Table 5.

Concentrations of heavy metals in Blood samples of workers in different occupational settings in the World (Unit: μgL⁻¹).

Location	Industry Category	Pb	Cd	Ni	Zn	Methods
Dhaka, Bangladesha	Plastic industry	32.78	1.08	1.42	9.08	AAS
Lahor, Pakistanb	Steel Mills	263.0	5.16		8.54	AAS
Kirkuk, Iraqc	Gas company	25.4	1.09			AAS
Sialkot, Pakistand	Leather tanning, products & manufacturing	119.0	9.0	4.18	22.3	FAAS
Granada, Spaine	Iron and steel	43.39	0.49	0.96		ETAAS
Sialkot, Pakistanf	Surgical industry	25.18	5.61	4.66	13.5	FAAS

a = this study; b = Afridi et al. [48]; c= Husien et al. [49]; d=Junaid et al. [16]; e=Kurt-Karakus [51]; f=Junaid et al. [50].