Nanopowder synthesis of novel Sn(II)-imprinted poly(dimethyl vinylphosphonate) by ultrasound-assisted technique: Adsorption and pre-concentration of Sn(II) from aqueous media and real samples

Amir Shafiee Kisomi; Afshin Rajabi Khorrami; Taher Alizadeh; Majid Farsadrooh; Hamedreza Javadian; Arash Asfaram; Shabnam Najafi AsliPashaki; Parisa Rafiei

doi:10.1016/j.ultsonch.2018.02.019

Nanopowder synthesis of novel Sn(II)-imprinted poly(dimethyl vinylphosphonate) by ultrasound-assisted technique: Adsorption and pre-concentration of Sn(II) from aqueous media and real samples

Ultrason Sonochem. 2018 Jun:44:129-136. doi: 10.1016/j.ultsonch.2018.02.019. Epub 2018 Feb 9.

Authors

Amir Shafiee Kisomi¹, Afshin Rajabi Khorrami², Taher Alizadeh¹, Majid Farsadrooh³, Hamedreza Javadian⁴, Arash Asfaram⁵, Shabnam Najafi AsliPashaki⁶, Parisa Rafiei¹

Affiliations

¹ Department of Analytical Chemistry, Faculty of Chemistry, University College of Science, University of Tehran, P.O. Box 14155-6455, Tehran, Iran.
² Department of Chemistry, Faculty of Sciences, Islamic Azad University, Karaj Branch, Karaj, Iran.
³ Department of Chemistry, University of Sistan and Baluchestan, P.O. Box 98135-674, Zahedan, Iran.
⁴ Universitat Politècnica de Catalunya, Department of Chemical Engineering, ETSEIB, Diagonal 647, 08028 Barcelona, Spain; Young Researchers and Elite Club, Arak Branch, Islamic Azad University, Arak, Iran. Electronic address: hamedreza.javadian@yahoo.com.
⁵ Medicinal Plants Research Center, Yasuj University of Medical Sciences, Yasuj, Iran.
⁶ Department of Chemistry, University of Mazandaran, Babolsar, Iran.

PMID: 29680594
DOI: 10.1016/j.ultsonch.2018.02.019

Abstract

In this research, a novel Sn(II)-imprinted poly(dimethyl vinylphosphonate) nanopowder (Sn(II)-IPDMVPN) was prepared using Sn²⁺, dimethyl vinylphosphonate, azobis isobutyronitril and ethylene glycol dimethacrylate as the template, ligand, initiator and cross linker, respectively. The non-imprinted poly(dimethyl vinylphosphonate) nanopowder (NIPDMVPN) was also synthesized utilizing the same procedure without using SnCl₂·2H₂O in order to compare the results with the Sn(II)-IPDMVPN. The structure, morphology and composition of the products were characterized by XRD, SEM, EDX, XRF, BET, FT-IR and NMR techniques. Some experimental conditions including pH, eluent concentration and sample volume were optimized to maximize Sn(II) adsorption by the Sn(II)-IPDMVPN. It was found that the optimum conditions are pH = 5, 1.00 M of HNO₃ as eluent and sample volume up to 50 mL. The results obtained by ICP-MS indicated that the Sn(II)-IPDMVPN had much higher adsorption capacity for Sn(II) ions (about threefold) than the NIPDMVPN. The applicability of the Sn(II)-IPDMVPN was also investigated in three different real samples. Under the best experimental conditions, the calibration graphs were linear in the range of 0.19-90 μg L^-1 with a coefficient of determination (R²) of 0.990. The detection limit was calculated to be 0.06 μg L^-1. The relative standard deviation (RSD) for six replicate measurements of Sn(II) at 1.00 ng mL^-1 was determined to be 1.8%. The results showed that the Sn(II)-IPDMVPN-ICP-MS is a very simple, rapid, sensitive and efficient method for the determination of Sn(II) ions in water samples.

Keywords: Adsorption; Poly(dimethyl vinylphosphonate); Pre-concentration; Sn(II); Sn(II)-imprinted polymer.