_1624390238
1624390238
Hamid Shirkhanloo
sahar.zi67@gmail.com
Hamid Shirkhanloo
Analytical Methods in Environmental Chemistry Journal
AMECJournal
2645-5382
2645-5552
06
30
2021
4
02
10.24200/amecj.v4.i02
http://journal.amecj.com/index.php/AMECJ-01/issue/view/18
A rapid cadmium determination based on ion selective membrane potentiometric sensor by bis (salicylaldehydo)ethylenediimine as carrier
Mahdiyeh
Ghazizadeh
Hamideh
Asadollahzadeh
An ion selective potentiometric electrode (IPE) was prepared based on salen material (bis(salicylaldehydo)ethylenediimine) as a suitable carrier for determination of cadmium ions. An acceptable response for cadmium ions obtained over a linear range 8 × 10−7 to 1.0 × 10−2 M with a slope of 29.8 ± 0.8 mV per decade of activity and a detection limit of 3.2 × 10−7 M for Cd (II) ions in water and liquid samples. It has a response time less than 10 s and can be used for at least 2.5 months without any measurable divergence in potential. The ion selective electrode can be used based on potential and potential changes in the pH range 3.5 to 6.5, so, the cadmium determination was obtained at independent pH. Moreover, the selectivity of proposed method in presence of interference ions was studied. The results showed that the other cations do not interfere significantly in response electrode at optimized pH. This electrode was successfully used for the determination of cadmium ions in aqueous samples. The validation was obtained based on ICP analyzer and certified reference material in water samples (CRM, NIST).
06
27
2021
25
33
http://creativecommons.org/licenses/by/4.0
10.24200/amecj.v4.i02.136
http://journal.amecj.com/index.php/AMECJ-01/article/view/136
-
http://journal.amecj.com/index.php/AMECJ-01/article/download/136/318
-
http://journal.amecj.com/index.php/AMECJ-01/article/download/136/318