Effects of Iron Concentration Level in Extracting Solutions from Contaminated Soils on the Determination of Zinc by Flame Atomic Absorption Spectrometry with Two Background Correctors

Table 7

Determination of traces of Zn in 2% Fe solution by direct aspiration-FAAS using the D₂ and the HSSR methods.

Zn concentration added (mg L^−1)	Zn concentration found (mg L^−1)
	D2 method	HSSR method
0.5	0.74±0.07	0.54±0.03
0.75	1.02±0.05	0.75±0.04
1	1.20±0.05	0.97±0.02
1.5	1.86±0.01	1.49±0.01

Means and standard deviations for triplicate analyses.