Application of a new ion-imprinted polymer for solid-phase extraction of bismuth from various samples and its determination by ETAAS |
| |
| Authors: | Hamid Ashkenani Mohammad Ali Taher |
| |
| Institution: | 1. Department of Chemistry , Shahid Bahonar University of Kerman , Kerman , Iran;2. Department of Chemistry , Minab Branch, Islamic Azad University , Minab , Iran;3. Young Researchers Society, Shahid Bahonar University of Kerman , Kerman , Iran hamid6730@gmail.com;5. Department of Chemistry , Shahid Bahonar University of Kerman , Kerman , Iran |
| |
| Abstract: | A batch process was developed to extract bismuth ions by a novel and selective sorbent. In this study, a new Bi(III)-ion imprinted polymer was prepared by formation of 2-(5-bromo-2-pyridylazo)-5-diethylaminophenol complex for selective preconcentration of ultra trace amounts of bismuth. Polymerization was performed with ethylene glycol dimethacrylate, as crosslinking monomer and methacrylic acid as functional monomer; in the presence of 2,2-azobisisobutyronitrile, as initiator, via bulk polymerization. Optimum pH for maximum sorption was 2.5–3.5. Maximum sorbent capacity and enrichment factor for bismuth were 35.9?mg?g?1 and 300, respectively. The relative standard deviation and limit of detection the method were evaluated as ±4.1% and 8.6?ng?L?1. This method is simple, selective and sensitive and can be applied to the determination of bismuth in water, biological and plant samples. |
| |
| Keywords: | bismuth determination ion-imprinted polymer preconcentration electrothermal atomic absorption spectrometry environmental and biological samples |
|
|
