%0 Journal Article %T Modified Praseodymium Sensor based on Nitrogen and Sulfur Doped Porous Graphite %J Analytical and Bioanalytical Electrochemistry %I Analytical and Bioanalytical Electrochemistry is an international scientific journal, which is published online every 3 months (since 2009), every 2 months (since 2011) and monthly (since 2018) by Center of Excellence in Electrochemistry, University of Tehran %Z - %A Rezapour, Morteza %A Rashidi, Alimorad %A Sadegh Hasani, Sedigheh %D 2022 %\ 05/31/2022 %V 14 %N 5 %P 523-534 %! Modified Praseodymium Sensor based on Nitrogen and Sulfur Doped Porous Graphite %R %X Incorporation of N and S containing porous graphite (NSPG) in the composition of carbon paste electrodes (CPEs) can improve their sensing behavior. Result of former studies have indicated the selective interaction of N, N-bis(a-methylsalicylidene) diethylenetriamine (BMT) and Pr3+ ions, as opposed to other lanthanide ions. In this light, BMT was incorporated into a mixed matrix of NSPG and graphite powder to obtain a modified Pr3+ potentiometric sensor. The results indicated that the nano-composite sensor offers enhanced sensitivity, selectivity; response time; response stability and lifetime in comparison to CPEs modified using multiwall carbon nanotube (MWCNT). The optimal response (i.e. a Nernstian response of 19.7±0.3 mV per decade from 1.0×10-7 to 1.0×10-2 mol L-1) was observed for a sensor containing 10% NSPG, 15% BMT, 30% IL and 45 % graphite powder. %U https://www.abechem.com/article_252520_ef8848b2711e9ffcd50887eb2df486fa.pdf