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Table 4 Determination of Cd, Cu, and Pb in tap water and Kızılırmak river water samples (volume of samples 250 mL)

From: Mucor pusillus immobilized Amberlite XAD-4 biocomposites for preconcentration of heavy metal ions by solid-phase extraction method

Samples

Element

Added (μg/L)a

Found (μg/L)b

Relative error, %

Tap water

Cd

N.D

10

9.5 ± 0.2

− 5

Cu

12.3 ± 0.4

10

20.6 ± 0.5

− 8

Pb

N.D

10

9.4 ± 0.3

− 6

River water

Cd

N.D

10

9.3 ± 0.3

− 7

Cu

20.4 ± 0.6

10

28.7 ± 0.7

− 6

Pb

N.D

10

9.2 ± 0.2

− 8

  1. N.D not detected
  2. aMean of five determinations at 95% confidence level (\( \overline{x} \)±\( ts/\sqrt{N} \))
  3. bShows the concentration of metal ions in tomato leaves and Kızılırmak river water samples