3423

3238

كارشناسي ارشد

﴿ شيمي تجزيه ﴾

اصفهان، دانشگاه صنعتي اصفهان، دانشكده شيمي

1385

يازده، 79، [II] ص. : مصور، جدول، نمودار

ص. ع: به فارسي و انگليسي

تقي خياميان، علي اصغر انصافي

مرتضي طالبي، بهزاد رضايي

شيمي

ID3238

به فارسي و انگليسي: قابل رويت در نسخه ديجيتال

Abstract In this thesis nitrite and bromide ions were determined simultaneously based on thecatalytic effects of these anions on pyrogallal red reaction using principle componentanalysis and artificial neural networks In this work principle component analysis was usedfor dimension reduction of the data The values of mean relative error for bromide ion incalibration set was 8 10 and for nitrite ion 7 3 Therefore this work propose a methodfor determining bromide and nitrite ions in concentration range of 0 50 110 microgramper milliliter and 20 2000 nanogram per milliliter respectively In other part of this thesis piroxicam and pyridoxine were determined using spectrofluorimetry based on the parallelfactor analysis PARAFAC method In this way fluorescence emission spectrums wereobtained from 330 540 nm for excitation wavelengths from 280 320 nm Consequently one matrix was obtained for each sample and three dimensional matrix was obtained for allof the samples Mean relative errors for real samples were 3 33 for piroxicam and 6 50 for pyridoxine As a result this analysis method can be used to determine two mentionedcomponents in concentration range of 0 0025 10 0 microgram per milliliter and 0 001 0 50microgram per milliliter for piroxicam and pyridoxine respectively

تقي خياميان، علي اصغر انصافي

مرتضي طالبي، بهزاد رضايي