Table 1 Comparison of other methods for the detection of Cr3+
Methods | Limit of detection (nM) | Detection range (nM) | References |
|---|---|---|---|
Flame atomic absorption spectrometry | 12 | 38 − 1.1 × 103 | Chwastowska et al. 2005 |
Fluorescence | 1.7 × 104 | - | Panda et al. 2011 |
Pyridoxal conjugated AuNPs assay | 11.5 × 103 | 7.5 − 1.3 × 10−5 M | Bothra et al. 2017 |
Rhodamine capped AuNPs assay | 9.3 × 103 | - | Manjubaashini et al. 2018 |
This colorimetric assay | 5.0 × 103 | 20 – 25 × 103 | This work |