Table 1 Determination of chromium (III) species using the proposed and standard AAS methods
Sample | Amount of Cr (III) added (ng) | Experimental values for Cr (III) (ng) ( n = 3) | ||
|---|---|---|---|---|
Photometric | Fluorometric | AAS | ||
Tap water | 150.0 | 149.7 ± 0.04 | 149.4 ± 0.06 | 149.6 ± 0.06 |
Rain water | 130.0 | 132.8 ± 0.08 | 132.5 ± 0.07 | 132.3 ± 0.05 |
Drainage water | 100.0 | 108.6 ± 0.04 | 108.9 ± 0.05 | 108.9 ± 0.07 |