59862-11-2Relevant academic research and scientific papers
Novel selective thiocyanate PVC membrane electrode based on new Schiff base complex of 2.2-[(1,3-dimethyl-1,3-propanediylidene)dinitrilo]bis- benzenethiolato cadmium(II)
Ardakani, Mohammad Mazloum,Salavati-Niassari, Masoud,Sadeghi, Azam
, p. 595 - 599 (2004)
An ion selective electrode for thiocyanate based on a complex as ionophore is described. The influence of membrane composition, pH and interference anions were investigated. The sensor responds to thiocyanate in the linear range from 1 × 10-6-1 × 10-1 M with a slope -58.9 ± 0.5 mV decade-1. The limit of detection is 5 × 10-7 M SCN-. Selectivity coefficients determined with the fixed interference method (FIM) indicate a good discriminating ability towards SCN- ion in comparison to other anions. The proposed sensor has a fast response time of about 5-20 s and can be used for at least 2 months without any considerable divergence in potential. It was applied as indicator electrode in the titration of thiocyanate with Ag+ and in the potentiometric determination of thiocyanate in saliva and urine samples.
