Citation: Hassan Ali Zamani. N¹,N²-Bis [1-(2-hydroxyphenyl)methylidene]ethanedihydrazide as a neutral ionophore for preparation of a new Ho³⁺ PVC-membrane sensor[J]. Chinese Chemical Letters, ;2011, 22(6): 701-704. doi: 10.1016/j.cclet.2010.10.056 shu

N¹,N²-Bis [1-(2-hydroxyphenyl)methylidene]ethanedihydrazide as a neutral ionophore for preparation of a new Ho³⁺ PVC-membrane sensor

Hassan Ali Zamani

Department of Applied Chemistry, Quchan branch, Islamic Azad University, Quchan, Iran

Received Date: 25 September 2010

N¹,N²-Bis [1-(2-hydroxyphenyl)methylidene]ethanedihydrazide(MEH)was used as new compound which plays the role of an excellent ion carrier in the fabrication of a Ho(Ⅲ)membrane electrode.The electrode shows a good selectivity for Ho(Ⅲ)ion with respect to most common cations including alkali, alkaline earth, transition and heavy metal ions.This electrode has a wide linear dynamic range from 1.0×10^-6 to 1.0×10^-2 mol/L with a Nernstian slope of 19.8±0.3 mV per decade and a low detection limit of 5.8×10^-7 mol/L in the pH range of 2.5-9.8, while the response time was rapid( < 10 s).The suggested sensor was applied to the determination of Ho(Ⅲ)ions in tap water and river water samples.
- Ion-selective electrode,
- Potentiometry,
- Sensor,
- PVC membrane
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