| Abstract |
| Cesium is considered as the most abundant and hazardous radio toxic pollutant in liquid radioactive waste. The aim of the present investigation is to utilize the activated sericite in the attenuation of radio toxic cesium from aqueous solutions. Further, the material is assessed for its suitability in the modification of carbon paste electrode and employed as working electrode in cyclic voltammetry (CV) for the determination of trace level of radio toxic cesium in the aqueous media. Electrochemical behaviour of Cs(I) is obtained for a wide range of applied potential ±1.5 V against the standard Ag/AgCl reference electrode. The activated sericite carbon paste electrode (AS-CPE) showed a good tendency to Cs(I) ions and the presence of same amount of other metal ions could not hamper the detection of Cs(I). The presence of Na+ ions upto 5 mg/L could not significantly affect the determination of Cs(I), however the presence of excess Na+ ions in solution inhibit the detection of Cs(I) completely. Under the optimum conditions, a linear relationship is obtained between the scan rate and the cathodic peak current and moreover, fairly linear correlation was obtained in the concentration range of 10 ug/L to 50 ug/L with the correlation coefficients of 0.99 in the cathodic potential with the scan rate 200 mV/sec. |
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| Key Words |
| Sericite, Activated sericite, Cesium, Cyclic voltammetry, CV, Sensor |
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