New Method to Measure Selenium in Cosmetics and Pharmaceuticals
Author Information
Author(s): Mohammad Hosein Soruraddin, Heydari Rouhollah, Puladvand Morteza, Zahedi Mir Mehdi
Primary Institution: Tabriz University
Hypothesis
Can a new spectrophotometric method accurately determine trace amounts of selenium in cosmetic and pharmaceutical products?
Conclusion
The proposed method is simple, rapid, and effective for determining selenium in various samples.
Supporting Evidence
- The method achieved a detection limit of 4.4 ng/mL for selenium.
- The relative standard deviation for six replicate measurements was 2.18%.
- The method was successfully applied to real samples including multivitamins and shampoo.
Takeaway
This study created a new way to find tiny amounts of selenium in shampoos and vitamins using a special chemical process.
Methodology
The method involves reducing selenium to selenium (IV) and using cloud point extraction for concentration before spectrophotometric measurement.
Limitations
The method may be affected by the presence of certain cations that interfere with selenium detection.
Digital Object Identifier (DOI)
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