Study of the responses of the membranes based on FeS:Ag2S:PTFE particle sizes below 45 um : bachelor thesis

Provedeno je ispitivanje odziva ion-selektivnih membrana na željezove(II) ione u osnovnoj otopini potenciometrijskom metodom mjerenja razlike potencijala. Osnovni cilj je bilo testirati membranske elektrode i ispitati mogućnost njihovog daljnjeg korištenja u druge svrhe. Prvi dio eksperimenta je proveden u otopini pH vrijednosti 4,00, a drugi dio je proveden u otopini pH vrijednosti 4,75. Ispitivane membrane su prethodno napravljene u sastavu FeS:Ag 2 S:PTFE u omjeru 1:1:2, FeS:Ag 2 S:PTFE u omjeru 1:2:3, FeS:Ag 2 S:PTFE u omjeru 1:3:4, FeS: Ag 2 S: PTFE u omjeru 1:4.5 i FeS: Ag 2 S :PTFE u omjeru 1:5:6. Za pripremu navedenih membrana korištene su soli čestica manjih od 45 m. Ispitao se odziv ion-selektivne membrane na željezove(II) katione, a rezultati su se prikazali grafički. Pripremljene membrane pokazuju slab odziv na ispitivani ion.Study of the responses of ion-selective membranes to iron(II) ions in a stock solution for measuring potential differences has been demonstrated. The main objective was to test the membrane electrodes and to examine the possibilities for further use for other purposes. The first part of the experiment was performed at a pH of 4.00 and the second at pH of 4.75. Tested membranes were made as FeS: Ag 2 S : PTFE at 1: 1: 2, FeS: Ag 2 S : PTFE at 1: 2: 3, FeS: Ag 2 S : PTFE at 1: 3: 4, FeS: Ag 2 S : PTFE at 1:4:5 and FeS: Ag 2 S : PTFE moderate at 1: 5: 6. Salts with particles less than 45 µm were used to prepare these membranes. Ion-selective membrane was tested for iron(II) ions and the results were plotted The membrane membranes developed show a plate response to ion testing