Research Article
Amino-Functionalization of Multiwall Carbon Nanotubes and Its Use for Solid Phase Extraction of Mercury Ions from Fish Sample
Table 3
Comparison of the analytical results on different CNTs adsorption methods.
| Metal | Kind of sorbent | Adsorption capacity (mg/g) | Reference |
| Hg2+ | Amino-functionalized MWCNTs | 11.58 | This method | Pb2+ | MWCNTs | 5.50–16.40 | [6] | Pb2+ | Oxidized MWCNTs | 22.5, 59 and 11.2 | [14–16] | Cd2+ | Oxidized MWCNTs | 1.1–11 | [16, 18] | Ni2+ | Oxidized MWCNTs | 9–47.85 | [10] | Zn2+ | Oxidized MWCNTs | 10.21–32.68 | [18, 19] | Cu2+ | Oxidized MWCNTs | 7.5–11.3 | [11, 19] | Sr2+& Eu2+ | Oxidized MWCNTs | — | [13] | Co2+ | L-Tyrosine on oxidized MWCNTs | 1.18–2.21 | [28] |
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