Table 12: Determination of cobalt in environmental water samples.

Samplecobalt (μg mL−1)
AddedFoundRecovery (%)RSD (%)

Tap water (municipality water supply, Anantapur)0.00.322.5
1.51.8098.901.8
3.03.35100.903.0
4.54.83100.202.2

River water (Penna, Tadipatri.)0.01.523.0
1.53.0099.341.6
3.04.55100.662.8
4.55.9598.844.0

Drain water (vanaspati industry, Tadipatri.0.03.601.7
1.55.31104.123.2
3.06.4898.182.5
4.58.0799.633.6