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Preparation and characterization of modified ion selective electrodes for potentiometric determination of some metal ions / Nahed Areen Elzaher Shoukry ; Supervised Eman Yossri Frag , Sally E. Ashery

By: Contributor(s): Material type: TextTextLanguage: English Publication details: Cairo : Nahed Areen Elzaher Shoukry , 2020Description: 95 P. : charts , facimiles ; 25cmOther title:
  • تحضير وتوصيف اقطاب ايونيه انتقائيه معدله للتقدير الجهدى لبعض الأيونات الفلزية [Added title page title]
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  • Issued also as CD
Dissertation note: Thesis (M.Sc.) - Cairo University - Faculty of Science - Department of Analytical Chemistry Summary: Newly screen-printed electrode (SPE) based on Alizarin Red S (ARS) was suggested to determine silver (I) ion. Effect of ionophore content was studied which showed that 30.0 mg of ARS was the optimal composition. The reaction between Ag (I) ions and ARS ionophore at the electrode surface was studied through scanning electron microscopy (SEM) and energy dispersive X-ray analysis (EDX) and IR spectra measurement. The proposed sensor showed potentiometric response with monovalent Nernestian slope 59.69 mVdecade-1 over concentration range from 5.0 {u00D7}10⁻⁷ to1.0 {u00D7}10⁻² mol L-1 with lower detection limit 5.0 {u00D7} 10⁻⁷ mol L⁻¹ and can be used for 112 day without any significant drift in potential exhibited a fast response time (7 s). The proposed sensor exhibited constant potentiometric response in pH range 4.0-8.0 and also thermally stable until temperature 50 {u0366} C. It displays good selectivity toward silver (I) ions with regard to most common transition metal ions. The proposed sensor was applied for determination of silver (I) ion in x-ray photographic film and it can be used as indicator electrode in precipitation titrations. The method was validated according to IUPAC recommendation parameters
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Thesis Thesis قاعة الرسائل الجامعية - الدور الاول المكتبة المركزبة الجديدة - جامعة القاهرة Cai01.12.08.M.Sc.2020.Na.P (Browse shelf(Opens below)) Not for loan 01010110082812000
CD - Rom CD - Rom مخـــزن الرســائل الجـــامعية - البدروم المكتبة المركزبة الجديدة - جامعة القاهرة Cai01.12.08.M.Sc.2020.Na.P (Browse shelf(Opens below)) 82812.CD Not for loan 01020110082812000

Thesis (M.Sc.) - Cairo University - Faculty of Science - Department of Analytical Chemistry

Newly screen-printed electrode (SPE) based on Alizarin Red S (ARS) was suggested to determine silver (I) ion. Effect of ionophore content was studied which showed that 30.0 mg of ARS was the optimal composition. The reaction between Ag (I) ions and ARS ionophore at the electrode surface was studied through scanning electron microscopy (SEM) and energy dispersive X-ray analysis (EDX) and IR spectra measurement. The proposed sensor showed potentiometric response with monovalent Nernestian slope 59.69 mVdecade-1 over concentration range from 5.0 {u00D7}10⁻⁷ to1.0 {u00D7}10⁻² mol L-1 with lower detection limit 5.0 {u00D7} 10⁻⁷ mol L⁻¹ and can be used for 112 day without any significant drift in potential exhibited a fast response time (7 s). The proposed sensor exhibited constant potentiometric response in pH range 4.0-8.0 and also thermally stable until temperature 50 {u0366} C. It displays good selectivity toward silver (I) ions with regard to most common transition metal ions. The proposed sensor was applied for determination of silver (I) ion in x-ray photographic film and it can be used as indicator electrode in precipitation titrations. The method was validated according to IUPAC recommendation parameters

Issued also as CD

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