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Table 4 Results for metal ions determination in various water samples obtained using the optimum conditions.

From: Salicylic acid functionalized silica-coated magnetite nanoparticles for solid phase extraction and preconcentration of some heavy metal ions from various real samples

Sample Added (μg L-1) Found (μg L-1) a
   Cu(II) Ni(II) Cd(II) Cr(III)
Tap water 0.00
10.00
1.95 ± 0.45 12.12 ± 0.12 5.82 ± 0.31 15.98 ± 0.35 NDb 10.03 ± 0.07 ND 10.12 ± 0.09
Canal water 0.00
10.00
4.93 ± 0.15 14.87 ± 0.11 6.48 ± 0.36 16.32 ± 0.38 0.83 ± 0.09 10.68 ± 0.12 5.85 ± 0.38 16.17 ± 0.29
Sewage water 0.00
10.00
6.93 ± 0.16 17.19 ± 0.12 69.88 ± 0.41 80.09 ± 0.37 4.65 ± 0.13 14.91 ± 0.21 52.75 ± 0.26 63.12 ± 0.32
River water 0.00
10.00
3.64 ± 0.13 13.48 ± 0.22 8.92 ± 0.61 19.13 ± 0.52 1.67 ± 0.05 11.95 ± 0.24 1.32 ± 0.25 11.44 ± 0.42
  1. (N = 5)
  2. a Mean of five determinations ± standard deviation
  3. b Not detected