Polyelectrolyte Multilayers on Magnetic Silica as a New Sorbent for the Separation of Trace Silver in the Leaching Solutions of Antibacterial Products and Determination by Flame Atomic Absorption Spectrometry

Document Type : Research Article

Authors

1 School of Chemistry and Chemical Engineering, Henan University of Technology. Zhengzhou, 450001, P.R. CHINA

2 School of Food Science and Technology, Henan University of Technology. Zhengzhou, 450001, P.R. CHINA

Abstract

A novel, magnetic silica sorbent with polyelectrolyte multilayers (PEMs) on its surface was prepared, and was used for Magnetic Solid Phase Extraction (MSPE) of trace A+ via Flame Atomic Absorption Spectrometry (FAAS). The experimental parameters for the MSPE procedure, such as the pH, type, and concentration of eluent, ultrasonic time and effects of co-existing ions were investigated. The detection limit of the developed method was 0.17 ng/mL for Ag+ with an enrichment factor of 35. This method was also successfully applied to the determination of trace Ag+ in the leaching solution of different antibacterial products with satisfactory results.

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References

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