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Reference type: Journal
Authors: Rammika M, Darko G, Torto N
Article Title: Incorporation of Ni(II)-dimethylglyoxime ion-imprinted polymer into electrospun polysulphone nanofibre for the determination of Ni(II) ions from aqueous samples.
Publication date: 2011
Journal: Water SA
Volume: 37
Issue: (4)
Page numbers: 539-546.
Alternative URL: http://www.wrc.org.za/Lists/Knowledge%20Hub%20Items/Attachments/9201/2666%20abstract.pdf

Abstract: Ni(II)-dimethylglyoxime ion-imprinted polymer (Ni(II)-DMG IIP) was encapsulated in polysulphone and electrospun into nanofibres with diameters ranging from 406 to 854 nm. The structures of the Ni(II)-DMG encapsulated-IIP nanofibre, non-imprinted encapsulated-polymer nanofibre and polysulphone nanofibre mats were observed by scanning electron microscopy and evaluated by infrared spectroscopy. Electrospinning increased the specific surface area of the Ni(II)-DMG encapsulated-IIP nanofibre mats, as was evidenced by the low masses of the Ni(II)-DMG encapsulated-IIP nanofibre mats used. The accuracy of the method was validated by analysing a custom solution of certified reference material (SEP-3); the concentration of Ni(II) obtained was close to the certified one. The limit of detection was found to be 4.0 x 10-4 μg·ml-1 while the limit of quantification was found to be 1.2 x 10-3 μg·ml-1. The recovery of Ni(II) achieved using the Ni(II)-DMG imprinted nanofibre mats in water samples was found to range from 83 to 89%, while that of non-imprinted nanofibre mats was found to range from 59 to 65%, and that of polysulphone from 55 to 62%.
Template and target information: nickel ion, Ni(II)
Author keywords: electrospun encapsulated imprinted polymer nanofibres, aqueous samples, recovery


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