Determination of trace amount of silver in water samples by flame atomic absorption after preconcentration by ZnO nano sorbent

ABSTRACT

A simple and fast method based on solid phase extraction (SPE) applying zinc oxide (ZnO) nanoparticles and atomic absorption spectrometry (AAS) was developed for the trace amount determination of silver (Ag) in aqueous samples. The method linearity was in the range of 14 to 700 ng mL⁻¹. The extraction efficiency of Ag was greater than 98% and limit of detection (LOD) was 4.2 ng mL⁻¹. The preconcentration factor was 200 and the relative standard deviation (RSD%) of the method was 3.7% (n = 6).

KEYWORDS:

• Zinc oxide nanosorbent
• Ag(I)
• flame atomic absorption spectrometry
• solid phase extraction

Additional information

Funding

The present research was supported by Payame Noor University (Ghazvin branch) and Azarbaijan Shahid Madani University which are gratefully acknowledged.