کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
747129 | 894500 | 2006 | 7 صفحه PDF | دانلود رایگان |
The suitability of a dioxime derivative, (2E, 3E)-2H-1,4-benzothiazine-2,3(4H)-dione dioxime as a neutral ionophore for the preparation of a PVC membrane electrode for Ni(II) ions was investigated. It can be used for at least 4 months without any considerable divergence in potentials and it has a relatively fast response of <10 s. The prepared membrane exhibits a near Nernstian response for Ni2+ ions over a wide concentration range (1.0 × 10−6 to 1.0 M) with a detection limit of 1.6 × 10−6 M. At a working pH range of 2.0–6.5 the proposed membrane electrode revealed very good selectivity for Ni2+ ions over a wide variety of other cations. It was applied successfully as an indicator electrode in potentiometric titration of nickel ions with EDTA, and in the determination of Ni2+ in some water samples.
Journal: Sensors and Actuators B: Chemical - Volume 119, Issue 1, 24 November 2006, Pages 167–173