Pesticide Residues and Associated Public Health Risks in Vegetables from Irrigated Farms Adjacent to Rift Valley Lake Ziway, Ethiopia

Table 7

Target hazard quotient (THQ) and hazard index (HI) of pesticide residues from consumption of tomato produced in the study sites at different levels (days per week) of exposure.

Sites	Levels of exposure (d/w)	Target hazard quotient (THQ)								Hazard index (HI)
		α-Endosulfan		Heptachlor		Malathion		Propargite
		A	C	A	C	A	C	A	C	A	C
S1	1	0.016	0.044	0.017	0.046	0.0003	0.001	—	—	0.034	0.090
	2	0.033	0.088	0.034	0.091	0.001	0.002	—	—	0.068	0.181
	3	0.049	0.131	0.051	0.137	0.001	0.002	—	—	0.102	0.271
	5	0.082	0.219	0.086	0.229	0.001	0.004	—	—	0.169	0.451
	7	0.115	0.307	0.120	0.320	0.002	0.005	—	—	0.237	0.632
S2	1	0.008	0.020	—	—	—	—	0.002	0.004	0.009	0.024
	2	0.015	0.040	—	—	—	—	0.003	0.008	0.018	0.048
	3	0.023	0.060	—	—	—	—	0.005	0.012	0.027	0.072
	5	0.038	0.101	—	—	—	—	0.008	0.020	0.045	0.121
	7	0.053	0.141	—	—	—	—	0.011	0.028	0.063	0.169
S3	1	0.010	0.026	0.011	0.030	0.001	0.002	0.000	0.001	0.023	0.060
	2	0.020	0.053	0.023	0.061	0.002	0.005	0.001	0.002	0.045	0.120
	3	0.030	0.079	0.034	0.091	0.003	0.007	0.001	0.003	0.068	0.180
	5	0.049	0.132	0.057	0.152	0.004	0.012	0.002	0.005	0.113	0.301
	7	0.069	0.185	0.080	0.213	0.006	0.017	0.002	0.006	0.158	0.421

Note. A = adult; C = children.