Determination of As, Cd, and Pb in Tap Water and Bottled Water Samples by Using Optimized GFAAS System with Pd-Mg and Ni as Matrix Modifiers

Table 4

Accuracy of the method used.

	CRM	Result certified (STD), ng/mL	Result found (STD), ng/mL
As	Trace Element in Water, 1643e	60.45 (0.72)	60.88 (1.99)
Cd	Trace Element in Water, 1643e	6.568 (0.073)	6.50 (0.33)
Pb	Trace Element in Water, 1643e	19.63 (0.21)	21.08 (1.69)