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. 2020 Aug 26;5(35):22278–22288. doi: 10.1021/acsomega.0c02627

Table 2. List of Materials, Methods, Linearity, LOD, and Real Sample Analyses for the Detection of Fe3+.

sr. no. method materials linear range, (M) LOD, (M) real sample analysis advantages disadvantages references
1 fluorimetric nitrogen-doped carbon dots 1.0 × 10–8 to 1.0 × 10–5 5.0 × 10–9 blood serum, water high sensitivity, nontoxic indistinguishable, Fe3+ from Fe2+ (23)
2 colorimetric   5.0 × 10–8 to 1.2 × 10–5 1.2 × 10–8        
3 fluorimetric nitrogen-doped carbon dots 5.0 × 10–7 to 1.0 × 10–3 7.9 × 10–8 lake water nontoxic relatively poor selectivity (26)
4 colorimetric ion-pair crystal violet cation/PVC   4.0 × 10–8 blood serum, water high sensitivity, sample pretreatment not required use of plastic, toxic (27)
5 amperometric PtNPs/PANI/MWCNT/GCE 1.0 × 10–3 to 2.5 × 10–2 3.0 × 10–9 polluted soil inexpensive, rapid sample pretreatment required (55)
6 fluorimetric graphene quantum dots 3.5 × 10–6 to 6.7 × 10–4 1.6 × 10–6 tap water inexpensive, selectivity relatively poor sensitivity (31)
7 fluorimetric gold nanoclusters 5.0 × 10–6 to 1.3 × 10–3 3.5 × 10–6 tap, lake water, tablets good recovery in spiked real samples relatively poor sensitivity, selectivity, expensive probe (32)
8 fluorimetric gold nanoclusters 5.0 × 10–6 to 2.0 × 10–3 2.0 × 10–6 blood serum selectivity, good accuracy relatively poor sensitivity, expensive (33)
9 fluorimetric Fe3O4@ZnO nanoparticles 1.0 × 10–8 to 1.3 × 10–4 3.0 × 10–9 blood serum, waste water high sensitivity, good recovery fluorescence not stable beyond pH 8.0 (34)
10 fluorimetric Mg–Al layered double hydroxide 7.0 × 10–8 to 1.0 × 10–4 2.6 × 10–8 blood serum selectivity, good recovery multistep fabrication, sample pretreatment required (35)
11 fluorimetric fluorescein-based aromatic framework 5.0 × 10–5 to 2.0 × 10–4 3.8 × 10–5   selectivity short linearity, sensitivity (36)
12 fluorimetric MBTBA-Fe3O4@SiO2 nanocomposite 1.9 × 10–9 to 1.1 × 10–7 1.6 × 10–8 water high sensitivity, good selectivity multiple fluorescence may affect the detection (38)
13 fluorimetric PCQDs 2.0 × 10–8 to 3.0 × 10–6 9.5 × 10–9 various water samples high sensitivity, selectivity, nontoxic, inexpensive store with care due to hygroscopic nature this work