Ethyl cellulose (EC) based electrospun nanofibers were exploited for sub-nanomolar level optical chemical sensing of ionic mercury. An azomethine ionophore was used as Hg (I) and Hg (II) sensing material. Ethyl cellulose nanofibers with varying amounts of the ionic liquid; 1-ethyl-3-methylimidazolium tetrafluoroborate (EMIMBF4) were prepared and characterized. The nanofibers were fabricated by electrospinning technique. The offered chemosensor allow determination of mercury ions in a large linear working range between 1.0 × 10and 1.0 × 10 mol L. Limit of detection was found to be 0.07 nM which makes this technique alternative to cold-vapor atomic absorption spectrometry (CV-AAS), flame emission methods and to inductively coupled plasma-mass spectrometry (ICP-MS).The electrospun nanofibers exhibited excellent sensitivity for Hg (II) with respect to the continuous thin films prepared with same composition. The observed high sensitivity can be attributed to the high surface area of the nanofibrous materials and enhanced diffusibility of the mercury ions to the ionophore.
Publication date:
Available online 29 May 2013
Source:Arabian Journal of Chemistry Author(s): Amir Ahmadi Ashtiani , Soheila Faraji , Sepideh Amjad Iranagh , Amir Hossein Faraji Ck45 steel was electroless coated with nickel–phosphorus alloy from a bath containing sodium hypophosph ... more
Publication date:
Available online 30 May 2013
Source:Arabian Journal of Chemistry Author(s): Ruihua Huang , Qian Liu , Jie Huo , Bingchao Yang The adsorption of methyl orange (MO) from aqueous solutions on protonated cross-linked chitosan was studied in a batch system. The result ... more
Publication date:
Available online 29 May 2013
Source:Arabian Journal of Chemistry Author(s): E.S. Abdel-Halim Cellulose was extracted from sugarcane bagasse by alkaline extraction with sodium hydroxide followed by delignification/bleaching using sodium chlorite/hexamethylenetetramin ... more
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