پديد آورنده :
عسكرپور، ندا
عنوان :
ساخت حسگرهاي پتانسيومتري غشايي بر پايه PVC جهت اندازه گيري يون هاي ساماريم و گادولينيم
مقطع تحصيلي :
كارشناسي ارشد
گرايش تحصيلي :
شيمي تجزيه
محل تحصيل :
اصفهان: دانشگاه صنعتي اصفهان، دانشكده شيمي
صفحه شمار :
سيزده، 89ص: مصور، جدول، نمودار
يادداشت :
ص.ع.به: فارسي و انگليسي
استاد راهنما :
بهزاد رضايي
استاد مشاور :
حسن حدادزاده
توصيفگر ها :
الكتروديون گزين
تاريخ نمايه سازي :
5/12/88
استاد داور :
تقي خياميان، محمد تقي جعفري
چكيده فارسي :
به فارسي و انگليسي: قابل رويت در نسخه ديجيتال
چكيده انگليسي :
90 Construction of PVC based potentiometric sensors for determination of samarium and gadolinium ions Neda Askarpoor n askarpoor@ch iut ac ir Date of Submission 2009 11 1 Department of Chemistry Isfahan University of Technology Isfahan 84156 83111 Iran Degree M Sc Language FarsiSupervisor Behzad Rezaei rezaei@cc iut ac irAdvisor Hasan Hadadzadeh hadad@cc iut ac irAbstract In regard to the important role of the samarium and gadolinium in industry and also their toxicity theseions have been studied in this thesis and two potentiometric membrane sensors have been made for them In the first part of this work initial studies exhibit that 1 3 di thiopheneimino benzoic acid DTBA complexes selectively with samarium ions Thus this ligand was used as an ionophore in construction of anion selective electrode based on PVC for samarium This electrode displays a linear response over theconcentration range of 5 0 10 6 to 1 0 10 1 M Sm III with a Nernstian slope of 19 6 mV per decade Theelectrode has a detection limit of 3 1 10 6 M and shows very fast response time 5 s The sensor is highlyselective for Sm III ions in the presence of many cations This sensor was successfully applied as a probe indetermination of samarium in binary mixtures and in indirect determination of hyoscine and hematropine intheir pharmaceutical formulation In the second part of this work a sensitive membrane electrode based on 4 methoxyphenylcyanamide 4 MeOpcyd for determination of gadolinium was prepared This electrode exhibits a linear response with aNernstian slope of 19 5 mV per decade within the concentration range 1 0 10 6 M to 1 0 10 2 M Gd III Detection limit of 6 2 10 7 M and response time lower than 10 s are the advantages of this electrode Theprepared electrode applied for determination of gadolinium as an indicator electrode in potentiometrictitration with EDTA and also for fluoride ions in mouthwash samples with satisfactory results Keywords Potentiometric membrane sensor Ion selective electrode Samarium Gadolinium
استاد راهنما :
بهزاد رضايي
استاد مشاور :
حسن حدادزاده
استاد داور :
تقي خياميان، محمد تقي جعفري
