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 2

Calibration data for the determination of Zn.

Background corrector	Calibration range (μg L^−1)	Equation of calibration curves	LOD (μg L^−1)
D2-FAAS^a	2–25	Abs = 0.47790 [Zn] + 0.00553; R^2 = 0.9991	2.8
HSSR-FAAS^a	2–25	Abs = 0.44075 [Zn] + 0.00015; R^2 = 0.9988	1.5
D2-FAAS^b	2–25	Abs = 0.37643 [Zn] + 0.00030; R^2 = 0.9993	6.5
HSSR-FAAS^b	2–25	Abs = 0.37154 [Zn] + 0.00074; R^2 = 0.9992	1.9
D2-FAAS^c	2–25	Abs = 0.42581 [Zn] + 0.00080; R^2 = 0.9992	3.8
HSSR-FAAS^c	2–25	Abs = 0.31517 [Zn] − 0.00044; R^2 = 0.9991	1.6
D2-FAAS^d	2–25	Abs = 0.42600 [Zn] + 0.00038; R^2 = 0.9973	2.6
HSSR-FAAS^d	2–25	Abs = 0.27455 [Zn] − 0.00029; R^2 = 0.9981	0.7
D2-FAAS^e	2–25	Abs = 0.36182 [Zn] + 0.00015; R^2 = 0.9987	3.1
HSSR-FAAS^e	2–25	Abs = 0.32234 [Zn] − 0.00070; R^2 = 0.9993	1.9

^aIn water.
^bIn 0.11 M acetic acid.
^cIn 0.5 M hydroxylamine hydrochloride (F2).
^dIn 1 M ammonium acetate pH = 2 (F3).
^eIn HNO₃ 14%.