Trace Metal Contamination Characteristics and Health Risks Assessment of Commelina africana L. and Psammitic Sandflats in the Niger Delta, Nigeria

Table 1

Reference (SRM 8704) concentration values, analytical results, and percentage recovery.

Metals	SRM 8704 reference values	AAS results	Accuracy (% recovery)
	(mg/kg)	(mg/kg) ()
Cadmium	2.94 ± 0.29	3.03 ± 0.04	102.96
Chromium	121.90 ± 3.80	119.47 ± 1.64	98.01
Nickel	42.90 ± 3.70	40.86 ± 0.18	95.23
Lead	150.00 ± 17.00	156.04 ± 6.95	104.23
Zinc	408.00 ± 15.00	398.60 ± 10.54	97.67