Study of Heavy Metal Levels among Farmers of Muda Agricultural Development Authority, Malaysia

Table 2

Comparison of means ± standard deviations of cadmium, lead, and arsenic (μg/g) levels in nail samples from references with similar studies from other countries.

References	Mean concentration (mean ± SD)
	Cadmium (Cd)	Plumbum (Pb)	Arsenic (As)
Present study	0.874±0.746	6.611±5.170	7.801±3.184
[13]	2.50±1.70	9.2±1.5	ND
[14]	1.35±0.85	4.82±2.61	ND
[5]	0.32±0.09	10.99±2.04	7.24±1.28

ND : not detected.