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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
Ultrasonics Sonochemistry ( IF 8.4 ) Pub Date : 2018-02-09 , DOI: 10.1016/j.ultsonch.2018.02.019
Amir Shafiee Kisomi , Afshin Rajabi Khorrami , Taher Alizadeh , Majid Farsadrooh , Hamedreza Javadian , Arash Asfaram , Shabnam Najafi AsliPashaki , Parisa Rafiei

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 three-fold) 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.



中文翻译:

超声辅助技术纳米合成新型Sn(II)印迹的聚(甲基乙烯基膦酸二甲酯):水介质和实际样品中Sn(II)的吸附和预富集

本研究以Sn 2+,乙烯基膦酸二甲酯,偶氮二异丁腈和乙二醇二甲基丙烯酸酯为模板,配体,引发剂和交叉链接器。还使用相同的步骤,无需使用SnCl 2 .2H 2,合成了非印迹聚(乙烯基乙烯基膦酸二甲酯)纳米粉末(NIPDMVPN)。O以便将结果与Sn(II)-IPDMVPN进行比较。通过XRD,SEM,EDX,XRF,BET,FT-IR和NMR技术对产物的结构,形态和组成进行了表征。优化了一些实验条件,包括pH,洗脱液浓度和样品量,以最大程度地提高Sn(II)-IPDMVPN对Sn(II)的吸附。发现最佳条件是pH = 5,1.00 M HNO 3作为洗脱液,样品体积最大为50 mL。ICP-MS获得的结果表明,Sn(II)-IPDMVPN对Sn(II)离子的吸附能力比NIPDMVPN高得多(约为三倍)。Sn(II)-IPDMVPN的适用性也在三个不同的真实样本中进行了研究。在最佳实验条件下,校准曲线在0.19–90μgL -1范围内呈线性测定系数(R 2)为0.990。计算出的检出限为0.06μgL -1。六次重复测量1.00 ng mL -1的Sn(II)的相对标准偏差(RSD)被确定为1.8%。结果表明,Sn(II)-IPDMVPN-ICP-MS是一种非常简单,快速,灵敏,高效的测定水中样品中Sn(II)离子的方法。

更新日期:2018-02-10
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