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Reference type: Journal
Authors: Ashkenani H, Taher MA
Article Title: Application of a new ion-imprinted polymer for solid-phase extraction of bismuth from various samples and its determination by ETAAS.
Publication date: 2013
Journal: International Journal of Environmental Analytical Chemistry
Volume: 93
Issue: (11)
Page numbers: 1132-1145.
DOI: 10.1080/03067319.2012.708746

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
Template and target information: bismuth ion, Bi(III)
Author keywords: bismuth determination, Ion-imprinted polymer, preconcentration, Electrothermal atomic absorption spectrometry, environmental and biological samples

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