Type of water (location) Cu(II) added (mM) AAS Spectrophotometry
Recovery, % RSD, % Recovery, % RSD, %
Distilled water 0 0.0 0.0 0.0 0.0
5.0 99.8 1.80 99.7 1.6
10.0 95.8.0 1.5 99.0 2.8
15 100.0 2.0 98.5 1.0
Tap water
(Our laboratory)
0 0.0 0.0 0.0 0.0
5.0 99.6 1.6 99.6 2.3
10.0 99.8 2.8 100 1.5
15 99.4 1.0 100.0 2.0
Nile water
(Mansoura City)
0.0 0.0 0.0 0.0 0.0
5 99.9 2.3 99.7 1.6
10 99.4 1.5 99.8 2.1
15 99.6 2.0 100 1.8
Sea water
(Demiate City)
0.0 0.0 0.0 0.0 0.0
5 99.8 2.3 99.7 2.5
10 100.0 1.5 99.8 1.9
15 100.0 2.00 100 1.4
Sea water
(Ras El-Barr)
0.0 0.0 0.0 0.0 0.0
5 99.6 2.5 99.7 2.3
10 100 1.9 99.8 1.5
15 100 1.4 100 2.00
Table 2: Recovery of Cu(II) spiked in natural water samples after flotation using 1.0 x 10-3 M NaPAR and 1.0 x 10-4 M HOL at pH ~ 4 at 25ÂșC (n=3).