A New Spectrophotometric Method for Determination of Selenium in Cosmetic and Pharmaceutical Preparations after Preconcentration with Cloud Point Extraction

Table 6

The results of selenium determination in Centrum tablet by the proposed and reference methods (𝑛=6).

Method	Label content of Se (mg)	Measured value (mg)
Proposed method	0.250	0.240
ICP-OES	0.250	0.245