Health & Environmental Research Online (HERO)


Print Feedback Export to File
2845469 
Journal Article 
The Novel SCN- Ion-selective Electrode Based on the 1-Benzyl-3-(4-nitrophenyl) thio-urea Ionophore 
Lee, K; Kang, DH; Choe, JuEun; Yun, M; You, JMin; Go, MinJ; Lee, J; Jeon, S 
2014 
Yes 
Bulletin of the Korean Chemical Society
ISSN: 0253-2964
EISSN: 1229-5949 
35 
11 
3175-3180 
WOS:000344583300006 
A potentiometric sensor based on the 1-benzyl-3-(4-nitrophenyl) thio-urea was synthesized and tested as an ionophore in PVC based membrane sensor towards SCN- ions. This membrane exhibits a linear stable response over a wide concentration range (1.0 x 10(-5) to 1.0 x 10(-2) M) with a slope of -59.2 mV/dec., a detection limit of log[SCN-] = -5.05, and a selectivity coefficient for thiocyanate against perchlorate anion of logK(SCN-j)(pot) = -0.133. The selectivity series of the membrane is as follows: SCN- > ClO4- > I- > NO3- > HSO3- > Cl- > HSO4- > F- > CH3COO- > HCO3- > Br- > H2PO4- > SO32- > SO42- > CO32-. The proposed electrode showed good selectivity and a good response for the SCN- ion over a wide variety of other anions in pH 6.0 buffer solutions and has a fast response time of about < 5s. The influences of the membrane by pH, ionophore, and plasticizer were studied. 
Ion selective electrodes; Polymeric membrane electrode; SCN- selective electrode; Thio-urea 
• LitSearch-NOx (2024)
     TIAB Screening
          Atmospheric
               Round 1
                    Exclude