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Comparison of the performance of pyridine-functionalized nanoporous silica particles for the extraction of gold(III) from natural samples |
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| Authors: | Elahe Moazzen Nasser Daei Seyyedeh Mahdieh Hosseini Homeira Ebrahimzadeh Azam Monfared Mostafa M. Amini Omid Sadeghi |
| Affiliation: | 1. Department of Chemistry, Shahid Beheshti University G.C., Tehran, 19839-63113, Iran 2. Department of Chemistry, Payam-e Nour University, Tehran, 19395-4697, Iran 3. Department of Chemistry, Islamic Azad University, Shahr-e-Rey Branch, 18155-144, Tehran, Iran |
| Abstract: | We have developed a technique for the solid-phase extraction of gold using various kinds of pyridine-functionalized nanoporous silica prior to its determination in various samples using FAAS. The effects of solution pH, sample and eluent flow rate, sample volume and of potentially interfering ions are compared. The limits of detections vary from 28 to 53?pg?mL?1. The accuracy and precision are between 99.8% and 98.3?% and 0.7 to 1.6?% (RSD), respectively. The method was successfully applied to several standard reference materials. A technique has been developed for the solid-phase extraction of gold using various kinds of pyridine-functionalized nanoporous silica prior to its determination in various samples using FAAS. |
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