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Pico Level Monitoring of Silver with Modified Hexagonal Mesoporous Compound (MCM-41) and Inductively Coupled Plasma Atomic Emission Spectrometry |
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| Authors: | Mohammad Reza Ganjali Azadeh Daftari Leila Hajiagha-Babaei Alireza Badiei Kamal Saberyan Ghodsi Mohammadi Ziarani Abolghasem Moghimi |
| Institution: | 1. Department of Chemistry, Tehran University, Tehran, Iran 4. Jabe Ibn Hayan Research Laboratories, Atomic Energy Organization of Iran, Tehran, Iran 2. Department of Chemistry, Alzahra University, Tehran, Iran 3. Department of Chemistry, Imam Hossein University, Tehran, Iran |
| Abstract: | A rapid method for the extraction and monitoring of picogram level of silver ions using uniform silanized mesopor (MCM-41) modified by a thiocompound and inductively coupled plasma atomic emission spectrometry (ICP-AES) is presented. The preconcentration factor of the method is 500, and detection limit of the technique for silver is 6.5 pg/ml. The time and the efficiency of the extraction, pH and flow rate, type and minimum amount of acid for stripping of silver from modified MCM-41 was tested. The break through volume of the method was found 2500 ml. The maximum capacity the modified MCM-41 was found to be 11.0 ± 1.2 μg of Ag+/mg modified MCM-41. |
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