Skip to main content

Table 6 Recovery results of heavy metal ions in herbal samples

From: A new sorbent based on MWCNTs modification for separation/preconcentration of trace amounts of Cd(II), Cr(III), Cu(II), Ni(II), and Pb(II) and their determination by flame atomic absorption spectrometry

  Cu(II)a Cr(III)a
Sample Addedb Foundb Recovery (%) Addedb Foundb Recovery (%)
Lettuce 0 0.43 ± 0.08
5.0 5.4 ± 0.11 99.4
10.0 10.37 ± 0.17 99.4
Mushroom 0 13.71 ± 0.59
5.0 18.58 ± 0.14 97.4
10.0 23.78 ± 0.23 100.7
Black tea 0 19.68 ± 1.09 0 5.39 ± 1.12
5.0 24.46 ± 0.41 95.6 5.0 10.24 ± 1.05 97.0
10.0 29.75 ± 0.39 103.9 10.0 15.14 ± 0.82 97.5
  1. aMean ± standard deviation (n = 5)
  2. bUnites by mg kg−1