پديد آورنده :
اسدي، مسعود
عنوان :
امكان سنجي استفاده از منبع يونش سديم در طيف سنجي تحرك يوني
مقطع تحصيلي :
كارشناسي ارشد
گرايش تحصيلي :
شيمي فيزيك
محل تحصيل :
اصفهان: دانشگاه صنعتي اصفهان، دانشكده شيمي
صفحه شمار :
سيزده،63ص.: مصور،جدول،نمودار
يادداشت :
ص.ع.به فارسي و انگليسي
استاد راهنما :
محمود تبريزچي
استاد مشاور :
حسين فرخ پور
توصيفگر ها :
تخليه كرونا , تركيبات بين لايه سازي شده , كاتيون خواهي
تاريخ نمايه سازي :
31/1/93
استاد داور :
حسن قاضي عسگر، محمدمحسن مومني
چكيده انگليسي :
The Feasibility of Using Sodium Ionization Source in Ion Mobility Spectrometry Masoud Asadi Masoudasadi8968@yahoo com Nov 11 2013 Department of chemistry Isfahan University of Technology Isfahan 84156 83111 Iran Degree M Sc Language Farsi M Tabrizchi m tabriz@cc iut ac ir Abstract One of the most important components of an ion mobility spectrometer IMS is its ionization source The common ionization source in IMS is radioactive isotopes 63Ni Due to extra regulations the radioactive source has been replaced with different ionization sources A widely used alternative ionization source in IMS is corona discharge CD source Proton transfer reaction is the dominant mechanisms in the CD source which make that the best alternative for compounds with high proton affinities However in some cases such as analysis of the bulk samples very high sensitivity is not required and memory effect may limit the application of CD Another alternative source of ionization is sodium cation In this Work a stable source of sodium ion was developed using thermal ionization of Graphite Intercalation Compounds GIC The advantages and shortcomings of the new source in compare with the corona discharge method were evaluated Unlike in the CD source the reactant ion peak RIP for the sodium ion source was a single peak leaving more room for the product ion peak to be separately appeared In addition the RIP is narrower compared to that for CD Furthermore the RIP appears in shorter drift times Unlike in CD source spectra for selected alkaloids obtained with the sodium ion ionization source show simple pattern including a narrow single peak for each compound with no overlap which reveals an enhanced resolving power In all cases the product ion peak PIP in the sodium ionization source appeared in longer drift times leading to higher peak to peak resolution Finally the sodium ion source was less sensitive to the selected compounds This can in some cases be a privilege especially in repetitive bulk analysis where fast cleaning is required Keywords Ion Mobility Spectrometry Ionization Source Corona Discharge Thermal Ionization Sodium Ion SourcePDF created with pdfFactory Pro trial version www pdffactory com
استاد راهنما :
محمود تبريزچي
استاد مشاور :
حسين فرخ پور
استاد داور :
حسن قاضي عسگر، محمدمحسن مومني
