Table 13: Determination of cobalt in pharmaceutical tablets.

Sample (mg/tablet)Amount of cobalt (μg mL−1)
ReportedFound*Relative error (%)

Neurobion forte
(cyanocobalamine-15 mg)
7.457.4−0.67
Basiton forte
(cyanocobalamine-15 mg)
7.427.24−2.42

*Average of four determinations.