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

Table 11

Concentration levels of As, Cd, and Pb in farmers’ fingernail samples according to their blood pressure.

Heavy metal	Concentration levels of studied heavy metals (µgg^−1)
	Normal blood pressure (N = 82)	High blood pressure (N = 45)	-value
As	3.277 ± 1.887	2.872 ± 1.838	0.242
Cd	9.518 ± 4.081	8.807 ± 3.997	0.343
Pb	11.934 ± 3.598	10.987 ± 3.865	0.178

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