0.001721	0.086099	0.001545	0.077264
Pb	0.000004	0.001142	0.000004	0.001005	0.000003	0.000873	0.000003	0.000792
Zn	0.028996	0.096654	0.020076	0.066922	0.027192	0.090643	0.025433	0.084779
HI	-	11.7749	-	1.8319	-	1.2960	-	1.0186

OM; open-air markets, SM; supermarkets, VM; vegetable markets, UW; unwashed leafy vegetables, W; washed leafy vegetables