Research Article

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 4

Water-extractable Fe and Zn concentrations (mean value ± standard deviation, 𝑛 = 3 ) in kitchen garden (KG) soil samples.

SamplesFe (mg kg−1)Zn with the D2 method (μg kg−1)Zn with the HSSR method (μg kg−1)Fe/Zn

KG1 7 7 . 4 ± 2 1 . 2 3,1 0 0 ± 4 0 0 2,4 5 0 ± 3 2 0 31.6
KG2 6 . 7 ± 1 . 4 1 1 3 ± 4 0 2 . 7 ± 0 . 2 2,481
KG3 5 . 9 ± 1 . 2 1,1 6 2 ± 3 5 8 4 4 ± 2 1 7.0
KG4 6 8 . 7 ± 8 . 7 3,9 7 4 ± 3 8 4 3,2 3 0 ± 2 9 8 21.9
KG5 5 . 0 ± 0 . 9 7 9 9 ± 9 0 5 5 2 ± 1 0 1 9
KG6 1 1 3 . 1 ± 8 . 3 5,7 9 8 ± 1 6 0 4,8 5 0 ± 1 3 0 23.3
KG7 3 5 . 9 ± 1 0 . 2 1,0 5 4 ± 2 4 5 6 7 5 ± 1 2 3 53.2
KG8 1 2 0 . 0 ± 2 3 . 5 18,2 2 4 ± 2 , 2 1 0 16,7 6 4 ± 2 , 2 1 5 7.1
KG9 1 0 4 . 9 ± 4 . 3 4,7 8 9 ± 1 1 4 4,2 0 6 ± 1 3 3 24.9