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Paper
Title

Removal, preconcentration and determination of methyl red in water samples using silica coated magnetic nanoparticles

Year: 1393
COI: JR_ARWW-1-1_002
Language: EnglishView: 230
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Authors

Masoud Shariati-Rad - Department of Analytical Chemistry, Faculty of Chemistry, Razi University, Kermanshah ۶۷۱۴۹۶۷۳۴۶, Iran.
Mohsen Irandoust - Department of Analytical Chemistry, Faculty of Chemistry, Razi University, Kermanshah ۶۷۱۴۹۶۷۳۴۶, Iran.
Somayyeh Amri - Department of Analytical Chemistry, Faculty of Chemistry, Razi University, Kermanshah ۶۷۱۴۹۶۷۳۴۶, Iran.
Mostafa Feyzi

Abstract:

A method was developed for removal, preconcentration and spectrophotometric determination of trace amounts of methyl red based on SiO2-coated Fe3O4magnetic nanoparticles. The influence of pH, dosage of adsorbent and contact time on the adsorption of dye was explored by central composite design. The kinetic data were analyzed based on the Langmuir and Freundlich adsorption isotherms. The Langmuir model was fitted well to data and the maximum monolayer capacity q max of 49.50 mg g−1 was calculated. The results showed that desorption efficiencies of higher than 99% can be achieved in a short contact time of 3 min and in one step elution using 2.0 mL of 0.1 mol L−1 NaOH. The magnetic nanoparticles were washed with deionized water and reused for two successive removal processes with removal efficiencies more than 90%. Then desorbed dye was determined spectrophotometrically. The calibration curve was linear in the range of 0.025–0.250 mg L−1 of dye with a correlation coefficient of 0.9922. The relative standard deviations obtained upon application of the method to the real samples were lower than 0.7%. A preconcentration factor of the method was 50.

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This Paper COI Code is JR_ARWW-1-1_002. Also You can use the following address to link to this article. This link is permanent and is used as an article registration confirmation in the Civilica reference:

https://civilica.com/doc/926452/

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Shariati-Rad, Masoud and Irandoust, Mohsen and Amri, Somayyeh and Feyzi, Mostafa,1393,Removal, preconcentration and determination of methyl red in water samples using silica coated magnetic nanoparticles,https://civilica.com/doc/926452

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Type of center: دانشگاه دولتی
Paper count: 10,896
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