Table 5 Method performance comparison with other studies on SPE of Cd(II) ions
SPE Adsorbent | PF | LOD (µg L–1) | RSD (%) | Ads. capacity (mg g−1) | Ref |
|---|---|---|---|---|---|
Polyvinyl chloride functionalized with 3-(2-thiazolylazo)-2,6-diaminopyridine | 52.6 | 0.7 | 4.1 | 310 | Bagherian et. al. (2020) |
2-[N,N’-bis(2,3-dihydroxybenzaldimin)] aminoethylamine-modified silica gel | 12.3 | 0.65 | – | 41.1 | Sivrikaya et al. (2016) |
PHBvbNCl* | 98 | 0.15 | 2.2 | 152.9 | Altunay et al. (2021) |
CS/MOF-SH** | 25 | 0.008 | 4.1 | 109.9 | Huang et al. (2020) |
Watermelon biochar/CoFe2O4 | 50 | 1.82 | 4.19 | 8.75 | Ozdes and Duran (2021) |
Magnetic graphene oxide | 10 | 2.3 |  < 2.1 | 3.5 | Soylak et al. (2019) |
3‑mercaptopropyl trimethoxysilane‑functionalized graphene oxide–magnetic nanoparticles | 19.3 | 0.9 | 5.04 | – | Lamaiphan et al. (2021) |
1-phenylthiosemicarbazide-modified silica gel | 50 | 0.65 |  < 5 | 6.4 | Mendil et al. (2019) |
Magnetic Mn2O3 nanocomposite modified by N,N′-bis(salicylidene) ethylenediamine | 33 | 320 | 1.1 | – | Jamshidi et al. (2019) |
Descurainia Sophia (DS) seeds | 30 | 1.0 | 3.2 | 11.9 | Khodarahmi et al. (2018) |
PTMAAm-co-DVB-co-AMPS*** | 75 | 1.4 |  < 2.0 | 11.4 | Daşbaşi et al. (2018) |
BCBATT****-modified multiwalled carbon nanotubes | 100 | 0.2 | 3.2 | 8.0 | Gouda and Zordok (2018) |
Brewed tea waste | 100 | 0.56 | 3.03 | 41.5 | This study |