Journal Highlight: Ultra-trace silver determination in biological and water samples by EAAS after electrodeposition on a graphite probe

Skip to Navigation

Ezine

  • Published: Jun 3, 2013
  • Author: spectroscopyNOW
  • Channels: Atomic
thumbnail image: Journal Highlight: Ultra-trace silver determination in biological and water samples by EAAS after electrodeposition on a graphite probe
A rapid and simple procedure was developed for the selective and sensitive determination of ultra-trace silver in biological and environmental samples using the electrodeposition on a graphite probe modified with palladium followed by electrothermal atomic absorption spectrometry.


Ultra-trace silver determination in biological and water samples by electrothermal atomic absorption spectrometry after electrodeposition on a graphite probe

Journal of the Chinese Chemical Society, 2013, 60, 481-487
Reza Moradkhani, Ahmad Rouhollahi, Hamid Shirkhanloo, Jahan B. Ghasemi

Abstract: A rapid and simple procedure was developed for selective and sensitive determination of ultra-trace silver in biological and environmental samples using the electrodeposition on a graphite probe modified with palladium followed by electrothermal atomic absorption spectrometry. Several experimental parameters for the electrodeposition, such as deposition potential, electrolyte concentration, pH of solution and deposition time were optimized. The calibration graph after preconcentration was linear in the range of 10-250 ngL−1 with correlation coefficient of 0.9989 under the optimum conditions for procedure. The limits of detection (LOD) and quantification (LOQ) base on (3σ) and (10σ) were 2.8 ngL−1 and 9.4 ngL−1 respectively. Related standard deviation (RSD) for eight replicate measurements of 100 ngL−1 silver was 4.3%. Samples were digested completely in a closed microwave digestion system using only perchloric acid, and interference owing to various cations was also investigated. The proposed procedure was successfully applied to determine silver in blood, urine and some environmental samples with satisfactory analytical results.

  • This paper is free to view for all users registered on spectroscopyNOW.com until the end of July 2013.
    After this time, you can purchase it using Pay-Per-View on Wiley Online Library.

Social Links

Share This Links

Bookmark and Share

Microsites

Suppliers Selection
Societies Selection

Banner Ad

Click here to see
all job opportunities

Most Viewed

Copyright Information

Interested in separation science? Visit our sister site separationsNOW.com

Copyright © 2017 John Wiley & Sons, Inc. All Rights Reserved