@article { author = {Shojaeia, Esmat and Masrournia, Mahboubeh and Beyramabadi, Ali and Behmadi, Hossein}, title = {Determination of Strontium Ion in Depilatory Powder, Toothpaste, and Raticide Samples using a Novel and Highly Sensitive Potentiometric Sensor Coupled with a Central Composite Design}, journal = {Analytical and Bioanalytical Electrochemistry}, volume = {12}, number = {3}, pages = {376-391}, year = {2020}, publisher = {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}, issn = {-}, eissn = {2008-4226}, doi = {}, abstract = {The strontium ion, in water-soluble forms, is one of the major pollutant in drinking water. Therefore, a simple, rapid, selective, and sensitive potentiometric carbon paste electrode was developed to measure strontium ion in real samples with complex matrices. To prepare the potentiometric sensor, a synthetic ligand ((E)-4-(((2-amino-4-chlorophenyl)imino)methyl)-5-(hydroxymethyl)-2-methyl pyridine-3-ol) as an efficient ionophore and an ionic liquid (1-Butyl-3-methylimidazolium hexafluorophosphate) as a suitable binder were dispersed in a mixture of graphite powder and graphene oxide. The composition of the sensor was optimized using a central composite design (full factorial) to reduce the number of experimental runs and investigate interactions between effective factors. The proposed sensor showed a Nernstian behavior in the linear concentration range of 1×10-8 to 1.0×10-1 M with a low detection limit (1.59×10−9 M) and suitable relative standard division (1.01 %). The proposed sensor can be well applied in the pH range of 3.00-9.50 for the analyte determination. Moreover, the proposed electrode as an indicator electrode was successfully used to measure the Sr(II) concentration in the depilatory powder, toothpaste, and raticide samples.}, keywords = {Strontium determination,Potentiometric sensor,Central composite design,Depilatory powder sample,Toothpaste sample,Raticide sample}, url = {https://www.abechem.com/article_38856.html}, eprint = {https://www.abechem.com/article_38856_353753160d5d975897de98453a948ac4.pdf} }