Abstract
A simple and rapid analytical method for the separation of tellurium from cadmium in aqueous solution by solid-phase extraction with nano-particles was developed. It was found that only Te(IV) could be quantitatively retained on nano–TiO2 in the pH range of 0.5–2.0, while Cd(II) was not adsorbed, but Cd(II) ions could be adsorbed quantitatively on nano-TiO2 within pH range of 4.0–9.0. The effects of acidity and concentration of elution solution on the recovery of the analytes were systematically investigated. The sorption data could be well interpreted by the Langmuir model. Based on the Langmuir model equation, the monolayer adsorption capacity of nano-TiO2 was calculated to be 32.75 mg · g−1 for Te(IV), and 6.34 mg · g−1 for Cd(II) (at 293 K). The removal percentages of Te(IV) and Cd(II) obtained from batch studies using nano-TiO2 particles were 98% and 97%, respectively. And the method was validated with column studies which showed a removal percentage of Te(IV) of 97%. The result provides a new approach for the separation and determination method of Te(IV) and Cd(II) from samples containing Cd and Te. The method was validated with certified reference material (GBW07508) and the content values obtained for Cd(II) and Te(IV) were in good agreement with the certified values.
Sign-in/Register to access full text options 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callDisclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
