An Investigation for Heavy Metals’ Contamination in Farmers’ Fingernails: Case Study in Libya

Table 10

Concentrations of As, Cd, and Pb (µg g⁻¹) in farmers’ fingernail samples according to smoking habit.

Heavy metal	Concentration levels of studied heavy metals (µgg^−1)
	Smokers (N = 72)	Nonsmokers (N = 55)	-value
As	3.146 ± 1.863	2.844 ± 1.855	0.367
Cd	9.356 ± 3.945	8.669 ± 4.121	0.343
Pb	11.822 ± 3.344	10.668 ± 4.238	0.099

(): results are expressed as mean ± SD. N: number of participants.