Abstract
In this work, TiO 2 nano-particles were modified by pyridine group and characterized by scanning electron microscopy (SEM), X-Ray diffraction (XRD), FT-IR and elemental analysis (CHN). This sorbent was applied for pre-concentration of ultra-trace amount of palladium prior to its determination by flame atomic adsorption spectroscopy (FAAS). Through this study, different factors such as sample pH, sample flow rate, eluent parameters (type, concentration and volume), and elunet flow rate were optimized. Also effects of the selectivity of sorbent toward Pd(II) was investigated by palladium determination in presence of various interfering ions. The limit of detection was 3.8 ng mL1 and recovery was 99.1 % with a relative standard deviation of 2.5%. Finally the method was validated using standard reference material which their paladium concentrations are certified.
Highlights
Increasing demand for noble metals, platinum group metals (PGM), such as palladium(II), platinum(IV), ruthenium(III), rhodium(III) has been recently observed because of their wide range of industrial applications, e.g. as catalysts in organic processes, value added components in metal alloys and vehicle catalytic converter systems, in chemical, pharmaceutical, petroleum and electronic industries and in jewellery making.These applications of PGMs have increased the demand for these metals, whereas the natural resources are limited[1,2,3].Flame atomic absorption spectrometry (FAAS) is one of the most popular techniques for determination of metal ions because of its high specificity and low cost
This sorbent was applied for preconcentration of Pd(II) ions in aqueous samples after characterization by Fourier Transform Infrared (FT-IR), X-Ray diffraction (XRD) pattern, elemental analysis and scanning electron microscopy (SEM) micrograph
Sorbent Characterization Modification of TiO nano-particles have been performed according to previous report[14]
Summary
Increasing demand for noble metals, platinum group metals (PGM), such as palladium(II), platinum(IV), ruthenium(III), rhodium(III) has been recently observed because of their wide range of industrial applications, e.g. as catalysts in organic processes, value added components in metal alloys and vehicle catalytic converter systems, in chemical, pharmaceutical, petroleum and electronic industries and in jewellery making.These applications of PGMs have increased the demand for these metals, whereas the natural resources are limited[1,2,3].Flame atomic absorption spectrometry (FAAS) is one of the most popular techniques for determination of metal ions because of its high specificity and low cost. A novel sorbent based on functionalization of TiO2 nano-particles by pyridine This sorbent was applied for preconcentration of Pd(II) ions in aqueous samples after characterization by FT-IR, XRD pattern, elemental analysis and SEM micrograph.
Sign-in/Register to view highlights & summary 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.
